How Do Scientists Graph Evolution
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About this worksheet
Show students how scientists actually measure evolution with this scaffolded grades 5-8 science worksheet built on the teach-observe-reason model. Students read how a trait's frequency is tracked across generations, then plot a real-style dataset on a line graph and interpret the trend.
The data activity uses a model rock pocket mouse population on dark lava rock, paired with the classic peppered moth example, so students see natural selection as a population-level change, not an individual one. A built-in Claim-Evidence-Reasoning prompt targets the common misconception that single organisms change during their lifetime.
Includes a labeled plotting grid, a fill-in vocabulary passage, graph-type reference icons (line graph, bar graph, cladogram), multiple-choice checks, and a complete answer key with the line correctly plotted in red. Aligned to NGSS MS-LS4-6. Just print and teach.
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