Blocks are one of the most important play and learning materials for children. They have remained the classic fixture in early learning environments, since the 19th century because they provide rich opportunities for play that addresses all developmental domains. Blocks take shape according to children’s actions on them. As the blocks respond, they in turn, elicit further action from the child. All types of blocks are highly responsive and dynamic play and learning materials. Unit blocks have special advantages, in that they are mathematicially precise, large enough to create clear representations, impressive in size and proportion and handsome to look at. Recognizing that there are many types of blocks that help children achieve similar types of learning. Unit blocks are however unique and essential in ECE because of their potential to promote representational thinking and spatial relationships. Helps the children feel strong and masterful as well as provide opportunities to be creative.