Unit block facts for kids
A unit block is a type of standardized wooden toy block for children. Known also as standard unit blocks or kindergarten blocks, these building blocks are common in preschools and some kindergarten classrooms in the United States.
Sizes
A unit block is 5.5 inches long, 2.75 inches wide, and 1.375 inches thick. Larger pieces include the double (11 inches long) and quadruple (22 inches long) sizes. Smaller sizes are made in various fractions of the standard unit.
Wood
Unit blocks vary in price according to the wood used and the manufacturer. Maple blocks (the original wood put forth by Pratt) are more expensive than birch or beech, which in turn are more expensive than rubberwood.
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Unit block Facts for Kids. Kiddle Encyclopedia.