Delaware State Standards for Science: Grade 7

DE.1. Nature and Application of Science and Technology

1.1. Enduring Understanding: Scientific inquiry involves asking scientifically-oriented questions, collecting evidence, forming explanations, connecting explanations to scientific knowledge and theory, and communicating and justifying the explanation.

1.1.1. Frame and refine questions that can be investigated scientifically, and generate testable hypotheses. 36
Suggested Titles for Delaware Science State Standard 1.1.1.

1.1.2. Design and conduct investigations with controlled variables to test hypotheses. 6
Suggested Titles for Delaware Science State Standard 1.1.2.

1.1.3. Accurately collect data through the selection and use of tools and techniques appropriate to the investigation. Construct tables, diagrams and graphs, showing relationships between two variables, to display and facilitate analysis of data. Compare and question results with and from other students. 17
Suggested Titles for Delaware Science State Standard 1.1.3.

1.1.4. Form explanations based on accurate and logical analysis of evidence. Revise the explanation using alternative descriptions, predictions, models and knowledge from other sources as well as results of further investigation. 6
Suggested Titles for Delaware Science State Standard 1.1.4.

1.1.5. Communicate scientific procedures, data, and explanations to enable the replication of results. Use computer technology to assist in communicating these results. Critical review is important in the analysis of these results. 46
Suggested Titles for Delaware Science State Standard 1.1.5.

1.1.6. Use mathematics, reading, writing, and technology in conducting scientific inquiries. 17
Suggested Titles for Delaware Science State Standard 1.1.6.

1.1.7. Recognize that all matter consists of particles and how the particles are arranged determines the physical state. Use the particle model to describe solids, liquids, and gases in terms of the packing and motion of particles. 3
Suggested Titles for Delaware Science State Standard 1.1.7.

1.1.8. Measure and record the temperature of ice water as it is heated. Plot the graph of measurements taken and interpret the change of phase graph using the particle model, identifying the states of matter. 17
Suggested Titles for Delaware Science State Standard 1.1.8.

1.1.9. Analyze a standard change of phase graph of water. Using the particle model, identify where water is a solid, liquid or gas, is freezing/melting or evaporating/condensing. Relate the states of matter to the changes (increase, decrease) of energy in the system. 48
Suggested Titles for Delaware Science State Standard 1.1.9.

1.1.10. Make a model or drawing of particles of the same material in solid, liquid, and gas state. Describe the arrangement, spacing and energy in each state. 48
Suggested Titles for Delaware Science State Standard 1.1.10.

1.1.11. Calculate the density of various solid materials. Use density to predict whether an object will sink or float in water. Given the density of various solids and liquids, create a density column and explain the arrangement in terms of density. 3
Suggested Titles for Delaware Science State Standard 1.1.11.

1.1.12. Use physical properties to distinguish and separate one substance or material from another. 3
Suggested Titles for Delaware Science State Standard 1.1.12.

1.1.13. Distinguish between homogeneous and heterogeneous mixtures. Using their physical properties, design and conduct an investigation to separate the components of a homogeneous or heterogeneous mixture. Recognize that a homogeneous mixture is a solution. 50
Suggested Titles for Delaware Science State Standard 1.1.13.

1.1.14. Prepare solutions of different concentrations recognizing that the properties of the solution (color, density, boiling point) depend on the nature and concentration of the solute and solvent. 50
Suggested Titles for Delaware Science State Standard 1.1.14.

1.1.15. Conduct investigations to determine the effect of temperature and surface area of the solute on the rate of solubility. Describe the rate of solubility using the particle model. 54
Suggested Titles for Delaware Science State Standard 1.1.15.

1.1.16. Conduct investigations to determine the effect of temperature on saturation point. Construct a solubility curve based on data collected. Describe solubility and saturation point using the particle model. 56
Suggested Titles for Delaware Science State Standard 1.1.16.

1.1.17. Conduct investigations to demonstrate the process of diffusion. Use the particle model to describe the movement of materials from an area of higher concentration to an area of lower concentration. 56
Suggested Titles for Delaware Science State Standard 1.1.17.

1.1.18. Show that mass is conserved when adding a solute to a solvent (mass of solvent + mass of solute = total mass of solution). 50
Suggested Titles for Delaware Science State Standard 1.1.18.

1.1.19. Describe how heat energy when added to a substance, will increase its temperature or change its state. Explain that as more heat energy is added to a substance, the particles' vibrations increase and the spacing between the particles increases, but the size of the particles stays the same. 80
Suggested Titles for Delaware Science State Standard 1.1.19.

1.1.20. Create models that simulate the amount of salt, frozen, fresh, and potable water available on Earth's surface. Compare total water supply on Earth to the amount of potable water available for human use. 23
Suggested Titles for Delaware Science State Standard 1.1.20.

1.1.21. Calculate the ratio/percent of water generally found in solid, liquid and gaseous form on or within the Earth's surface and use this ratio to compare the amounts of water stored in different states. 27
Suggested Titles for Delaware Science State Standard 1.1.21.

1.1.22. Use diagrams of the hydrologic cycle to show and describe the circulation of water through the Earth's crust, oceans, and atmosphere. 27
Suggested Titles for Delaware Science State Standard 1.1.22.

1.1.23. Use the particle model to describe solids, liquids, and gases in terms of the packing, motion of particles, and energy gain or loss. Apply this to the processes of evaporation, condensation, and precipitation in the water cycle. Explain how heat energy drives the water cycle. 7
Suggested Titles for Delaware Science State Standard 1.1.23.

1.1.24. Use models or diagrams to explain how water stored underground (groundwater and aquifers) and water stored above ground (lakes, rivers, air, etc...) interact to form a continuous cycle. 27
Suggested Titles for Delaware Science State Standard 1.1.24.

1.1.25. Investigate, through the use of models, how water acts as a solvent and as it passes through the water cycle it dissolves minerals, gases, and pollutants and carries them to surface water and ground water supplies. 27
Suggested Titles for Delaware Science State Standard 1.1.25.

1.1.26. Conduct investigations and use the data to describe the extent to which the permeability and porosity of a soil sample affect the rate of water percolation. 32
Suggested Titles for Delaware Science State Standard 1.1.26.

1.1.27. Use topographic maps to locate Delaware watersheds and to identify the bodies of water into which they drain. Analyze and describe the relationship between elevation of land and the flow rate of water in a watershed. 30
Suggested Titles for Delaware Science State Standard 1.1.27.

1.1.28. Conduct tests including temperature, pH, salinity, dissolved oxygen, turbidity, nitrate, and phosphate to determine the potability of local water samples. 34
Suggested Titles for Delaware Science State Standard 1.1.28.

1.1.29. Identify macro-invertebrates in a local stream and apply this identification in determining the stream's ecological health. 26
Suggested Titles for Delaware Science State Standard 1.1.29.

1.1.30. Identify and apply criteria for determining whether specimens or samples are living, dead, dormant or nonliving. 12
Suggested Titles for Delaware Science State Standard 1.1.30.

1.1.31. Classify organisms based on shared characteristics into currently recognized kingdoms and justify their placement. Give examples of organisms from each kingdom. 10
Suggested Titles for Delaware Science State Standard 1.1.31.

1.1.32. Observe and sketch cells using microscopes and other appropriate tools. Compare and contrast plant, animal, protist, and bacterial cells by noting the presence or absence of major organelles (i.e., cell membrane, cell wall, nucleus, chloroplasts, mitochondria and vacuoles) using the sketches and other resources. Research external conditions needed by a variety of organisms for survival such as temperature, turbidity, pH, salinity, and amount of dissolved oxygen, phosphates, and nitrates. Predict how organisms may respond to changes in these external conditions based on research findings. 27
Suggested Titles for Delaware Science State Standard 1.1.32.

1.1.33. Recognize that reproduction is a process that occurs in all living systems and is essential to the continuation of the species. Use models or diagrams to identify the structures of a flowering plant that produce eggs and sperm and explain that plants as well as animals can reproduce sexually. 1
Suggested Titles for Delaware Science State Standard 1.1.33.

1.1.34. Given varied scenarios (including one or two parent reproduction, and having traits identical to or different than the parents), classify offspring as either sexually or asexually produced and justify your response. 41
Suggested Titles for Delaware Science State Standard 1.1.34.

1.1.35. Compare and contrast asexual and sexual reproduction in terms of potential variation and adaptation to a static or changing environment. Relate advantages and/or disadvantages of each strategy. 42
Suggested Titles for Delaware Science State Standard 1.1.35.

1.1.36. Make a simple labeled drawing of human reproductive cells. Indicate that the sex cells (sperm and egg) each have half of the chromosomal number (23) as a fertilized egg (46). The fertilized egg has the same number of chromosomes as each of the body cells of the new organism. Recognize that different organisms may have different numbers of chromosomes and that the number of chromosomes does not relate to the complexity of the organism. 53
Suggested Titles for Delaware Science State Standard 1.1.36.

1.1.37. Make a simple labeled drawing of asexual reproduction as it occurs in sexually produced organisms at the cellular level. Indicate that resulting cells contain an identical copy of genetic information from the parent cell. 53
Suggested Titles for Delaware Science State Standard 1.1.37.

1.1.38. Describe the relationship between genes, chromosomes, and DNA in terms of location and relative size. 40
Suggested Titles for Delaware Science State Standard 1.1.38.

1.1.39. Use single trait Punnett squares to examine the genotypes of individuals and indicate which individuals will express dominant or recessive traits. Justify the indication by relating that dominant alleles appearing heterozygously or homozygously are expressed or that two recessive alleles (homozygous) are required for an offspring to express a recessive trait phenotypically. 40
Suggested Titles for Delaware Science State Standard 1.1.39.

1.1.40. Use pedigrees to illustrate the heritability of dominant and recessive alleles over several generations. 40
Suggested Titles for Delaware Science State Standard 1.1.40.

1.1.41. Research and report on the contributions of Gregor Mendel and other genetic researchers and how their contributions altered the body of scientific knowledge. 3
Suggested Titles for Delaware Science State Standard 1.1.41.

1.1.42. Identify 'kingdom' as the first main level of the standard classification system. Observe a variety of living organisms and determine into which kingdom they would be classified. 10
Suggested Titles for Delaware Science State Standard 1.1.42.

1.2. Enduring Understanding: The development of technology and advancement in science influence and drive each other forward.

1.2.1. Select a manufactured item and identify its component materials. Explain how the physical properties of the materials contribute to the function of the item. 9
Suggested Titles for Delaware Science State Standard 1.2.1.

1.2.2. Discuss the social, economic, and/or environmental consequences of the production of new materials to meet human wants and needs. 82
Suggested Titles for Delaware Science State Standard 1.2.2.

1.2.3. Research and report on the processes used by municipalities to ensure water taken from local reservoirs is safe to return to the environment. 2
Suggested Titles for Delaware Science State Standard 1.2.3.

1.2.4. Investigate and report on legislation such as the Clean Water Act and its impact on the quality of Delaware water. 33
Suggested Titles for Delaware Science State Standard 1.2.4.

1.2.5. List ways in which human intervention can help maintain an adequate supply of fresh water for human consumption. Apply knowledge and skills learned about water as a resource to study local sources of drinking water and devise a water quality stewardship plan. 81
Suggested Titles for Delaware Science State Standard 1.2.5.

1.2.6. Use various indicators (pH, turbidity, nitrates, phosphates, salinity, and macro-invertebrate surveys) to establish the health and potential potability of local bodies of water. 27
Suggested Titles for Delaware Science State Standard 1.2.6.

1.2.7. Research and report on selective breeding. Select an organism (e.g., race horses, pedigree dogs, drought resistant plants) and trace its history of development and the traits of the plant or animal that were enhanced by selective breeding. 23
Suggested Titles for Delaware Science State Standard 1.2.7.

1.2.8. Recognize that the health profession uses pedigree charts to trace genetic disorders in past generations make predictions for future generations. Research and report on a chromosomal disorder. Complete a simulated pedigree for a fictional family based on your research. 40
Suggested Titles for Delaware Science State Standard 1.2.8.

1.2.9. Explain how sanitation measures such as sewers, landfills, and water treatment are important in controlling the spread of organisms that contaminate water and cause disease. 138
Suggested Titles for Delaware Science State Standard 1.2.9.

1.3. Enduring Understanding: Understanding past processes and contributions is essential in building scientific knowledge.

1.3.1. Research the sequence of events that led to the formation of the cell theory and correlate these events with technological advancements (e.g., hand lens, microscopes, and staining techniques). 34
Suggested Titles for Delaware Science State Standard 1.3.1.

DE.2. Materials and Their Properties

2.1. Enduring Understanding: The structures of materials determine their properties.

2.1.1. Recognize that all matter consists of particles and how the particles are arranged determines the physical state. Use the particle model to describe solids, liquids, and gases in terms of the packing and motion of particles. 50
Suggested Titles for Delaware Science State Standard 2.1.1.

2.1.2. Measure and record the temperature of ice water as it is heated. Plot the graph of measurements taken and interpret the change of phase graph using the particle model, identifying the states of matter. 61
Suggested Titles for Delaware Science State Standard 2.1.2.

2.1.3. Analyze a standard change of phase graph of water. Using the particle model, identify where water is a solid, liquid or gas, is freezing/melting or evaporating/condensing. Relate the states of matter to the changes (increase, decrease) of energy in the system. 48
Suggested Titles for Delaware Science State Standard 2.1.3.

2.1.4. Make a model or drawing of particles of the same material in solid, liquid, and gas state. Describe the arrangement, spacing and energy in each state. 14
Suggested Titles for Delaware Science State Standard 2.1.4.

2.1.5. Distinguish between physical properties that are dependent upon mass (size, shape) and those physical properties such as boiling point, melting point, solubility, density, conduction of heat and pH of a substance or material that are not altered when the mass of the material is changed. 50
Suggested Titles for Delaware Science State Standard 2.1.5.

2.1.6. Calculate the density of various solid materials. Use density to predict whether an object will sink or float in water. Given the density of various solids and liquids, create a density column and explain the arrangement in terms of density. 50
Suggested Titles for Delaware Science State Standard 2.1.6.

2.1.7. Use physical properties to distinguish and separate one substance or material from another. 50
Suggested Titles for Delaware Science State Standard 2.1.7.

2.2. Enduring Understanding: The properties of the mixture are based on the properties of its components.

2.2.1. Distinguish between homogeneous and heterogeneous mixtures. Using their physical properties, design and conduct an investigation to separate the components of a homogeneous or heterogeneous mixture. Recognize that a homogeneous mixture is a solution. 50
Suggested Titles for Delaware Science State Standard 2.2.1.

2.2.2. Prepare solutions of different concentrations recognizing that the properties of the solution (color, density, boiling point) depend on the nature and concentration of the solute and solvent. 50
Suggested Titles for Delaware Science State Standard 2.2.2.

2.2.3. Conduct investigations to determine the effect of temperature and surface area of the solute on the rate of solubility. Describe the rate of solubility using the particle model. 54
Suggested Titles for Delaware Science State Standard 2.2.3.

2.2.4. Conduct investigations to determine the effect of temperature on saturation point. 54
Suggested Titles for Delaware Science State Standard 2.2.4.

2.2.5. Construct a solubility curve based on data collected. Describe solubility and saturation point using the particle model. 65
Suggested Titles for Delaware Science State Standard 2.2.5.

2.2.6. Conduct investigations to demonstrate the process of diffusion. Use the particle model to describe the movement of materials from an area of higher concentration to an area of lower concentration. 4
Suggested Titles for Delaware Science State Standard 2.2.6.

2.3. Enduring Understanding: When materials interact within a closed system, the total mass of the system remains the same.

2.3.1. Show that mass is conserved when adding a solute to a solvent (mass of solvent + mass of solute = total mass of solution). 50
Suggested Titles for Delaware Science State Standard 2.3.1.

2.4. Enduring Understanding: People develop new materials as a response to the needs of society and the pursuit of knowledge. This development may have risks and benefits to humans and the environment.

2.4.1. Select a manufactured item and identify its component materials. Explain how the physical properties of the materials contribute to the function of the item. 9
Suggested Titles for Delaware Science State Standard 2.4.1.

2.4.2. Discuss the social, economic, and/or environmental consequences of the production of new materials to meet human wants and needs. 82
Suggested Titles for Delaware Science State Standard 2.4.2.

DE.3. Energy and Its Effects

3.1. Enduring Understandings: Energy takes many forms. These forms can be grouped into types of energy that are associated with the motion of mass (kinetic energy) and types of energy associated with the position of mass and energy fields (potential energy).

3.1.1. Describe how heat energy when added to a substance, will increase its temperature or change its state. Explain that as more heat energy is added to a substance, the particles' vibrations increase and the spacing between the particles increases, but the size of the particles stays the same. 5
Suggested Titles for Delaware Science State Standard 3.1.1.

3.2. Enduring Understandings: Changes take place because of the transfer of energy. Energy is transferred to matter through the action of forces. Different forces are responsible for the different forms of energy.

3.3. Enduring Understandings: Energy readily transforms from one form to another, but these transformations are not always reversible. The details of these transformations depend upon the initial form of the energy and the properties of the materials involved. Energy may transfer into or out of a system and it may change forms, but the total energy cannot change.

3.4. Enduring Understandings: People utilize a variety of resources to meet the basic and specific needs of life. Some of these resources cannot be replaced. Other resources can be replenished or exist in such vast quantities they are in no danger of becoming depleted. Often the energy stored in resources must be transformed into more useful forms and transported over great distances before it can be helpful to us.

DE.4. Earth in Space

4.1. Enduring Understanding: Observable, predictable patterns of movement in the Sun, Earth, Moon system occur because of gravitational interaction and energy from the Sun.

4.2. Enduring Understanding: All objects in the Solar System orbit the Sun and have distinctive physical characteristics and orderly motion.

4.3. Enduring Understanding: Technology expands our knowledge of the Solar System.

DE.5. Earth's Dynamic Systems

5.1. Enduring Understandings: Earth's systems can be broken down into individual components which have observable measurable properties.

5.1.1. Create models that simulate the amount of salt, frozen, fresh, and potable water available on Earth's surface. Compare total water supply on Earth to the amount of potable water available for human use. 27
Suggested Titles for Delaware Science State Standard 5.1.1.

5.1.2. Calculate the ratio/percent of water generally found in solid, liquid and gaseous form on or within the Earth's surface and use this ratio to compare the amounts of water stored in different states. 30
Suggested Titles for Delaware Science State Standard 5.1.2.

5.2. Enduring Understanding: Earth's components form systems. These systems continually interact at different rates of time, affecting the Earth locally and globally.

5.2.1. Use diagrams of the hydrologic cycle to show and describe the circulation of water through the Earth's crust, oceans, and atmosphere. 27
Suggested Titles for Delaware Science State Standard 5.2.1.

5.2.2. Use the particle model to describe solids, liquids, and gases in terms of the packing, motion of particles, and energy gain or loss. Apply this to the processes of evaporation, condensation, and precipitation in the water cycle. Explain how heat energy drives the water cycle. 61
Suggested Titles for Delaware Science State Standard 5.2.2.

5.2.3. Use models or diagrams to explain how water stored underground (groundwater and aquifers) and water stored above ground (lakes, rivers, air, etc.) interact to form a continuous cycle. 27
Suggested Titles for Delaware Science State Standard 5.2.3.

5.2.4. Investigate, through the use of models, how water acts as a solvent and as it passes through the water cycle it dissolves minerals, gases, and pollutants and carries them to surface water and ground water supplies. 51
Suggested Titles for Delaware Science State Standard 5.2.4.

5.2.5. Conduct investigations and use the data to describe the extent to which the permeability and porosity of a soil sample affect the rate of water percolation. 34
Suggested Titles for Delaware Science State Standard 5.2.5.

5.2.6. Describe the role of wetlands and streamside forests (riparian) in filtering water as it runs off into local streams, rivers, and bays or seeps into ground water. 37
Suggested Titles for Delaware Science State Standard 5.2.6.

5.3. Enduring Understanding: Technology enables us to better understand Earth's systems. It also allows us to analyze the impact of human activities on Earth's systems and the impact of Earth's systems on human activity.

5.3.1. Use topographic maps to locate Delaware watersheds and to identify the bodies of water into which they drain. Analyze and describe the relationship between elevation of land and the flow rate of water in a watershed. 30
Suggested Titles for Delaware Science State Standard 5.3.1.

5.3.2. Conduct tests including temperature, pH, salinity, dissolved oxygen, turbidity, nitrate, and phosphate to determine the potability of local water samples. 29
Suggested Titles for Delaware Science State Standard 5.3.2.

5.3.3. Identify macro-invertebrates in a local stream and apply this identification in determining the stream's ecological health. 26
Suggested Titles for Delaware Science State Standard 5.3.3.

5.3.4. Explain the impact of human activities (e.g., building roads, fertilizing golf courses, etc.) on the quality of Delaware's waters. 5
Suggested Titles for Delaware Science State Standard 5.3.4.

5.3.5. Research and report on the processes used by municipalities to ensure water taken from local reservoirs is safe to return to the environment. 49
Suggested Titles for Delaware Science State Standard 5.3.5.

5.3.6. Investigate and report on legislation such as the Clean Water Act and its impact on the quality of Delaware water. 33
Suggested Titles for Delaware Science State Standard 5.3.6.

5.3.7. List ways in which human intervention can help maintain an adequate supply of fresh water for human consumption. Apply knowledge and skills learned about water as a resource to study local sources of drinking water and devise a water quality stewardship plan. 29
Suggested Titles for Delaware Science State Standard 5.3.7.

DE.6. Life Processes

6.1. Enduring Understanding: Living systems, from the organismic to the cellular level, demonstrate the complementary nature of structure and function.

6.1.1. Identify and apply criteria for determining whether specimens or samples are living, dead, dormant or nonliving. 2
Suggested Titles for Delaware Science State Standard 6.1.1.

6.1.2. Classify organisms based on shared characteristics into currently recognized kingdoms and justify their placement. Give examples of organisms from each kingdom. 10
Suggested Titles for Delaware Science State Standard 6.1.2.

6.1.3. Explain that individual cells are able to carry out basic life functions that are similar in organisms; however, explain that in multi-cellular organisms, cells become specialized, interdependent upon one another, and unable to survive independently. 34
Suggested Titles for Delaware Science State Standard 6.1.3.

6.1.4. Describe the hierarchical organization of multi-cellular organisms. Recognize that multi-celled organisms are organized as specialized cells within tissues that make up organs within organ systems, which work together to carry out life processes for the entire organism. 57
Suggested Titles for Delaware Science State Standard 6.1.4.

6.1.5. Observe and sketch cells using microscopes and other appropriate tools. Compare and contrast plant, animal, protist, and bacterial cells by noting the presence or absence of major organelles (i.e., cell membrane, cell wall, nucleus, chloroplasts, mitochondria and vacuoles) using the sketches and other resources. 27
Suggested Titles for Delaware Science State Standard 6.1.5.

6.1.6. Research the sequence of events that led to the formation of the cell theory and correlate these events with technological advancements (e.g., hand lens, microscopes, and staining techniques). 34
Suggested Titles for Delaware Science State Standard 6.1.6.

6.2. Enduring Understanding: All organisms transfer matter and convert energy from one form to another. Both matter and energy are necessary to build and maintain structures within the organism.

6.2.1. Recognize that the process of photosynthesis occurs in the chloroplasts of producers. Summarize the basic process in which energy from sunlight is used to make sugars from carbon dioxide and water (photosynthesis). Indicate that this food can be used immediately, stored for later use, or used by other organisms. 12
Suggested Titles for Delaware Science State Standard 6.2.1.

6.2.2. Recognize that the process of cellular respiration in the mitochondria of both plants and animals releases energy from food. Indicate that this food provides the energy and materials for repair and growth of cells. Explain the complementary nature between photosynthesis and cellular respiration. 25
Suggested Titles for Delaware Science State Standard 6.2.2.

6.3. Enduring Understanding: Organisms respond to internal and external cues, which allow them to survive.

6.3.1. Research external conditions needed by a variety of organisms for survival such as temperature, turbidity, pH, salinity, and amount of dissolved oxygen, phosphates, and nitrates. Predict how organisms may respond to changes in these external conditions based on research findings. 6
Suggested Titles for Delaware Science State Standard 6.3.1.

6.4. Enduring Understanding: The life processes of organisms are affected by their interactions with each other and their environment, and may be altered by human manipulation.

6.4.1. Use various indicators (pH, turbidity, nitrates, phosphates, salinity, and macro-invertebrate surveys) to establish the health and potential potability of local bodies of water. 30
Suggested Titles for Delaware Science State Standard 6.4.1.

DE.7. Diversity and Continuity of Living Things

7.1. Enduring Understanding: Organisms reproduce, develop, have predictable life cycles, and pass on heritable traits to their offspring.

7.1.1. Recognize that reproduction is a process that occurs in all living systems and is essential to the continuation of the species. Use models or diagrams to identify the structures of a flowering plant that produce eggs and sperm and explain that plants, as well as, animals can reproduce sexually. 1
Suggested Titles for Delaware Science State Standard 7.1.1.

7.1.2. Given varied scenarios (including one or two parent reproduction, and having traits identical to or different than the parents), classify offspring as either sexually or asexually produced and justify your response. 41
Suggested Titles for Delaware Science State Standard 7.1.2.

7.1.3. Compare and contrast asexual and sexual reproduction in terms of potential variation and adaptation to a static or changing environment. Relate advantages and/or disadvantages of each strategy. 42
Suggested Titles for Delaware Science State Standard 7.1.3.

7.1.4. Make a simple labeled drawing of human reproductive cells. Indicate that the sex cells (sperm and egg) each have half of the chromosomal number (23) as a fertilized egg (46). The fertilized egg has the same number of chromosomes as each of the body cells of the new organism. Recognize that different organisms may have different numbers of chromosomes and that the number of chromosomes does not relate to the complexity of the organism. 53
Suggested Titles for Delaware Science State Standard 7.1.4.

7.1.5. Make a simple labeled drawing of asexual reproduction as it occurs in sexually produced organisms at the cellular level. Indicate that resulting cells contain an identical copy of genetic information from the parent cell. 65
Suggested Titles for Delaware Science State Standard 7.1.5.

7.1.6. Describe the relationship between genes, chromosomes, and DNA in terms of location and relative size. 40
Suggested Titles for Delaware Science State Standard 7.1.6.

7.1.7. Explain how the sex chromosomes inherited from each parent determines the gender of the offspring. 40
Suggested Titles for Delaware Science State Standard 7.1.7.

7.1.8. Model a random process (e.g., coin toss) that illustrates which alleles can be passed from parent to offspring. 40
Suggested Titles for Delaware Science State Standard 7.1.8.

7.1.9. Use single trait Punnett squares to examine the genotypes of individuals and indicate which individuals will express dominant or recessive traits. Justify the indication by relating that dominant alleles appearing heterozygously or homozygously are expressed or that two recessive alleles (homozygous) are required for an offspring to express a recessive trait phenotypically. 40
Suggested Titles for Delaware Science State Standard 7.1.9.

7.1.10. Use pedigrees to illustrate the heritability of dominant and recessive alleles over several generations. 40
Suggested Titles for Delaware Science State Standard 7.1.10.

7.1.11. Research and report on the contributions of Gregor Mendel and other genetic researchers and how their contributions altered the body of scientific knowledge. 41
Suggested Titles for Delaware Science State Standard 7.1.11.

7.2. Enduring Understanding: The diversity and changing of life forms over many generations is the result of natural selection, in which organisms with adaptive traits survive, reproduce, and pass those traits to offspring.

7.2.1. Explain through the use of models or diagrams, why sexually-produced offspring are not identical to their parents. 42
Suggested Titles for Delaware Science State Standard 7.2.1.

7.2.2. Identify 'kingdom' as the first main level of the standard classification system. Observe a variety of living organisms and determine into which kingdom they would be classified. 13
Suggested Titles for Delaware Science State Standard 7.2.2.

7.3. Enduring Understanding: The development of technology has allowed us to apply our knowledge of genetics, reproduction, development and evolution to meet human wants and needs.

7.3.1. Research and report on selective breeding. Select an organism (e.g., race horses, pedigree dogs, drought resistant plants) and trace its history of development and the traits of the plant or animal that were enhanced by selective breeding. Recognize that the health profession uses pedigree charts to trace genetic disorders in past generations make predictions for future generations. 65
Suggested Titles for Delaware Science State Standard 7.3.1.

7.3.2. Research and report on a chromosomal disorder. Complete a simulated pedigree for a fictional family based on your research. 157
Suggested Titles for Delaware Science State Standard 7.3.2.

DE.8. Ecology

8.1. Enduring Understandings: Organisms and their environments are interconnected. Changes in one part of the system will affect other parts of the system.

8.2. Enduring Understandings: Matter needed to sustain life is continually recycled among and between organisms and the environment. Energy from the sun flows irreversibly through ecosystems and is conserved as organisms use and transform it.

8.3. Enduring Understanding: Humans can alter the living and non-living factors within an ecosystem, thereby creating changes to the overall system.

8.3.1. Explain how sanitation measures such as sewers, landfills, and water treatment are important in controlling the spread of organisms that contaminate water and cause disease. 138
Suggested Titles for Delaware Science State Standard 8.3.1.