A graph that uses bars of different heights to represent information.

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

To partition one part from another (the subtrahend from the difference), or to decrease an amount by taking an amount away.

Calculate the difference when information is presented in a bar chart

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

Use knowledge of calculating within 20 to solve problems

Use knowledge of calculating within 20 to solve problems involving statistics

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

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

How many more points did Sam score than Izzy?

Which two children had a difference of 4 points?

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, state how many points Andeep scored.

Look at the table. How many fewer points did Laura score than Jun?

Look at the table. Which two children had a difference of 2 points?

What is the height of Andeep’s sunflower?
The sunflower is {{ }} cm tall.

How long is the snake? The snake is {{ }} cm long.

What number is missing from this number line?

Calculate the difference when information is presented in a bar chart

Lesson outcome