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Solving arithmetic word problems links the ability to execute arithmetic operations and the ability to apply these operations in real-word situations. An appropriate recent interest in word problems has produced much data on the relative difficulty of different kinds of word problems, and some...
In learning to spell words, learners may be directed to pronounce the words in various ways. Some commercial spelling programs have learners decode dictionary pronunciation keys (also called phonetic or sound spellings). This activity serves to clarify pronunciations but it also exposes learners...
What is the relationship between the principle of commutativity and the development of addition strategies that disregard addend order? It has been proposed that the assumption (Conjecture 1) or discovery (Conjecture 2) of commutativity is a necessary condition for the invention of such advanced...
Small scale experiments have led us to believe that teaching a lot in a short time is inefficient, perhaps because it overtaxes student resources. This principle, however, has not been adequately tested in realistic instructional settings. Another untested practical notion derived from...
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