Since I've been teaching math for over 18 years, I collected a library of:
Here are some videos of me reading a few of the books with some kids:
Math Books for Kids Readings Videos:
One Grain of Rice by Demi with Mae (age 9 in 4th grade) & Ruthie (age 7 in 2nd grade):
Spaghetti & Meatballs for All! by Marilyn Burns with August (age 7 in 2nd grade) & Julian (age 4 in preschool):
The Greedy Triangle by Marilyn Burns with Elijah (age 5 in preschool).
Amanda Bean's Amazing Dreams by Cindy Neuschwander with Arya (age 3):