Rong-Ji Chen
Provide less guidance to students and engage them in challenging mathematical tasks.
Erik S. Tillema
Real-world situations involving layers of subtraction will help students in their future work with algebra.
Samuel Obara
Try this activity that requires creating two polygons from one to apply knowledge of congruency and transformations and develop spatial reasoning.
Sararose D. Lynch and Johnna J. Bolyard
A problem-solving pen pal project between preservice teachers and sixth graders presented a lens through which a sixth-grade teacher could view students’ work and her instruction.
David A. Coffland
Questions about closure on sets of numbers provide a context for hypotheses and proofs.