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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.

3 of 21 challenges ·

Grade 2

Count the shapes hiding inside

A line, a triangle, a rectangle -- each picture holds more than it first shows. The trick is the same every time: count the small pieces, then the big ones they make.

3 problems

Grade 3

Six ways to sit in a row

Rebuild the missing number, seat three friends in every possible order, and spot the one story that is not really four fours. For a child learning to list every case and read past the numbers.

3 problems

Every edge counts

A wizard's stars hide edges in their valleys, and a blank inside a sum turns addition around. For a child practicing careful counting and working backwards.

2 problems