3-LS4-4

Science3rd GradeBiological Evolution: Unity and Diversity

The standard

Make a claim about the merit of a solution to a problem caused when the environment changes and the types of plants and animals that live there may change.

Next Generation Science Standards

What this standard means

Students need to explain a simple environmental change, then judge a possible solution for helping plants or animals survive there. They should make a claim and support it with evidence, such as what the organism needs, what changed, and how the solution helps or does not help.

Mastery looks like a clear claim, evidence tied to the organism’s needs, and a reasoned judgment about the solution’s merit. Students often get stuck by describing the problem only, picking a favorite solution without evidence, or trying to solve too many changes at once.

Ways to teach it

  • Give groups a pond map with reduced water, animal cards, and solution cards, then have them choose and defend the best fix.
  • Ask students to write: Which solution best helps frogs after the pond gets smaller, and what evidence supports your claim?
  • Show one habitat change and two solutions, then have students circle the stronger solution and write one evidence sentence.
  • Connect to a local example, like adding shade plants near a school garden after summer heat dries the soil.

Plan a lesson for 3-LS4-4

Generate a complete lesson plan aligned to this standard, with objectives, activities, and materials. Free, no account needed.

Related standards

  • HS-LS2-6

    Evaluate the claims, evidence, and reasoning that the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms in stable...

  • HS-LS4-5

    Evaluate the evidence supporting claims that changes in environmental conditions may result in: (1) increases in the number of individuals of some species, (2) ...

  • K-ESS2-2

    Construct an argument supported by evidence for how plants and animals (including humans) can change the environment to meet their needs.

  • 3-LS4-3

    Construct an argument with evidence that in a particular habitat some organisms can survive well, some survive less well, and some cannot survive at all.

Standard text verified against nextgenscience.org on July 10, 2026.

Page updated July 10, 2026.

Send Feedback