3-D shapes
Recognise the cube, cuboid, cylinder, cone, sphere and pyramid, count faces and edges, and make a net of a cube.
📖 Start here: read the steps of the “Lesson” in order (1, 2, 3 …) and answer each question. Then continue with “Practice”.
- UK: Year 1
- France: grade 1
- Germany: grade 1
- Iran: grade 7
- Afghanistan: grade 6
- Syria: grade 1
- Palestine: grade 1
- Ukraine: grade 5
- Russia: grade 4
Guide
3-D shapes (like a box, a ball or a tin) take up space, unlike flat shapes. Children in England name them from Year 1 and count faces, edges and vertices in Year 2; Iran teaches them in grade 7 and Afghanistan in grade 6.
The first missions suit younger children too: they only tap the pictures. Read the sentences aloud if your child is not reading yet, and put real things next to the screen: a tin, a ball, a shoebox, a party hat.
A face is a flat surface of a solid, an edge is where two faces meet, and a vertex is a corner. In the pictures, edges at the back are drawn dashed. A common mistake is to count only the faces or edges you can see in the picture.
A net of a cube is six joined squares that fold up into a cube. Not every six squares make a net: six in a row, or two rows of three, do not fold into a cube.