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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 claim does this record support?
  2. 2. What do both life cycles have in common?
  3. 3. What does this record not tell you?
  4. 4. What would you expect a beetle's cycle to include?
2.What hatches from a fish's egg?
  • A.A tadpole
  • B.A caterpillar
  • C.A tiny larva that grows into a young fish
3.Which four things do all life cycles share?
  • A.Flowers, seeds, fruit and leaves
  • B.Eggs, wings, legs and tails
  • C.Birth, growth, reproduction and death
4.A kitten is born alive rather than hatching from an egg. Does it still have a life cycle?
  • A.Yes: birth, growth, reproduction and death
  • B.No, cats do not grow
  • C.No, only animals from eggs have one
5.What is the right order for a chicken's life cycle?
  • A.Adult hen, chick, egg, young hen
  • B.Egg, chick, young hen, adult hen
  • C.Chick, egg, adult hen, young hen
6.Which stage of a butterfly's life cycle does most of the eating?
  • A.The caterpillar
  • B.The chrysalis
  • C.The egg
7.What is the right order for a frog's life cycle?
  • A.Tadpole, frogspawn, adult frog, froglet
  • B.Froglet, tadpole, frogspawn, adult frog
  • C.Frogspawn, tadpole, froglet, adult frog

LessonPrint · 3-LS1-1 · Set 2 · free to copy for classroom use

Answer key — Caterpillars and Frogspawn

Set 2. Prints on its own sheet.

  1. 1.1. Life cycles are diverse, but all include birth, growth, reproduction and death. 2. Both begin as eggs, grow, produce eggs of their own, and end in death. 3. It does not tell you how long each stage lasted. 4. Birth, growth, reproduction and death, with its own stages between.
  2. 2.A tiny larva that grows into a young fish
  3. 3.Birth, growth, reproduction and death
  4. 4.Yes: birth, growth, reproduction and death
  5. 5.Egg, chick, young hen, adult hen
  6. 6.The caterpillar
  7. 7.Frogspawn, tadpole, froglet, adult frog

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