Lesson time becomes exciting when WEDGiTS™ are used to help introduce new math and science concepts. Teachers or home-schooling parents easily demonstrate geometric relationships, vertical and horizontal alignment, sorting, pairs, size relationships, measurement, balance and even molecular designs. Yes, you can actually build a water molecule from your WEDGiTS™ kit! This 90-piece set of WEDGITS™ was designed around the developmental requirements suggested by the teacher market. Package includes six 15-piece sets of WEDGITS™, a set of WEDGITS™ Design Cards, a Parent/Teacher Activity Guide and a WEDGITS™ Jumping Frog design poster to support classroom, home schooling, and/or daycare activities. The design cards segment 15-piece designs into graduated building levels that allow the teacher to assess each child’s reasoning and manipulative skills. The front side of each Design Card offers a color rendering of the design while the back side offers a black and white rendering (along with a quantity and size reference for each block required). This allows for peer-to-peer verbal building instruction.