00691 a2200169 4500 121164 9780866513128 Escola Canadense de Niteroi Hope, Jack Mental math in the middle grades USA il. 1987 Play "mind games" in the classroom with 36 reproducible lessons that make it easy for students to add, subtract, multiply, and divide in their heads! Power Builder practice sets, step-by-step teaching notes and transparency masters, answers, progress tests, and "Mental Athlete" anecdotes make this a fun way to teach math computation. Grades 4-6 Math BK 0 0 0 0 80.1 80.1 2024-02-09 0 A16055 2024-02-09 21:16:58 2024-02-09 BK 121164 121164