Polya’s Problem Solving Techniques

www.nctm.org Vol. 21, No. 2 | teaching children mathematics • September 2014 109 P: Trying to find how many go in each—well, you already finded out that, but you need to find how … T: How many boxes, right? P: Right. T: So, you’re trying to find out how many groups of 20 there are? P: Mmm-hmm. T: In 360? After discussing the problem situation,