Interactive fraction lessons are a " snap" with this modular snap-together set that includes four modules-three displaying fractions, decimals, percents, and one with fractional parts of a circle. Snap two modules together to reinforce one concept - for example, match fractions (1/4) with percents (25%). Or, snap three or four together to build more fraction equivalency skills. Each module measures 6" x 6" . Includes guide with activities.