AXIOAXIO

Operations Models, Bar Models, and Word Problems

Operations become model selection, bar models, multi-step reasoning, and remainder interpretation.

01Add-subtract situations

Model one-step part-whole and comparison problems.

Add Sub Word Problems One StepBar Model Part WholeBar Model Comparison
02Two-step add-subtract

Plan and check two related operations.

Add Sub Word Problems Two StepEstimation Reasonableness
03Multiply-divide situations

Use equal groups and multiplicative comparison.

Multiply Divide Word Problems One StepBar Model Multiplicative Comparison
04Multi-step word problems

Choose operation order, interpret remainders, and explain the model.

Multiply Divide Word Problems Two StepRemainder InterpretMulti Step Word Problem Mixed OperationsWord Problems Bar Model