- $10.05Leaf-Cutting Ants by Helen FrostBetter World Books
- $7.58The Fruit Group by Helen FrostBetter World Books
- $9.66Birds by Helen FrostBetter World Books
- $3.98Independence Day by Helen FrostBetter World Books
- $9.37Jaguars by Helen FrostBetter World Books
- $8.66Triceratops/Triceratops by Helen FrostBetter World Books
- $8.79Hearing by Helen FrostBetter World Books
- $3.98Dogs by Helen FrostBetter World Books
- $9.89Fog by Helen FrostBetter World Books
- $9.52Bird Families by Helen FrostBetter World Books
- $3.98Blue Daisy by Helen FrostBetter World Books
- $6.51Bird Eggs by Helen FrostBetter World Books
- $9.77Moths by Helen FrostBetter World Books
- $5.96Tree Frogs by Helen FrostBetter World Books
- $3.98Presidents' Day by Helen FrostBetter World Books
- $9.00Drinking Water by Helen FrostBetter World Books
- $11.03Monarch Butterflies by Helen FrostBetter World Books
- $12.05Arctic Hares by Helen FrostBetter World Books
- $5.14Applesauce Weather by Helen FrostBetter World Books
- $5.73The Braid by Helen FrostBetter World Books
- $7.49Wind by Helen FrostBetter World Books
- $3.98Bird Nests by Helen FrostBetter World Books
- $7.25Butterfly Eggs by Helen FrostBetter World Books
- $5.14Keeping Water Clean by Helen FrostBetter World Books
- $3.98Water as a Liquid by Helen FrostBetter World Books
- $7.72Water As a Solid by Helen FrostBetter World Books
- $16.52El Agua Como Sólido by Helen FrostBetter World Books
- $9.11Water as a Gas by Helen FrostBetter World Books
- $14.58El 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