Material: Wood Size: 23.3*14.8*1.6CM How to play:1. Take out some mixed wooden sticks with four colors, let your baby pick them out according to color, and then count them, how many red ones, how many yellow ones, etc.2. Use number sticks to teach your baby arithmetic, for example: take out two green sticks, then three yellow sticks, let the baby count how many there are, and keep saying 2+3 to the baby =5.3. Take out the corresponding number blocks and addition, subtraction, multiplication and division operation symbol blocks, and use the number sticks to perform mathematical operations, which can help your baby understand how to write numbers and operation symbols as soon as possible.Educational purpose: Let the baby know the four colors of red, yellow, green and blue; cultivate the concept of numbers for the baby; and gradually perform arithmetic operations from easy to difficult. Packing list: 1*educational toy1. Please allow slight errors due to manual measurement. Please make sure you don't mind before bidding.2. Due to different monitors, colors may vary, please understand. Note:Hello, please pay attention to your shipping address when purchasing the product. If your delivery information (e.g. name, street, house number, doorbell/email without name, etc.) is incorrect, your order will not be delivered correctly.