Tennessee Grade 7 science standards

7.LS1.6 Develop and use a model (e.g., Punnett squares, diagrams, and simulations) as evidence to demonstrate why asexual reproduction results in offspring with identical genetic information and sexual reproduction results in offspring with genetic variation.

Lessons: Genes and Traits: Heredity and Punnett Squares (Why do you look like your family, but not exactly?, How can two purple-flowered pea plants have a white-flowered one?, What did Mendel count?)

Practice: Genes and Traits: Heredity and Punnett Squares workbook

7.LS1.7 Develop a model using evidence that explains the process of photosynthesis, cellular respiration, and anaerobic respiration in the cycling of matter and flow of energy into and out of organisms.

Lessons: How Plants Make Food: Photosynthesis and Respiration (Where does a tree's mass come from?, What happens to the food a plant makes?)

Practice: How Plants Make Food: Photosynthesis and Respiration workbook

7.LS2.1 Develop a model to depict the cycling of matter, including carbon and oxygen, and the flow of energy among biotic and abiotic parts of an ecosystem.

Lessons: How Plants Make Food: Photosynthesis and Respiration (How does energy from the Sun move through a whole ecosystem?)

Practice: How Plants Make Food: Photosynthesis and Respiration workbook

7.LS3.2 Construct an explanation to describe how the impact of changes to genes (i.e., mutations) located on chromosomes may result in harmful, beneficial, or neutral effects to the structure and function of the organism.

Lessons: Genes and Traits: Heredity and Punnett Squares (What happens when a gene changes?)

Practice: Genes and Traits: Heredity and Punnett Squares workbook

7.PS3.2 Develop a model to explain how food is utilized through chemical reactions to form new molecules that support growth, resulting in the release of energy as matter moves through an organism.

Lessons: How Plants Make Food: Photosynthesis and Respiration (What happens to the food a plant makes?)

Practice: How Plants Make Food: Photosynthesis and Respiration workbook

7.PS1.3 Develop a model to explain how changes to a system can be explained by changes in temperature and/or pressure and the effect of those changes on particle motion and/or spatial arrangement.

Lessons: Hot and Cold: Particles on the Move (Why do bike tires go soft in winter?, Why does food colouring spread faster in hot water?, How does a thermometer know?) (partly)

Practice: Hot and Cold: Particles on the Move workbook