





McCutcheon, Randall; Schaffer, James; Wycoff, Joseph



Karen C. Fuson; Children's Math Worlds Research Project; National Science Foundation




Glencoe McGraw Hill






Glencoe Macmillan/McGraw Hill

Edwards, George C.; Wattenberg, Martin P.; Lineberry, Robert L.

Edwards, George C.; Wattenberg, Martin P.; Lineberry, Robert L.

Macmillan/Mcgraw-Hill

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