Geometry (2D & 3D shapes): Crystal Match

1 - Learning Objective

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 geometry and 3-D shapes.

Useful prior knowledge:

  • To recognise and describe 3-D shapes using correct mathematical language (faces, vertices, and edges).
  • To recognise and describe 2-D shapes on the faces of 3-D shapes

Credit: BBC REEL

Clip Description

In nature, crystals can form when liquid rock (magma) cools slowly and hardens into solid patterns of interesting 3D shapes. Many valuable crystals such as diamonds, rubies and emeralds form in this way.

In this fascinating clip, we are taken on a journey into one of the largest crystal caves ever found. Known as a geode, the cave contains numerous supersized gypsum crystals that started growing around 2 million years ago. What shape do you think the crystals will be? Watch the clip to find out.

Quick Whiteboard Challenge

In the clip, we learn that the supersized gypsum crystals are around 2 m tall.

Can you estimate the difference between your height and a crystal from the cave?