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Direct linkViadero, Debra – Education Week, 2007
In the recent textbook review by the federal What Works Clearinghouse, only one out of four elementary school math programs has received even a qualified nod from evaluators for its research record. The result shows that most major commercial textbooks can not yet muster the proof that they are any better than their competitors at improving…
Descriptors: Textbooks, Mathematics Instruction, Program Effectiveness, Elementary School Mathematics
