8.72 avg 6 episodes 8.7 → 8.8
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | How Does Night Happen? | 8.7 | 42 |
| 2 | How Do Airplanes Fly? | 8.6 | 38 |
| 3 | Why Do I Have to Brush My Teeth? | 8.4 | 34 |
| 4 | Why Is the Sky Blue? | 8.8 | 34 |
| 5 | Where Do French Fries Come From? | 9.0 | 38 |
| 6 | Where Does Rain Come From? | 8.8 | 32 |
7.85 avg 8 episodes 7.4 → 8.6 26 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | How Do Computers Work? | 7.4 | 12 |
| 2 | Why Can't I Eat Dessert All the Time? | 8.2 | 22 |
| 3 | How Many Types of Animals Are There? | 7.0 | 10 |
| 4 | How Do Ears Hear? | 7.7 | 11 |
| 5 | How Do Volcanoes Work? | 7.5 | 10 |
| 6 | What Is Electricity? | 8.4 | 15 |
| 7 | How Do Flowers Grow? | 8.0 | 10 |
| 8 | How Do People Catch a Cold? | 8.6 | 18 |
8.23 avg 8 episodes 8.8 → 8.3 28 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | How Do You Make Music? | 8.8 | 27 |
| 2 | Where Do Planets Come From? | 8.3 | 22 |
| 3 | Why Do People Look Different? | 8.0 | 12 |
| 4 | Why Do We Have to Recycle? | 7.6 | 15 |
| 5 | How Do Cell Phones Work? | 8.2 | 12 |
| 6 | What Happens When You Flush the Toilet? | 8.6 | 16 |
| 7 | Where Does Chocolate Come From? | 8.0 | 15 |
| 8 | How Do Eyes See? | 8.3 | 14 |
