Shape Up gives practice in using the four basic geometric shapes -
circle, square, triangle and rectangle - plus a concept of large
and small. It is aimed at kids of three and upwards, but I doubt if
the "upwards" would extend much past five or six.
There are five different sections, all on some aspect of matching
shape and/or size. Two ask you to match a shape with one of two
choices by setting the points in a railway siding; in one a
burglar steals one of the shapes and you identify which one is
missing (Harder than it sounds!).
Two coloured shapes generated at random to match a set of outline
shapes. Though you fill the outlines quite quickly, the last couple
can take ages - one of the few poor design features in an otherwise
well thought out program.