NGSS HS-LS4-5
The Standard
Evaluate the evidence supporting claims that changes in environmental conditions may result in: (1) increases in the number of individuals of some species, (2) the emergence of new species over time, and (3) the extinction of other species.
Next Generation Science Standards
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students evaluate data linking environmental change to shifts in population size, inherited traits, species formation, or extinction. They compare competing claims, cite specific evidence, and explain likely cause and effect.
What Mastery Looks Like
- A student can use a graph or table to decide whether evidence supports population growth, separation into new species, or extinction. They cite exact trends and connect environmental pressure to survival and reproduction.
Common Misconceptions
- Students often say individual organisms develop needed traits because the environment demands them. They may treat matching trends as proof of causation, or confuse population decline with extinction and trait change with speciation.
How to Assess It
- Give students paired graphs showing seed hardness, beak-size frequencies, and finch counts on an island with drought and one without. Ask them to select one claim, cite two data points, and explain the causal link.
Lesson moves
Ways to Teach It
Change a paper habitat from green to brown, collect colored beads with tweezers, double the survivors, and graph three generations.
Write a CER response: Did deforestation cause the bird decline, or merely occur alongside it? Cite two data points.
Sort scenario cards into population increase, speciation, or extinction, then match each outcome to the strongest evidence card.
Analyze local fertilizer runoff and dissolved oxygen data, then predict which pond species will increase or disappear.
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Printable HS-LS4-5 Worksheet
A ready-to-print activity worksheet aligned to HS-LS4-5, with an answer key for the teacher on its own page. No account needed.
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Construct an argument supported by evidence for how plants and animals (including humans) can change the environment to meet their needs.
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