Understand and give meaning to mathematical data.

Not wasting time or effort. An efficient strategy is one we can carry out easily.

Addition or subtraction that crosses the 10 boundary.

The result of subtracting one number from another. Way in which two or more things we are comparing are not the same.

Use knowledge of calculating within 20 to solve problems involving statistics

Maths

Add three addends

Use a 'First, then, then, now' story to add three addends

Explain that the addends can be added in any order

Add three addends efficiently

Add three addends efficiently by finding two addends that total 10

Add two numbers that bridge through 10

Add and subtract two numbers that bridge through 10

Compare the number of objects in two sets or difference between two measures.

Calculate the difference

Calculate the difference in different contexts

Explain what the difference is between consecutive numbers

Calculate the difference when information is presented in a pictogram

Calculate the difference when information is presented in a bar chart

Use knowledge of calculating within 20 to solve problems

In this unit pupils will add 3 addends. They will use a strategy such as finding 2 addends to total 10 or 2 numbers to bridge though 10.  In the future unit pupils will add and subtract 1s and 10s from 2 digit numbers. They will use number facts to add/subtract a single-digit number to/from a 2-digit number .They will use a part-part-whole model to represent addition and subtraction.

In the prior unit pupils revisited addition and subtraction within ten. They consolidated addition and subtraction strategies. In this unit pupils will add 3 addends. They will use a strategy such as finding 2 addends to total 10 or 2 numbers to bridge though 10.

In this unit pupils will add 3 addends. They will use a strategy such as finding 2 addends to total 10 or 2 numbers to bridge though 10.

Calculating within 20

Class 2 record their favourite primary colour as a pictogram. How many children chose yellow as their favourite colour?

Class 2 record their favourite primary colour as a pictogram. How many more children voted for yellow than red?

Class 2 record their favourite primary colour as a pictogram. How many children in the class voted for their favourite colour altogether?

Class 2 record their favourite pet as a bar chart. How many children chose fish as their favourite pet?

Class 2 record their favourite pet as a bar chart. 
How many children chose either a cat or a dog as their favourite pet?

Class 2 record their favourite pet as a bar chart. 
What is the difference between the number of children that chose a fish and the number of children that chose a dog?

Class 2 make a pictogram to show the number of minibeasts they found in their garden. How many worms did Class 2 find?

How many woodlice, ladybirds and snails did Class 2 find altogether?

How many more ants did Class 2 find than worms?

Izzy, Sam, Alex and Lucas play a game. They make a bar chart of points scored. 
How many points did Lucas score?

Izzy, Sam, Alex and Lucas play a game. They make a bar chart of points scored. 
How many fewer points did Alex score than Lucas?

Laura, Sofia, Jun and Andeep play a game. They record their points in a table and plan to draw a bar chart.  Using the table below, how many more points did Andeep score than Laura?

Use knowledge of calculating within 20 to solve problems involving statistics

Lesson outcome