M2.4.4 For the adult
Fractions of a group
I have 12 beans. How many beans is 1/3 of them?
What this chapter teaches
A fraction of a group works in two steps. The bottom number makes that many equal groups, and the top number says how many groups to take. Two thirds of 12 is 2 groups of 4.
Three questions to ask
There is no one right wording. Listen for the idea.
- How would you find one third of 12 beans?
- What do you do with the top number when you find two thirds of a group?
- If Mei gives three quarters of 12 beans away, how many does she keep, and how do you know?
After the chapter, the learner can
- Find a fraction of a group of things
- Make equal groups, then take some of them
- Explain why 2/3 of 12 is 8
What they copy into their notebook
The bottom number says how many equal groups to make. The top number says how many groups to take. 2/3 of 12 is 8.