TEAPH Math Decomposition Ruler, Portable Plastic Subtraction Ruler, High-quality Within 20 Pink/Blue Teaching Demonstration Addition Ruler School Supplies

??All items are 100% and high quality.Wish it can bring happy to you.Analyze addition and subtraction to make it easy for children to learn.
numbers and accurate decomposition. Arithmetic learning, educational toy, durable, smooth.
This plastic ruler is a teaching aid designed specially for the kid.
It is a wonderful way to arouse your baby’s interest of cognition of numbers.
In addition, your baby’s thought can also be exercised greatly. Playing with your kids will make them happy.
Specifications:
Material: Plastic
Color: Pink, Blue
Scale Length: 20cm
Ruler Length: 25.5cm
Usage:
Slide the ruler to select numbers from the box, observe the numbers in the middle combination, and determine that the numbers in the box are the sum of the upper and lower numbers on the right.

Note:
1.The actual color may be a little different from the picture.
2.Due to manual measurement, the size may have 0-1cm difference.

Package Included:
1 * Math Decomposition Ruler
Math Decomposition Ruler Subtraction Ruler Addition Ruler Plastic Pink/Blue Within 20 Portable Teaching Demonstration School Supplies High-quality Durable??Wre are from China. And We will ship your order as soon as possible after receive your payment.