Learning intention
Students will learn how to:
add to 10 by combining 2 sets of objects and counting all of them.
Success criteria
I will know I have been successful if I can:
find the total of 2 sets by counting.
Prerequisites
- Numbers to 10
- Counting forwards to 10
- Addition within 5
Language
Reinforce the use of addition language: combines with, join, altogether, makes
Misconceptions
There is only 1 way to make a particular total.
Before the video
- Practice counting up to 10 objects using one-to-one correspondence.
During the video
First viewing:
Watch the video without stopping or pausing. Then, ask the children to explain what happened in the video. Begin to draw out key vocabulary or possible misconceptions.
Second viewing:
| Pause point | Key learning | Action/discussion |
|---|---|---|
| 1:40 | Conservation of quantity | The tower has been turned on its side. Will it have the same number of blocks now? |
| 4:26 | Number pairs | How many different ways can we make a tower of 9? |
After the video
Mathletics colored block cards #1:
- Students count the number of blocks in the first colored section and record this number.
- Students count the number of blocks in the second colored section and record this number.
- Students count the total number of blocks and record the whole number sentence using informal language.
Mathletics colored block cards #2:
- Students take one block card each.
- Ask students to find others with the same total of blocks on their card.
- Students share the number sentence showing on their card using informal language, eg ‘1 yellow block and 5 blue blocks make 6 blocks altogether’.
Mathletics worksheets:
- Colored blocks addition worksheet
Towers of 9 problem solving challenge:
- Students create as many towers of 9 cubes as they can by combining different numbers.
- Students record their number sentences.