- What's the difference?, an endangered animal subtraction story
- Out of school and into nature, the Anna Comstock story
- What's new at the zoo?, an animal adding adventure
- Multiply on the fly
- Daring dozen, the twelve who walked on the moon, Suzanne Slade ; illustrated by Alan Marks
- Birds, winged and feathered animals, by Suzanne Slade ; illustrated by Kristin Kest. --
- Out of school and into nature, the Anna Comstock story, written by Suzanne Slade & illustrated by Jessica Lanan
- Behold the octopus!, written by Suzanne Slade ; illustrated by Thomas Gonzales
- ¿Qué es nuevo en el zoológico? Una aventura de suma con los animales, Suzanne Slade
- Fish, finned and gilled animals, by Suzanne Slade ; illustrated by Kristin Kest. --
- The great divide, by Suzanne Slade ; illustrated by Erin E. Hunter. --
- The new kid welcome ;, Welcome the new kid, by Suzanne Slade ; illustrated by Nicole Miles
- Behold the Hummingbird, illustrated by Gonzalez, Thomas
- The universe and you, written by Suzanne Slade ; illustrated by Stephanie Fizer Coleman
- Mars is, stark slopes, silvery snow, and startling surprises, Suzanne Slade
- Daring dozen, the twelve who walked on the moon
- House That George Built, The, Suzanne Slade
- A look at Saturn, Suzanne Slade. --
- Countdown, 2979 days to the moon, written by Suzanne Slade ; illustrated by Thomas Gonzalez
- A look at Neptune, Suzanne Slade. --
- A look at Uranus, Suzanne Slade. --
- A look at Jupiter, Suzanne Slade. --
- From tadpole to frog, following the life cycle, by Suzanne Slade ; illustrated by Jeff Yesh. --
- From seed to pine tree, following the life cycle, by Suzanne Slade ; illustrated by Jeff Yesh. --
- The Great Divide, Suzanne Slade