When the Habitat Changes is a free printable Grade 3 science worksheet on judging a solution for living things when the environment changes, aligned to Common Core standard 3-LS4-4. It prints 2 questions with an answer key on its own sheet of paper, in 25 versions, 14 of them with different questions, so no two pupils in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 19 of 25 · the same problems every time you open this link.

One paper per pupil

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Set 1 has all 25 in a single PDF. 14 of these 25 sets ask different questions — this skill does not have 25 questions to give. The rest reorder them, so no two pupils have the same paper in front of them.

When the Habitat Changes

3-LS4-4

NameDate

Write your answer. Use the checklist.

1.A pond is stocked with fish that eat the tadpoles. Judge a solution.

Name the solution
Say which living things it helps
Say what it might harm

2.A stream warms up after trees beside it are felled. Judge a solution.

Name the solution
Link it to the trout
Say how long it would take

LessonPrint · 3-LS4-4 · Set 19 · free to copy for classroom use

Answer key — When the Habitat Changes

Set 19. Prints on its own sheet.

1.A solution protecting the tadpoles from the fish, naming what it helps and what it might harm.
2.A solution such as replanting to shade the stream for the trout, with the time it would take.

More practice for 3-LS4-4

Judge a solution for what happens to living things when their environment changes.

Teaching this next? When the Habitat Changes is the 55-minute plan for it, with the misconceptions to expect.

All Grade 3 worksheets

Last reviewed 2026-09-05. Aligned to 3-LS4-4 of the Next Generation Science Standards.