Bar models in addition and subtraction problems - 4th grade math

This is an introductory lesson for using bar models (diagrams) in simple addition and subtraction equations and word problems. First we solve simple equations involving either addition or subtraction with the help of the bar model. Then we solve some word problems.

See also

Introduction to prime numbers — video lesson

Math Mammoth Grade 4 curriculum

Back to the list of 4th grade videos

Back to the index of all videos