Have you ever tried to help a child with their third-grade math homework, only to find yourself stumped? You're not alone. Many adults are surprised to discover that some of the math concepts taught ...
The Journal of Educational Research, Vol. 80, No. 6 (Jul. - Aug., 1987), pp. 363-365 (3 pages) Two classes of third-grade students in distant but similar schools were selected for the study. In the ...
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