Some of my favorite books to read to the kids when they were young were the Franklin books by Paulette Bourgeois and Brenda Clark. Sometimes the books began, "Franklin could count by twos and tie his shoes..."
Molly has been enjoying Franklin books for some time now and she can count by twos and can usually almost sometimes tie her shoes. Counting by fives, however, has been another story. during his lunch hour my Man was drawn into Molly's challenge and the math lesson that followed was too fun to watch...
"Molly could jump and jive and count by fives..."
When I was growing up, math was never THAT much fun!