Insect life cycles: complete metamorphosis
Insect life cycles — complete metamorphosis in detail. Egg → larva → pupa → adult. The larva (caterpillar, grub, maggot) looks completely different from the adult. Inside the pupa the body is rebuilt. Butterflies, beetles, flies, and ladybirds all undergo complete metamorphosis.
Lesson
Set out your lesson
“Complete metamorphosis has four stages: egg, larva, pupa and adult. A caterpillar is a butterfly larva. The larva eats and grows; body structures change during the pupal stage. The pupa is living, not a dead or simply sleeping adult. A chrysalis is a butterfly pupa; a cocoon is a covering made by some insects. Safety: No insect handling, breeding or purchased kits. Stop: Stop after the two paper life cycles. Do not collect eggs, rear insects or open a pupa.”
Bring to the table
- Paper
- Pencil
Extra for the adult
Worked example. I put pupa after larva and before adult. Its answer card is body reorganises and adult structures develop, not eats leaves to grow. Both butterflies and ladybirds follow egg → larva → pupa → adult even though their larvae look different.
Optional challenge. Explain why an arrow from adult to egg represents reproduction into a new generation, not the adult turning into an egg. Adult key: Adults produce eggs through reproduction; an adult body does not shrink back into its own egg.
What to notice. Keep the rings and corrected sentence. Note any stage names supplied while labels were covered.
Share and support
Family records and proof options
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Learning resources
Extra practice links — they do not replace Gakuva’s teaching approach.
US Forest Service · Practice link — not the full lesson
Butterfly Pollination
Before you open · source notes
Butterfly Pollination supports Insect life cycles: complete metamorphosis. An adult previews and guides; this is a learning page, not a scored quiz.
Free educational page, no sign-in required for the tested path.
Before you openAsk the learner one fact they learned and one question they still have.
Opening this link does not save learning or assess mastery.
Source, access and review notes
Public US Forest Service page. An anonymous GET on 2026-11-12 returned HTTP 200 with no login or payment prompt for this URL. Opening the link does not save practice or assess mastery. An adult should preview and guide the learner.
US Forest Service. “Butterfly Pollination.” External page; Gakuva does not copy, host, embed, or redistribute materials.
Unknown — link only
Check understanding
- Name the four stages of complete metamorphosis using the correct terms: egg, larva, pupa, adult
- Explain that the larva stage is when the insect eats and grows, and the pupa stage is when its body transforms
- Give at least two examples of insects that undergo complete metamorphosis such as butterflies and beetles
“Can your child explain the full life cycle of a beetle or butterfly using the proper words — egg, larva, pupa, adult — and tell you what happens at each stage?”
Curriculum record
- Type
- Conceptual
- Subject
- Science
- Domain
- Insects & Minibeasts
- Age range
- Ages 7–9
Standards