00790    a2200181   4500001000700000020001800007040003200025100001600057245003700073260000800110300000800118362000900126520035100135650000900486942000700495952008700502999001900589121164  a9780866513128  cEscola Canadense de Niteroi  a Hope, Jack10aMental math in the middle grades  aUSA  bil.0 a1987  aPlay "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 4aMath  cBK  00104070a80.1b80.1d2024-02-09l0pA16055r2024-02-09 21:16:58w2024-02-09yBK  c121164d121164