Lưu trữ thẻ: buckeye balls magnet

Magnetic ball cube – nó bao gồm 216 nam châm đất hiếm có từ tính cao (single ball diameter 5 mm), each magnet has a north-south polarity. Simply through the magnetic ball cube can improve your geometric and mathematical aspects of intuitive perception. You can use magnetic ball magic as an educational tool to combine textbooks to learn, […]