These 9" x 12" lapboard marker boards are essential aids for teachers to motivate their students to learn, understand and reinforce key primary concepts. The pre-printed lines offer a great work place to practice penmanship, sentence writing and more. It can be used with all dry erase markers and measures 9 x 12 inches. This dry erase board is an environmentally friendly way to learn - just write, wipe off and re-use with no waste.