- Salamander Facts For Kids 9-12
- Sally Ride: A Photobiography of America's Pioneering Woman in Space
- Salvaguardia del pianeta e nuovi stili di vita
- Sandy
- Sanotes, sanitos
- Saturn Could Sail
- Save the People!
- Saving Culture from Disaster
- Saving Earth
- Scene of the Crime
- Science amusante
- Science Comics: Bats
- Science Comics: Cars
- Science Comics: Cats
- Science Comics: Coral Reefs
- Science Comics: Crows
- Science Comics: Dinosaurs
- Science Comics: Dogs
- Science Comics: Flying Machines
- Science Comics: Plagues
- Science Comics: Polar Bears
- Science Comics: Robots and Drones
- Science Comics: Rockets
- Science Comics: Rocks and Minerals
- Science Comics: Sharks
- Science Comics: Skyscrapers
- Science Comics: Solar System
- Science Comics: Spiders
- Science Comics: The Brain
- Science Comics: The Digestive System
- Science Comics: Trees
- Science Comics: Volcanoes
- Science Comics: Whales
- Science Detectives
- Science Experiments and Amusements for Children
- Science Experiments for Kids
- Science in Motion
- Science is Magic
- Science Lab
- Science Magic Tricks
- Science Research Experiments for Young People
- Science Stunts
- Science Superstars
- Science Year by Year
- Science You Can Eat
- Scientific Investigation
- Scienze
- Scraps to Snacks: A Cookbook for Kids by Kids to Reduce, Reuse, and Re-Eat
- Scratchmanía
- Se suponía que esto era el futuro
- Sea Monsters
- Sea Turtle Facts For Kids 9-12
- Second Grade Science
- Second Grade Science Quizzes
- Secrets of Mental Math - Advanced Calculation and Memorization All in your Head
- Seeing the Sky
- Seen: Rachel Carson
- Senses
- Senses, Nervous & Respiratory Systems
- Seven Wonders of the Milky Way
- Seven Wonders of the Solar System
- Shadows
- Shark Facts For Kids 9-12
- Shark Life
- Sharks & Underwater Monsters
- Sharks and Other Deadly Ocean Creatures
- Sharks and Other Fish
- Si saltamos a la vez
- Simon the Science Cat
- Simple Machines
- Simple Science Projects
- Six Easy Pieces
- Sixth Grade Homeschooling
- Sixth Grade Science
- Sixth Grade Science Experiments
- Sixth Grade Science Quizzes
- Slime!
- Smithsonian Dinosaurs and Other Amazing Creatures from Deep Time