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

Starter quiz

Look at the part-part-whole model. What is the missing part?

'8' ✓
Use number pairs to 10 to solve the equations.

10 − 1 =

⇔

9 ✓

10 − 5 =

⇔

5 ✓

10 − 3 =

⇔

7 ✓

10 − 6 =

⇔

4 ✓

10 − 8 =

⇔

2 ✓
This ten frame represents a story. First, there were 4 books on the shelf. Then, 2 more books were added to the shelf. Now, there are ______ books on the shelf.

'6' ✓
Which equation represents this story? First, there were 7 stickers in my book. Then, I used 6 of the stickers. Now, there is 1 sticker left in my book.

7 - 1 = 6

6 - 1 = 7

7 - 6 = 1 ✓
This image represents parts and a whole. Which show parts and which shows the whole?

2 counters

⇔

is a part ✓

5 counters

⇔

is a part ✓

10 counters

⇔

is the whole ✓

3 counters

⇔

is a part ✓
The ten frame shows a total of 9 counters. What three addends have been added together?

5

4 ✓

3 ✓

2 ✓

1

Exit quiz

Order the sentences to tell the story correctly.

1

⇔

First, there were 5 children on the bus.

2

⇔

Then, 2 more children got on the bus.

3

⇔

Then, 3 more children got on the bus.

4

⇔

Now, there are 10 children on the bus.
Use the ten frames to order the sentences of the story correctly.

1

⇔

First, there were 2 birds in a tree.

2

⇔

Then, 4 more birds flew to the tree.

3

⇔

Then, 3 more birds flew to the tree.

4

⇔

Now, there are 9 birds in the tree.
Look at the part-part-whole model. Which sentences are true?

8 is the sum of the addends. ✓

There are four addends.

The sum of the addends is the whole. ✓

3, 1 and 4 are addends. ✓
This image shows a 'First, then, then, now' story. Which equation represents this image?

3 + 3 + 4 = 10

3 + 4 + 4 = 10 ✓

3 + 4 + 3 = 7
Which number line correctly shows this equation? 3 + 5 + 1 =
Which equation correctly represents this number line?

2 + 3 + 4 = 9 ✓

2 + 5 + 4 = 9

Worksheet

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Presentation

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Lesson Details

Key learning points

A 'First … then … then … now' story can represent an addition with three addends.
The addition of three addends can be represented as three different objects on a ten frame.
The addition of three addends can be represented as three steps on a number line.
The addition of three addends can be represented as an equation.

Common misconception

Children may not be able to accurately represent the story as an equation.

Ensure that children are able to say what each number represents in a given equation using the story as a scaffold before asking them to write their own equations to represent ‘First, then, then, now’ stories.

Keywords

Addends - Any of the numbers that are added together.
First - Before anything else.
Then - After something in time.
Now - At the present time.