This collection contains resources from the website 1001mathproblems.com by Sian Zelbo. The nets of 3D shapes are presented in a variety of challenges. All of the problems require 3D spatial reasoning. The where appropriate, materials are provided in a way that students can cut out the nets to test their answers. The materials are ideal for use with Key Stage 3 students.  

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Which net?

This puzzle involves deciding which of two nets will form a shape. The nets are presented in a format that allows for cutting out but the challenge is to work out the answer without this.  This resource is suitable for Key Stage 3.

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Three boxes problem

A photograph of three cubes is presented. The faces of the cubes are decorated with patterns. The challenge is to determine which box is different from the other two. This resource is suitable for Key Stage 3 and could be used as an extension when teaching nets for cubes.

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Tetrahedron colouring problem

This puzzle involves spatial reasoning relating to nets. Some nets of a tetrahedron are shown with different arrangements of colours. The challenge is to determine which one results in a different arrangement of colours when folded. This resource is suitable for Key Stage 3.

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Folded polyhedral problem

This puzzle is idea for use when teaching nets. Six nets are presented and the challenge is to decide which can be folded into polyhedral. The nets are provided in a format that allows for cutting out to test answers. This resource is suitable for Key Stage 3.

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