Complete instructions included. ... 0236 100 BLOCKS $3.50 0237 27 BLOCKS $1.10 ARITHMETIC FLASH CARDS Grades 1 to 3 Each set contains 90 to 100 cards, mounted on rings in order of difficulty. 0249 ADDITION $1.50 0250 0251 0252 SUBTRACTION MULTIPLICATION DIVISION $1.50 $1.50 $1.50 ARITHMETICanbsp;...

Title | : | Tested/age-graded Science and Mathematics Materials for Elementary Schools |

Author | : | Science Materials Center, New York |

Publisher | : | - 1961* |

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