LS3- Groups of organisms show evidence of change over time (structures, behaviors, and biochemistry).

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Click on the GSE numbers, e.g PS1 (K-2) - POC - 2, in the table below to reach additional information about each GSE.

Grade Span Expectations (K-4)


Grade Span Expectations (5-8)

Grade Span Expectations (HS)



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LS3 (5-6) - 9
Students demonstrate an understanding of Natural Selection/evolution by …

9a explaining how a population’s or species’ traits affect their ability to survive over time.


9b researching or reporting on possible causes for the extinction of an animal or plant.

9c explaining how fossil evidence can be used to understand the history of life on Earth.
LS3 (7-8) - 9
Students demonstrate an understanding of Natural Selection/ evolution by …

9a explaining that genetic variations/traits of organisms are passed on through reproduction and random genetic changes.

9b gathering evidence that demonstrates evolutionary relationships among organisms (e.g., similarities in body structure, early development, traits).

9c differentiating between acquired and inherited characteristics and giving examples of each.

9d explaining how natural selection leads to evolution (e.g., survival of the fittest).

9e describing how scientists’ understanding of the way species originate or become extinct has changed over time.
LS3 (9-11) - 7
Students demonstrate an understanding of
Natural Selection/ evolution by…

7a investigating how information is passed from parents to offspring by encoded molecules (e.g. evidence from electrophoresis, DNA fingerprinting).


7b investigating how the sorting and recombination of genes in sexual reproduction results in a great variety of possible gene combinations in the offspring of any two parents. (e.g. manipulate models to represent and predict genotypes and phenotypes, Punnett Squares, probability activities).

7c citing evidence of how natural selection and its evolutionary consequences provide a scientific explanation for the diversity and unity of past and present life forms on Earth.(e.g. Galapagos Islands, Hawaiian Islands, Australia, geographic isolation, adaptive radiation).
Example Extension(s)
LS3 (Ext) - 7
Students demonstrate an understanding of
Natural Selection/ evolution by…

7aa distinguishing the stages of mitosis and meiosis and how each contributes to the
production of offspring with varying traits

7bb researching and reporting on the contributions of key scientist in understanding evolution and natural selection (e .g. Darwin, Wallace, Mendel).

7cc trace the evolution and migration of Homo sapiens.