Students choose a particular Venn Diagram and then choose the geometric property for each region. They then have to place the geometric shapes in the correct region. Two thumbs up!
The Golden Rectangle is a plot created by starting with a rectangle, chopping off successive squares, and drawing quarter circles with a radius equal to the side of the square that was cut.
Choose some shapes and try to tesselate the plane with them.
Tangrams are a versatile manipulative. They can be used to build understanding of geometry, fractions, area and other topics. This is a Java implementation of tangrams.
Attribute blocks can be used to help students understand colour, shape and size. This is a lovely Java implementation of this manipulative.
Pattern blocks can be used to teach patterns and algebra, symmetry, fraction concepts and other math topics.
A collection of matching games, including multiplication tables, addition tables, equivalent fractions, and fraction-to-percent conversions. These are flash files.