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Description This product is a round protractor the swing arm can slide 360 deg... Description This product is a round protractor the swing arm can slide 360 degrees without dead angle which is more convenient for teachers to demonstrate right angles and obtuse angles for students. This tool also helps students to standardize... more

Description This is an interesting and meaningful plaything for kids to learn ... Description This is an interesting and meaningful plaything for kids to learn the letter and geometric shapes. Smooth edges and corners without burrs care for kid s delicate skin. You and your kids can use them with the peace of mind. Features -... more