Transparent 3-D shapes fashioned in bright, bold colors Explore geometry, volume, and other math concepts Easy to fill with liquid or dry-fill, and easy to clean There's magic to be found in new math skills, which help kids understand the world around them and lay down a solid foundation in science, engineering, and other STEM skills, school supplies,teacher supplies! A Brighter Back to School: Make this the smartest back-to-school yet with toys and tools from Learning Resource trusted by teachers and parents alike since 1984!