Description: 【Double Sided Design】: This designed dry erase board features a double-sided print, with a side displaying a number line from 0-20, number keys, and ten frame, while the other side showcases a 1 to 100 number chart. This setup allows students to effectively practice addition and subtraction in ample space, enhancing interactive learning 【Good for Young Learners】: Measuring 12 inches by 9 inches (30.5 cm x 22.9 cm), this math dry-erase board is tailored for beginners to boost group learning engagement. The spacious surface enables easy execution of addition, subtraction, and number comparison tasks, fostering collaboration among students 【Feature】: These reusable math dry erase boards provide an economical solution by allowing students to solve problems on erasable surface, significantly reducing paper usage 【Smooth Writing and Easy Erasing】: Featuring a smooth and sturdy surface, this dry-erase board ensures effortless writing and erasing experiences. Its advanced manufacturing process guarantees a hassle-free experience while the elegant design enhances readability and minimizes distractions 【Comprehensive Set for Classroom Use】: Each package includes 10 sheets made from coated paper material, making it an ideal choice for classroom settings where multiple boards are needed for group activities or individual practice Specification: Material: Paper   Size Chart: 30.5cmx22.9cm/12.01inchx9.02inch Package Includes: 10x Dry Erase Number Bond Whiteboard Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.