[sevensor]

My kids (in preschool) _love_ Bedtime Math (the book) and often request it instead of bedtime stories. It's hard to tell if it's having any pedogogical effect --- my oldest is starting to be able to add, sometimes, if both numbers are less than or equal to five. But maybe that would have happened anyhow?

[dgrant]

It definitely helps. We were at that stage, where all my daughter could do was questions that involved summing numbers that added up to 5. She would do them on her fingers. Now she can do those in her head and also memorized what 1, 2, 3, 4, 5 looks like on fingers, and can now recognize 6, 7, and 9, 10 on fingers. Can't do 8 yet... Keep at it!