"The federal What Works Clearinghouse is intended to help educators and administrators assess the evidence for the effectiveness of various educational ideas, methods, and curricula. Four reviews, focusing on mathematics programs for elementary school, were posted between September and December, 2006. The four programs reviewed were Everyday Mathematics, Houghton Mifflin Math, Saxon Elementary School Math, and Scott Foresman Addison Wesley Mathematics. The reports survey available studies on each program, evaluate the studies to see if they meet evidentiary standards, and provide a summary assessment. Of the four programs, only Everyday Mathematics received a positive judgment: "The WWC found Everyday Mathematics to have potentially positive effects on mathematics achievement." The other three programs were found to have "no discernible effects on mathematics achievement."" The full reports and a list of all the studies considered can be found at
http://www.whatworks.ed.gov/.
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