This paper reports the results of an experiment designed to improve secondary school students’ ability to reason and argue using mathematics. A structured pedagogical intervention was created to foster a… Click to show full abstract
This paper reports the results of an experiment designed to improve secondary school students’ ability to reason and argue using mathematics. A structured pedagogical intervention was created to foster a more active role of students in the classroom. The intervention was implemented with high fidelity and was internally valid. Surprisingly, students in the control group learned significantly more than those who received treatment.
               
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