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For younger learners

  • Early Years Foundation Stage

Sponge Sections

Age 7 to 11
Challenge Level Yellow starYellow star
Primary curriculum
  • Problem
  • Getting Started
  • Student Solutions
  • Teachers' Resources

You have been given three shapes made out of sponge: a sphere, a cylinder and a cone.

spherecylindercone

You are going to make some shapes for printing out of these sponges.

How would you cut the sphere to make the largest circle for printing?
How could you make the largest possible circle from the cylinder ... and the cone?

Which shape would you use to make a very small circle for printing?

If you cut the shapes in different ways, what other shapes for printing could you make?

If you make two cuts, are other shapes possible?

You may also like

Which Solid?

This task develops spatial reasoning skills. By framing and asking questions a member of the team has to find out what mathematical object they have chosen.

Cylinder Cutting

An activity for high-attaining learners which involves making a new cylinder from a cardboard tube.

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The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

NRICH is part of the family of activities in the Millennium Mathematics Project.

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