Use knowledge of part-part-whole structure to solve additive problems

Explain how a combination of different parts can be equivalent to the same whole

Identify structures within stories and use knowledge of structures to create stories

Identify the missing part using knowledge of relationships and structures

Use a model to interpret a part-part-whole problem with three addends

Create stories to match structures presented in a model

Use knowledge of additive structure to solve problems

Use mental strategies and known facts to calculate the value of a missing part

Use written strategies and known facts to calculate the value of a missing part

Represent an equation in a part-part-whole model correctly

Use part-part-whole structures to solve additive problems in a range of contexts