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Montgomery County Public Schools (MCPS)
Reply to "Third grade math homework"
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[quote=Anonymous]They should start by teaching kids to set up equations and then teaching kids to solve equations with two variables only. Mark and Kevin have a total of 25 marbles. (M + K = 25) Mark has 5 more marbles than Kevin (M = K + 5) and then teach them to figure it out by substituting Kevin for Mark. ( (K+5) + K = 25 ) and solve for K All I can say is that unless they have this concept down well - the kids will flounder. I see that many kids do not even have a basic understanding of how to "isolate the variable" (solve for K in this example).[/quote]
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