Abaco 20, 10 blue/ 10 red, blocks

For more fun in math class. The Abaco 20 learning device is ideal for introducing students to mathematics. Your students will visually learn to count to 20 and can solve addition and subtraction problems more easily. With a simple hand movement, the red and blue balls can be flipped, revealing the gray underside and making the balls disappear. Only the balls that are needed will appear – all others will vanish. It's also perfect for home use. Thanks to its compact design, the learning device can be quickly packed into a school backpack, making it a useful tool not only in school but also at home for math homework. Provide your students with the Abaco as a simple yet very effective tool. Dimensions (W x L x H): 22 x 6 x 2 cm. Material: high-quality, non-toxic ABS plastic. Left half: blue balls. Right half: red balls.