- $10.05Leaf-Cutting Ants by Helen FrostBetter World Books
- $6.27Birds by Helen FrostBetter World Books
- $8.69Triceratops/Triceratops by Helen FrostBetter World Books
- $12.05Arctic Hares by Helen FrostBetter World Books
- $8.41Jaguars by Helen FrostBetter World Books
- $9.89Fog by Helen FrostBetter World Books
- $6.72Bird Eggs by Helen FrostBetter World Books
- $5.96Tree Frogs by Helen FrostBetter World Books
- $3.98Independence Day by Helen FrostBetter World Books
- $3.98Presidents' Day by Helen FrostBetter World Books
- $6.96The Fruit Group by Helen FrostBetter World Books
- $3.98Dogs by Helen FrostBetter World Books
- $9.82Moths by Helen FrostBetter World Books
- $11.51Monarch Butterflies by Helen FrostBetter World Books
- $8.81Hearing by Helen FrostBetter World Books
- $7.04Butterfly Eggs by Helen FrostBetter World Books
- $9.52Bird Families by Helen FrostBetter World Books
- $8.34Wind by Helen FrostBetter World Books
- $5.14Applesauce Weather by Helen FrostBetter World Books
- $3.98Blue Daisy by Helen FrostBetter World Books
- $5.14Keeping Water Clean by Helen FrostBetter World Books
- $5.64Drinking Water by Helen FrostBetter World Books
- $3.98Bird Nests by Helen FrostBetter World Books
- $9.89Water As a Solid by Helen FrostBetter World Books
- $9.11Water as a Gas by Helen FrostBetter World Books
- $9.08El Agua Como Sólido by Helen FrostBetter World Books
- $5.56Water as a Liquid by Helen FrostBetter World Books
- $8.96El Agua Como un Liquido by Helen FrostBetter World Books
- $7.67What Are Wheels and Axles? by Helen FrostBetter World Books
- $3.98Tigre Dientes de Sable/Sabertooth Cat by Helen FrostBetter World Books