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Learning Resources 9"X 11" Double Sided x-Y Axis Dry Erase Mats, Graphing, Math Classroom Accessories, Teaching Aids, Set of 10, Ages 6+ auspowers_batchthree all metal design USB CLearning Resources 9"X 11" Double Sided x Y Axis Dry Erase Mats, Graphing, Math Classroom Accessories, Teaching Aids, Set of 10, Ages 6+ Perform multiple graphing activities with the Learning Resources dry erase mats. They are plastic coated and have a One centimeter grid with bold x and Y axes and a blank writing surface on the back. The dry erase Learning board mats are an easy, convenient way to practice math problems without using sheets of paper.