1. a) An ice-cream cone is made up of a combination of two 3-D shapes. Can you tell what they are from looking at the picture?
b) Make a list of other objects that are made up of combinations of 3-D shapes.
Nets of 3-D Shapes A net is a 3-D shape that is waiting to be assembled.
2. a) Study the following nets and see if you can spot which 3-D shape they make. Here’s a list of shapes to help you, but not every shape on the list has a matching net below.
triangular prism sphere
cuboid cube cylinder cone pyramid tetrahedron
b) Now draw the nets onto different pieces of paper. Cut them out and assemble them into their 3-D shapes to see if you were right.
Puzzler
There is one 3-D shape that has no net. Can you guess which one it is? Discuss it with the people near you and see if you can agree on an answer. Why does it not have a net?