Home | KS2 Maths Lessons | Number (fractions) | Hungry Caterpillar

# Number (fractions): Hungry Caterpillar

## Challenge level ⭐

(designed for children with prior knowledge of the Year 3 programme of study)

Learning Objective

We are learning how to solve a natural world problem by using and applying our skills and knowledge of number and fractions.

Useful prior knowledge:

• To find and write a unit fraction (half, third, quarter, sixth) of a discrete set of objects

https://www.bbc.co.uk/programmes/p01ck05k/player

Credit: BBC Two - Wonders of Nature

## Clip Description

A caterpillar is the larva of a butterfly or moth. It’s the second stage in a four-stage life cycle of egg, larva, pupa and adult. Just like in Eric Carle’s book, The Hungry Caterpillar, these curious creatures have a huge appetite. They begin eating the moment they eat their way out of their egg. Before pupating, a caterpillar’s mass can be 100 times greater than when it emerged from its egg.

In this fascinating clip, we see a a variety of butterfly caterpillars chomping their way through leaves. When the hungry caterpillars finally stop eating, their transformation into one of nature’s most beautiful insects begins.

## Quick Whiteboard Challenge

We have learnt that a caterpillar’s mass can become 100 times greater after munching on leaves day after day.

Can you think of a number and make it 100 times greater?