Teach a variety of topics including graphing, operations, fractions, and decimals. Include 8 array transparencies and 4 double-sided array cards. 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: Create over 35 unique grids Bring abstract math concepts to life using the versatility of grids All-in-one, self storing solution is convenient for teachers and easy to implement Magnetic demonstration version and plastic student version (sold separately) coordinate for an integrated teaching experience For ages 7 and up Contents: 8 array transparencies 4 double-side array cards 1 Magnetic Demonstration grid