Our large foam dominoes give students a fun way to practice and reinforce key math concepts. Each game includes two sets of 24 color-coded dominoes (48 total pieces); each set is ideal for up to four players. Instructions included. Oversized dominoes are made of durable foam (4" x 2" ). Practice angle recognition and calculation with these sets. One set focuses on complementary angles; the second set on supplementary angles. Grades. 4-5.