These 360Â° protractors feature dual scales so you can measure angles with openings in either direction. Protractors are 4â€ in size, have increment markings of 1Â°, are transparent and are made of shatter resistant plastic. Set contains 24 protractors.Educational products, manipulatives, and kits incorporate applied math and science principles into classroom and homeschool-based projects. Teachers in pre-K, elementary, and secondary classrooms use educational kits, products, and manipulatives alongside math, science, literacy, and STEM curriculum to demonstrate concepts and real-world applications through hands-on activities.
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