Two or more things are equivalent if they have the same value.

A solution is a value, or set of values, that can be put in place of an unknown which makes the equation true.

Identify the missing part using knowledge of relationships and structures

Maths

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

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

In this unit pupils will identify structures within stories. They will use their knowledge of structures to create stories and use their knowledge of additive structures to solve problems. In the future it pupils will use the concept of 'same sum' to simplify and solve addition problems.

In the prior unit pupils used the most efficient and reliable strategy to find the change. In this unit pupils will  identify structures within stories and use their knowledge of structures to create stories and use their knowledge of additive structures to solve problems.

In this unit pupils will identify the mathematical structures within stories and use their knowledge of additive structures to create stories and to solve problems.

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

This model has one unknown. What is the correct missing part?

True or false. If there are three parts equivalent to the blue rod, there is only solution for the missing part.

There is only one known part in this bar model. How many possible unknown parts could there be?

Tick the equations that could represent this bar model.

Select the values that could be labelled as parts in this equation: 980 = 100 + 880

What is the missing addend in this bar model?

0.8 + 0.15 + 0.05 = 1    Which other combination of three parts has the same whole?

Complete this equation. bl = lg + {{ }} × w

Alex was training for a swimming race. On Monday he swam 1,500 m. On Wednesday he swam 1,350 m and on Friday he swam 1,500 m. How far did he swim?{{ }} m

Complete the column addition to find the sum.

Identify the missing part using knowledge of relationships and structures

Lesson outcome