Match fun story problems with the correct addition or subtraction expression.

This video addresses Common Core Grade 2 Standard Operations & Algebraic Thinking: Represent and solve problems involving addition and subtraction. 03/01/2017 | Rating NR ...

Esther M. H. Billings, SMP That Help Foster Algebraic Thinking, Teaching Children Mathematics, Vol. 23, No. 8 (April 2017), pp. 476-483 ...

Sometimes you can solve a problem just by using your knowledge of how addition and subtraction, or multiplication and division, are connected. But algebra can also be solved by balancing out an ...