Year  1 Term 3

Key Concepts – Number –  Multiplication and Division

• That multiplication is repeated addition.
• That counting in steps of equal sizes is based on the big idea of ‘unitising’- ie treating a group of say 3 objects as one unit of 3.
• Understanding that multiplication is commutative and working with arrays supports this by observing that 2 x 3 gives the same answer as 3 x 2.
• That the multiplication symbol is different to the addition symbol – addition is a cross + and multiplication is an x
• Understanding that doubling is adding the same number twice.
• When adding numbers with the same value (multiplying) then you have to make equal jumps of that value.  3 + 3 + 3        5 + 5 + 5 + 5      
• Begin to be able to share concrete objects equally
• Begin to use a number line to demonstrate sharing by grouping.

Key Vocabulary –

Repeated addition

Arrays

Doubling

Groups

Sharing

Counting in 2s, 5s, 10s

Key Concepts – Geometry – Properties of Shape

• To begin to understand that shapes are defined by their properties.
• To be able to name common 2D shapes including squares, circles, triangles
• To be able to name common 3D shapes including cubes, pyramids and spheres.
• To understand that the shape is the same shape in whatever orientation it is.
• That 2D shapes are the faces of 3D shapes.

Key Vocabulary –

3D and 2D

Squares, circles, triangles, rectangle,

Cubes, pyramids, spheres, cuboids, cylinders

Common Misconceptions – Multiplication and Division

The presentation of the multiplication symbol – it is not the same as an addition symbol

Sharing can be between 1,2,3,4,5 …….. and not only 2.

Multiplication is adding the same number multi times.

Common Misconception – Properties of shape

That a logic block is a 2D shape

That 2D shapes can be held – not understanding that they are a face of a 3D shape.

That a square (for example) becomes a diamond if it is rotated 45°

That a diamond is the name of a shape.