Students put all their addition and subtraction skills together to solve equations.

Represent teen numbers with addition and subtraction equations involving one 10. Represent 10 using a number bond and 10-frame with a missing addend. Use Notice and Wonder with a 10-frame ...

Our Brain Typically Overlooks This Brilliant Problem-Solving Strategy People often limit their creativity by continually adding new features to a design rather than removing existing ones ...

The problem-solving strategies used by schooled and unschooled Nigerian children to solve simple addition and subtraction word problems were studied using clinical interviews to find the effect of ...