An exciting collection of mathematics manipulatives used to explore a wide range of mathematical topics at the elementary and middle school level. Students can explore basic number relationships, addition, multiplication facts, prime and composite numbers, square roots, proportions, fractions, algebraic equations, spatial visualisation, patterns, perimeter, area, and volume. Kit includes all of the components to build one Weigh Too Equation Balance, 100 specially weighted interlocking cubes (25 each yellow, orange, light green and dark green), a blank grid, a 1-100 grid, and measuring rulers in three dimensions (1-10, 11-20, and 21-30) all in a rugged plastic storage case. Assembly instructions included. 120 piece kit. Use with one to two students per kit. Grades 3 and up.