Reception

# Addition and subtraction within 20

## Lessons (10)

• In this lesson, we will practise adding 2 quantities together by counting them all.
1 Slide deck
1 Worksheet
1 Video
• In this lesson, we will add 2 quantities together by adding on. We will remember the initial amount and counting on from that to add on the next amount.
1 Slide deck
1 Worksheet
1 Video
• In this lesson, we will start learning about subtraction. We will look at the part-whole model and think about subtraction as partitioning, taking away a part of the whole and finding out how many are left.
1 Video
• In this lesson, we will continue learning about subtraction. We will think about subtraction as taking away and we will make up subtraction stories.
1 Video
• In this lesson, we will revise more and fewer by comparing groups of objects and deciding which group has more and which group has fewer.
1 Video
• In this lesson, we will compare quantities using the words 'more' and 'fewer.' We will solve a problem listening to clues to work out how many passengers are in each carriage of the train.
1 Slide deck
1 Worksheet
1 Video
• In this lesson, we will learn how to double with concrete objects and pictures. Then we will use a part-whole model to show doubling.
1 Slide deck
1 Video
• In this lesson, we will explore halving.
1 Slide deck
1 Video
• In this lesson, we will estimate the amount of items in a pot and count to check how many are actually there. We will see how close our estimation is to the actual amount.
1 Slide deck
1 Video
• In this lesson, we will recap addition and subtraction.
1 Video