2D Shape
Angle Games
More to shape than meets the eye
A square in a round hole

For primary school children, two dimensional shape is about recognition of the different shapes and learning the terminology relating to shapes and their properties.

So types of shape:

triangle, rectangle, pentagon, hexagon, circle, and so on.

Generic terms:

Polygon, regular, irregular, round, straight, quadrilateral, symmetry.

Features of shape:

Diagonal, edge, vertex, angle, number of sides, parallel, colour, filled.

In the world:

Window, arch, wheel, sheet, cover.