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Caterpillars and Frogspawn is a free printable Grade 3 science worksheet on using eight weeks of observations to compare two animal life cycles, aligned to NGSS performance expectation 3-LS1-1. It prints 7 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

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Caterpillars and Frogspawn

3-LS1-1

NameDate

Read the record, then answer the questions.

1.Read the record, then answer the questions.

Two Life Cycles Watched

Observations the class kept of caterpillars and frogspawn over eight weeks. WHAT WE WATCHED Butterfly: egg, caterpillar, chrysalis, adult, eggs again Frog: egg, tadpole, tadpole with legs, froglet, adult, eggs again Both started as eggs. Both grew, then produced eggs of their own. Neither adult lived past the end of the year.

  1. 1. What do both life cycles have in common?
  2. 2. What stage comes after the caterpillar?
  3. 3. What does this record not tell you?
  4. 4. What stage comes after the tadpole with legs?
2.How is a frog's life cycle different from a chicken's?
  • A.The young frog lives in water and changes shape before it lives on land
  • B.The frog has no eggs
  • C.The chicken changes shape completely
3.Which four things do all life cycles share?
  • A.Birth, growth, reproduction and death
  • B.Flowers, seeds, fruit and leaves
  • C.Eggs, wings, legs and tails
4.What is the right order for a frog's life cycle?
  • A.Froglet, tadpole, frogspawn, adult frog
  • B.Tadpole, frogspawn, adult frog, froglet
  • C.Frogspawn, tadpole, froglet, adult frog
5.Why is a life cycle called a cycle?
  • A.The adult makes young, and they go through the same stages again
  • B.Every stage is round
  • C.It happens on a bicycle
6.What do the life cycles of a chicken, a frog and a fish all have in common?
  • A.Each has a chrysalis
  • B.Each begins as an egg, grows, and makes young of its own
  • C.Each is born alive
7.What hatches from a fish's egg?
  • A.A tiny larva that grows into a young fish
  • B.A caterpillar
  • C.A tadpole

LessonPrint · 3-LS1-1 · Set 24 · free to copy for classroom use

Answer key — Caterpillars and Frogspawn

Set 24. Prints on its own sheet.

  1. 1.1. Both begin as eggs, grow, produce eggs of their own, and end in death. 2. The chrysalis. 3. It does not tell you how long each stage lasted. 4. The froglet.
  2. 2.The young frog lives in water and changes shape before it lives on land
  3. 3.Birth, growth, reproduction and death
  4. 4.Frogspawn, tadpole, froglet, adult frog
  5. 5.The adult makes young, and they go through the same stages again
  6. 6.Each begins as an egg, grows, and makes young of its own
  7. 7.A tiny larva that grows into a young fish

Last reviewed 2026-09-05. Aligned to 3-LS1-1 of the Next Generation Science Standards.