The problem scenario explores analog clocks, a rich source of tasks associated with angles and angle measures. To access the full-size activity sheet, go to, All Issues. Each month, this section of the Problem Solvers department showcases students' in-depth thinking and discusses the classroom results of using problems presented in previous issues of Teaching Children Mathematics.

Contributor Notes

Tanya Demjanenko,, is a teacher with the Toronto District School Board who is currently on secondment as a grade 5 teacher at the Jackman Institute of Child Studies, OISE, at the University of Toronto. She loves teaching, particularly mathematics.

Edited by Cathy Marks Krpan,, a professor at the Ontario Institute for Studies in Education at the University of Toronto.

(Corresponding author is Demjanenko
(Corresponding author is Krpan
Teaching Children Mathematics
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