Bullfrog Books

In Uranus, early readers learn about the planet’s unique characteristics and composition. Vibrant, full-color photos and carefully leveled text will engage early readers as they discover the… More →

In Mars, early readers learn about the planet’s unique characteristics and composition. Vibrant, full-color photos and carefully leveled text will engage early readers as they discover the… More →

In Mercury, early readers learn about the planet’s unique characteristics and composition. Vibrant, full-color photos and carefully leveled text will engage early readers as they discover the More →

In Sun, early readers learn about sun’s unique characteristics and composition. Vibrant, full-color photos and carefully leveled text will engage early readers as they discover the solar… More →

In Jupiter, early readers learn about the planet’s unique characteristics and composition. Vibrant, full-color photos and carefully leveled text will engage early readers as they discover the More →

In Neptune, early readers learn about the planet’s unique characteristics and composition. Vibrant, full-color photos and carefully leveled text will engage early readers as they discover the More →

In Earth, early readers learn about the planet’s unique characteristics and composition. Vibrant, full-color photos and carefully leveled text will engage early readers as they discover the… More →

In Moon, early readers learn about the moon’s unique characteristics and composition. Vibrant, full-color photos and carefully leveled text will engage early readers as they discover the… More →

In Pluto and the Dwarf Planets, early readers learn about Pluto and the dwarf planets’ unique characteristics and compositions. Vibrant, full-color photos and carefully leveled text will… More →

In Venus, early readers learn about the planet’s unique characteristics and composition. Vibrant, full-color photos and carefully leveled text will engage early readers as they discover the… More →

In Saturn, early readers learn about planet’s unique characteristics and composition. Vibrant, full-color photos and carefully leveled text will engage early readers as they discover the… More →

Marco has freckles. Lala talks with her hands. Tina has two dads. What makes a person different is one of the things that makes him or her special. Young readers can learn more about how our… More →