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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 does this record not tell you?
  2. 2. What stage comes after the caterpillar?
  3. 3. What claim does this record support?
  4. 4. Why are the two cycles different in the middle?
2.What is the right order for a chicken's life cycle?
  • A.Chick, egg, adult hen, young hen
  • B.Adult hen, chick, egg, young hen
  • C.Egg, chick, young hen, adult hen
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 dying
  • C.It is turning into a fish
4.A kitten is born alive rather than hatching from an egg. Does it still have a life cycle?
  • A.No, only animals from eggs have one
  • B.No, cats do not grow
  • C.Yes: birth, growth, reproduction and death
5.Which stage of a butterfly's life cycle does most of the eating?
  • A.The egg
  • B.The caterpillar
  • C.The chrysalis
6.What is the right order for a frog's life cycle?
  • A.Froglet, tadpole, frogspawn, adult frog
  • B.Frogspawn, tadpole, froglet, adult frog
  • C.Tadpole, frogspawn, adult frog, froglet
7.What do the life cycles of a chicken, a frog and a fish all have in common?
  • A.Each begins as an egg, grows, and makes young of its own
  • B.Each has a chrysalis
  • C.Each is born alive

LessonPrint · 3-LS1-1 · Set 21 · free to copy for classroom use

Answer key — Caterpillars and Frogspawn

Set 21. Prints on its own sheet.

  1. 1.1. It does not tell you how long each stage lasted. 2. The chrysalis. 3. Life cycles are diverse, but all include birth, growth, reproduction and death. 4. Different organisms have different stages between birth and adult.
  2. 2.Egg, chick, young hen, adult hen
  3. 3.It is changing into a frog
  4. 4.Yes: birth, growth, reproduction and death
  5. 5.The caterpillar
  6. 6.Frogspawn, tadpole, froglet, adult frog
  7. 7.Each begins as an egg, grows, and makes young of its own

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