Why objects suit their uses means practising the idea at the table with counters or paper models and one clear check. We will demo once, then your child tries.

Materials: Counters or paper models for the idea; Pencil for recording. Adult models one concrete example of the idea. Child completes three concrete examples and says a reason each time. Done: three correct examples with a spoken reason each. Stop after the fresh check; keep optional challenge for another day.