Classification of efficient calculation problems and the effect of instruction using an abstract strategy.

Suzuki, M., Tanaka, E., Murayama, K., & Ichikawa, S. (2011). Classification of efficient calculation problems and the effect of instruction using an abstract strategy. Educational Technology Research, 34, 75-83.    https://doi.org/10.15077/etr.KJ00007561987    Request PDF Article