There are four 2-D shapes which children should become familiar with in Year 1. These are circle, rectangle, square and triangle. Unfortunately they are not the easiest words to spell! Children should be able to discuss the properties of these shapes, in particular the number of sides and corners they have. Of course the real world is made up of millions of examples of these shapes – look out for them wherever you go.
Some children might spot that a square is a special kind of rectangle- more of this as they get older.