Science · Stage 3
Lab: Order the Life Cycle
A butterfly and a frog each change through four stages — let's order them and run a fair test!
✦ Science📘 Stage 3 · S3⏱ ~10 min🧒 Ages 7–8★ Free to start
predict, then change one thing and keep the rest the same to make my test fair.
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Kavi's Life-Cycle Lab
Kavi pulls on a lab coat 🥼 and peeks into two tanks. "In this one, eggs are turning into caterpillars 🐛. In that one, eggs are turning into tadpoles 🐟!" Kavi grins. "Every butterfly and every frog changes through four stages, always in the same order — egg to grown-up. Let's order them, then run a fair test to find out what helps them grow!"
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What your child will learn
1A butterfly's life cycleA butterfly changes through four stages. Tap each one to follow it from egg to grown-up!
2A frog's life cycleA frog also changes through four stages, in its own way. Tap each one from egg to grown-up!
3A butterfly and a frogLook at the butterfly 🦋 and the frog 🐸. Are they together or apart? Tap each card.
4Run a fair testKavi tests what helps tadpoles grow. Predict the fair choice, then tap to check! Tap Next test for more.
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A peek inside
A butterfly lays an 🥚 egg. Put the four stages in order from egg to grown-up.
The order never changes: egg, then caterpillar, then chrysalis, then butterfly.
Try this at home: Put in order from egg to grown-up: chrysalis egg butterfly caterpillar
Ready to play and learn?
Start the free interactive lesson, or print the handout for screen-free play.
Part of Science · Stage 3 · S3 on KAVI Academy — a secular, whole-child learning platform for ages 5–12.