Red Hill Studios - Addison Wesley Virtual Manipulatives

The Virtual Manipulatives project consists of a wide range of playful and educational activities designed to train pre-service teachers on the use of web-based math manipulatives.

Each activity includes several levels of difficulty to provide a carefully designed learning progression. Specific topics covered by the Flash-based activities include: addition, subtraction, multiplication, division, addition and subtraction of fractions, percentages, ratios, and basic geometry.