- Saber-Toothed Cat
- Saber-Toothed Cat (Enhanced Edition)
- Sabertooths and the Ice Age
- Safari Stanley's Reptile Discovery
- Safari, So Good! All About African Wildlife
- Salamander, Frog, and Polliwog
- Salamander, Frog, and Polliwog (Enhanced Edition)
- Saltarin y las 4 palabras clave para una familia unida
- Salvem els oceans
- Sanitation Workers Then and Now
- Sarah and the Big Wave
- Saturn Could Sail
- Savannas and Grasslands
- Saving American Beach
- Saving Culture from Disaster: Read-along ebook
- Saving Migratory Birds
- Saving the Arctic
- Scales
- Scales (Enhanced Edition)
- Scary Plants!
- Schrödinger's Cat
- Sci-fi Shapes
- Science Adventure Stories: Agents of N.R.G.
- Science Adventure Stories: Escape from Atomic Island
- Science Adventure Stories: Space Quest
- Science Adventure Stories: The Body Odyssey
- Science Around the House
- Science Around the World
- Science Art and Drawing Games for Kids
- Science Arts
- Science Educator and Advocate Bill Nye
- Science for Kids: Philae
- Science Geek Christy and her Eco-Logbook
- Science in a Jar
- Science Is Fun (Common Core Edition) : 2nd Grade Activity Book Series
- Science Notes
- Science Safety Rules
- Science Study Guide for Preparing For My First Cockatiel
- Science Stunts
- Science Tools
- Scientists Use Tools
- Scientists Who Dared to Be Different
- Sea Creatures: Solving Equations and Inequalities
- Sea Lions in the Parking Lot
- Sea Monsters
- Sea Slime: It’s Eeuwy, Gooey and Under the Sea
- Seagulls Soar
- Seal on the Loose
- Seal on the Loose (Readaloud)
- Seashells
- Seashore
- Seaside Treasures
- Seasons
- Seasons (Enhanced Edition)
- Seasons and the Sun
- Seasons Of The Tundra Biome
- Sebastian in der Mühle
- Sebastians dyrebibliotek: elefant
- Sebastians dyrebibliotek: Giraf
- Sebastians dyrebibliotek: Isbjørn
- Sebastians dyrebibliotek: Løve
- Sebastians dyrebibliotek: næsehorn
- Sebastians dyrebibliotek: Panda
- Sebastians dyrebibliotek: Tiger
- Sebastians store quiz om dyr
- Sebastians store quiz om dyr 2
- Secos y contentos
- Secrets of the Garden
- Secrets of the Seasons: Orbiting the Sun in Our Backyard
- Seeds
- Seeds Move!
- Seeds We Eat
- Seeing More Stars
- Seikkailuja saloilla ja vesillä
- Seeing More Stars
- Seikkailuja saloilla ja vesillä
- Self-Pollination
- Self-Pollination (Enhanced Edition)
- Sending Messages with Light and Sound
- Sending Messages with Light and Sound (Enhanced Edition)
- Sensational Butterflies
- Sensing Light and Sound
- Sensing Light and Sound (Enhanced Edition)
- Sensory Play for Toddlers and Preschoolers
- Sequoia
- Seres vivos y no vivos: Un libro de comparación y contraste
- Seven Wonders of the Milky Way
- Seven Wonders of the Solar System
- Seymour Simons Animal ABCs
- Seymour Simons Colors in Nature
- Shape Me a Rhyme
- Shapes in Nature
- Shaping Our Environment
- Sharks
- Sharks and Dolphins: A Compare and Contrast Book
- Sharks Can't Smile!
- Sharks: Chompers of the Sea
- Shells
- Shells (Enhanced Edition)
- Shining the Light
- Shipwreck Detectives
- Shipwreck Reefs
- Shopping at the Farm Shop
- Showdown: Animal Defenses
- Showdown: The Fight for Space
- Si una momia pudiera hablar…
- Siberian Tigers
- Siberian Tigers (Enhanced Edition)
- Siempre crece: La fruta
- Siempre crece: La piel