Each day there is a new word math problem presented and three challenge levels: Wee Ones (preK), Little Ones (K-2nd) and Big Kids (2nd +). Obviously those grades are approximate and you can choose whichever problem(s) would be a good fit for your child.
They also offer a free PDF calendar that you can add your own stickers too, to show which days your child completed the problem.
I think Blue might really enjoy this and the word problems are on fun topics and don't feel too "school-y".
