Teach a variety of topics including graphing, operations, fractions, and decimals. Simply lay the transparencies over the cards to build over 35 unique grids. The write-on/wipe-off border allows teachers and students to model their problem-solving techniques. Details: Build-a-Grid design 12.75'' x 12.75'' x 12.75'' Build over 35 unique grids For ages 8 and up Contents: 1 student grid 8 array transparencies 8 double-sided array cards Getting Started Activity Guide