📚 Elevate Learning: Where Math Meets Fun! Easily store and transport for classroom or home use. Transform learning with our dual-sided number line! Reduce paper waste with our dry erase technology. 100% money-back guarantee for peace of mind. High-quality coating for effortless writing and erasing. Compact size Eco-friendly design Double-sided utility The Dry Erase Addition & Subtraction White Board is a versatile educational tool designed for young learners. Measuring 4" x 12", this double-sided lapboard features a number line for addition and subtraction practice, a smooth writing surface for easy erasing, and an eco-friendly design that minimizes paper waste. Perfect for classrooms or home use, it offers a compact solution for effective math instruction.