Addition as combining or putting together two groups
Understand addition as combining or putting together two groups to find the total
What a learner can do afterwards
- Model 'putting together' with physical objects and say the total
- Act out an 'add to' situation (e.g. 3 children arrive, then 2 more join)
- Explain that addition means finding how many altogether
1 · Read
Addition means joining two groups. You put them together and count all of them. That number is the total, or how many altogether.
Leo has 3 apples. A friend gives him 2 more apples. Now Leo has 5 apples altogether.
When two groups join, ask how many altogether. Count every one from both groups. We can write it with a plus sign: 3 + 2 = 5 means 3 and 2 more make 5.
Putting two groups together and counting them all is addition.
Readings 'Putting two groups together', 'Two hands, one total', 'When more join in' and 'One more' are original to this dataset. All 9 extra questions are original to this dataset.
2 · Watch
Take it off screen
Where it sits
Learn first
This opens up
Where this leads
Jobs that lean on this skill. Follow one to see everything it is built on.
17 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.