I'm bragging on my son setting up addition problems for his dad this morning. On a napkin, he wrote out double digit problems and then solved them. For a "super challenge", he had dad write the number one billion out and wanted to learn to add it to one thousand. (He's still not understanding that big numbers don't always mean difficult to add numbers!)

I wanted to keep that napkin, but it got smeared up with maple syrup. *sigh*