This study investigated the developmental relationship between children's mental representations of the arithmetic change problem structure (the change problem schema) and their use of part-whole ...

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Solving word problems is a key component of math curriculum in primary schools. One must have acquired basic language skills to make sense of word problems. So why do children still find certain word ...

Key points Word problems that can be solved by the same arithmetic operation have varying difficulty. Problems that involve the inverse relation between addition and subtraction are more challenging.