Do Na Chi is a lecturer in the English Language Education program at An Giang University, Vietnam. Teaching English as a foreign language (EFL) at a language center for young adults, Chi wants create interesting activities that can engage students, and sees the learning center as a place for them to practice what they have learned in class. He…

As part of individual interviews incorporating whole number and rational number tasks, 323 grade 6 children in Victoria, Australia were asked to nominate the larger of two fractions for eight pairs, giving reasons for their choice. All tasks were expected to be undertaken mentally. The relative difficulty of the pairs was found to be close to that…