- I am the Danger
- I Can't Believe It!
- I fabbricanti di uomini
- I Love Rainforests
- I Spy Island
- I Want A Bearded Dragon (Best Pets For Kids Book 2)
- I Want A Leopard Gecko (Best Pets For Kids Book 1)
- I Want A Puppy (Best Pets For Kids Book 4)
- I, Galileo
- Ice Ages
- Illustrated Science for Boys and Girls
- Im Wald
- Imaginary Borders
- Imagine With Me
- In den Fängen des Seemonsters
- In Search Of Destiny
- In the Shadow of the Moon
- In the Shadow of the Volcano
- Incendio en la sabana y otros cuentos
- Ind til kernen - eventyret om Niels Bohr
- Individuals and Societies for the IB MYP 4&5: by Concept
- Innovation Nation
- Inquinamento Ecologia e Società
- Ins Nordlicht blicken
- Insects
- Inside a Plant
- Inside Ecosystems and Biomes
- Inside of a Dog -- Young Readers Edition
- Inside the Cabinet of Curiosities
- Inside the Human Body
- Internal Assessment for Biology for the IB Diploma
- Internal Assessment for Chemistry for the IB Diploma
- Internal Assessment Physics for the IB Diploma: Skills for Success
- Into a Black Hole
- Into the Blizzard (Young Readers Edition)
- Introduction to Science
- Inventions
- Inventor Lab
- Investigating Landforms
- Investigating Storms
- Is the Seawater Always Blue?
- Is There Life Beyond Earth?
- Isaac Newton
- It Can't Be True! Animals!
- It Can't Be True! Poo!
- It's Easy Being Green
- It's Raining Fish and Spiders
- It's Your World