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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 would you expect a beetle's cycle to include?
  2. 2. What stage comes after the tadpole with legs?
  3. 3. What do both life cycles have in common?
  4. 4. Why are the two cycles different in the middle?
2.Which stage of a butterfly's life cycle does most of the eating?
  • A.The chrysalis
  • B.The egg
  • C.The caterpillar
3.A tadpole grows back legs, then front legs, and loses its tail. What is happening?
  • A.It is changing into a frog
  • B.It is turning into a fish
  • C.It is dying
4.How is a frog's life cycle different from a chicken's?
  • A.The chicken changes shape completely
  • B.The young frog lives in water and changes shape before it lives on land
  • C.The frog has no eggs
5.What hatches from a fish's egg?
  • A.A tiny larva that grows into a young fish
  • B.A caterpillar
  • C.A tadpole
6.What is the right order for a chicken's life cycle?
  • A.Egg, chick, young hen, adult hen
  • B.Adult hen, chick, egg, young hen
  • C.Chick, egg, adult hen, young hen
7.A kitten is born alive rather than hatching from an egg. Does it still have a life cycle?
  • A.No, cats do not grow
  • B.Yes: birth, growth, reproduction and death
  • C.No, only animals from eggs have one

LessonPrint · 3-LS1-1 · Set 23 · free to copy for classroom use

Answer key — Caterpillars and Frogspawn

Set 23. Prints on its own sheet.

  1. 1.1. Birth, growth, reproduction and death, with its own stages between. 2. The froglet. 3. Both begin as eggs, grow, produce eggs of their own, and end in death. 4. Different organisms have different stages between birth and adult.
  2. 2.The caterpillar
  3. 3.It is changing into a frog
  4. 4.The young frog lives in water and changes shape before it lives on land
  5. 5.A tiny larva that grows into a young fish
  6. 6.Egg, chick, young hen, adult hen
  7. 7.Yes: birth, growth, reproduction and death

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