Challenges

Problems worth getting stuck on

A small shelf of curious problems, gathered for every family here. Pick one, sit down together, and if it bites back, June can work through it with your child.

1 of 21 challenges ·

Grade 6

Percent up, percent down

Grow a number by 60% and it does not take 60% to bring it home -- the way back is a different rate. For a child learning to ask: a percent of what?

3 problems