Since their appearance more than 50 years ago, Unifix Cubes have become part of mathematics education around the world. The structured quality, bright colors, and durability of Unifix Cubes provide an exciting appeal for young children during early mathematics learning. This grade-level series by noted math educator Don S. Balka, Ph.D., provides teachers with all the resources they need to create meaningful math experiences using Unifix Cubes. The 20 activities in each book are keyed to the NCTM Curriculum Focal Points and ready to use, incorporating reproducible materials (worksheets, games, cards), teaching instructions, and assessment and extension suggestions. Unifix Cubes become an exciting learning tool as students explore conservation of quantity and one-to-one correspondence, basic operations, patterns, simple measurement and graphing, and ideas about probability.