This 1\/2" Grid Lapboard is perfect for the classroom, home and even travel. One side of the sturdy melamine whiteboard features the 1\/2" grid pattern for multiple, math and science-related activities and lessons. Plain\/blank surface on back can be used for teaching multiple activities and lessons. Dry-erase surface erases cleanly and easily. Lapboard is great for interactive instruction to test concept understanding or work with small groups.