Teaching Logarithm Version Toy Material: Wood Size: 16 x 8 inches Suitable for 3+ ages This colorful educational wooden toy math operation logarithmic board designed to foster children computing power! The building blocks are printed with different numbers and dots, is also corresponding to arrange in order of size. Colorful plastic circle to throw that in accordance corresponds to the digital of building blocks.10 pillar according to the order from low to high installation and develop baby's senses.Pillar is higher, the greater the number, the circles is more, colorful ladder combined with throwing circle movement, let the children learn knowledge in the interesting games, experience the change in unconsciously influenced. Guide baby to learn words, begin from the children logarithmic board toy. Fosters children computing power Pillar is higher, the greater the number, the circles is more, Colorful ladder combined with throwing circle movement, let the children learn knowledge in the interesting games Enable learning simple operation of addition and subtraction Improves hand and eye coordination Enhances social skills Brand No Brand SKU OT776TB1HVER0NAFAMZ-245942