Billstein, Rick
A problem solving approach to mathematics for elementary school teachers
Pearson Addison Wesley, 2007
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Woods, Donald R.
Problem-based learning: how to gain the most from PBL / Donald R. Woods
Waterdown, 1994
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Woods, Donald R.
Problem-based learning : resources to gain the most from PBL / Donald R. Woods
Waterdown, 1999
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Robertson, S. Ian
Problem solving
Psychology Press, 2001
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The psychology of problem solving
edited by Janet Davidson, Robert J. Sternberg
Cambridge university , 2003
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