Use familiar amounts from the lesson pages. Explain rather than only giving a calculation.
1. Twenty counters are first in 4 equal groups and then in 10 equal groups. Compare the group sizes. Explain why more groups do not mean more counters in each group here.
2. For 2 m shared among 3 projects, a share is 1/3 of the total ribbon and 2/3 of one meter. Can both statements be correct? Explain or draw their different wholes.