Teach a variety of topics including graphing, operations, fractions, and decimals. Include 8 array transparencies and 8 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. All-in-one, self-storing solution is convenient for teachers and easy to implement. Magnetic demonstration version and plastic student version coordinate for an integrated teaching experience. Include a Getting Started Activity Guide. Ages 6+.