- Was Kinder wissen wollen – Wie kommt der Fisch in die Stäbchen?
- Was Kinder wissen wollen – Wo ist im Weltall oben und unten?
- Washer and Dryer's Big Job
- Water Parks
- We Dare You!
- We Love Electric Cars
- We Love Pickup Trucks
- We Love Race Cars
- We Love Sports Cars
- We Use Tools All Day
- Weather
- Weather Robots
- Weather Robots (Enhanced Edition)
- Web Security for Kids
- Weird & Wacky Inventions
- What Are Programs and Apps?
- What Are Programs and Apps? (Enhanced Edition)
- What Do Pliers Do?
- What Do Pliers Do? (Enhanced Edition)
- What Does a Hammer Do?
- What Does a Hammer Do? (Enhanced Edition)
- What Does a Level Do?
- What Does a Level Do? (Enhanced Edition)
- What Does a Saw Do?
- What Does a Saw Do? (Enhanced Edition)
- What Does a Screwdriver Do?
- What Does a Screwdriver Do? (Enhanced Edition)
- What Does a Wrench Do?
- What Does a Wrench Do? (Enhanced Edition)
- What Is Computer Coding?
- What Is Computer Coding? (Enhanced Edition)
- What Is the Panama Canal?
- What Is Up In Space?
- What Makes a Building Strong?
- WHAT Makes a Skunk Stink?
- WHAT Makes a Skunk Stink? Read-Along
- What Toys Can Do
- What Was the Hindenburg?
- What's Inside My Computer?
- What's Inside My Computer? (Enhanced Edition)
- What’s up with Time?
- When Sparks Fly
- WHERE Do Dinosaurs Get Their Names?
- Where Is Area 51?
- Where is the baby. あかちゃんは どこだ
- Where Is the Gas?
- Where Things Come From
- WHO Invented Bubble Gum?
- WHO Invented Bubble Gum? Read-Along
- Who Says Women Can't Be Computer Programmers?
- Who Was Sally Ride?
- Why Do Computers Know So Much?
- Why Do Tractors Have Such Big Tires?
- WHY Does The Moon Change Shape?
- Why Don't Astronauts Burp?
- Wings
- Winston @ Work: Concrete
- Wired
- Women Who Launched the Computer Age
- Writing Computer Code