8.68 avg 6 episodes 8.7 → 8.7
| # | 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? | 8.3 | 35 |
| 4 | Why Is the Sky Blue? | 8.8 | 36 |
| 5 | Where Do French Fries Come From? | 9.0 | 39 |
| 6 | Where Does Rain Come From? | 8.7 | 33 |
7.66 avg 8 episodes 7.2 → 8.5 26 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | How Do Computers Work? | 7.2 | 13 |
| 2 | Why Can't I Eat Dessert All the Time? | 8.1 | 23 |
| 3 | How Many Types of Animals Are There? | 6.8 | 11 |
| 4 | How Do Ears Hear? | 7.5 | 12 |
| 5 | How Do Volcanoes Work? | 7.3 | 11 |
| 6 | What Is Electricity? | 8.1 | 17 |
| 7 | How Do Flowers Grow? | 7.8 | 11 |
| 8 | How Do People Catch a Cold? | 8.5 | 19 |
8.11 avg 8 episodes 8.8 → 8.2 28 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | How Do You Make Music? | 8.8 | 28 |
| 2 | Where Do Planets Come From? | 8.2 | 23 |
| 3 | Why Do People Look Different? | 7.8 | 13 |
| 4 | Why Do We Have to Recycle? | 7.5 | 16 |
| 5 | How Do Cell Phones Work? | 8.0 | 13 |
| 6 | What Happens When You Flush the Toilet? | 8.5 | 17 |
| 7 | Where Does Chocolate Come From? | 7.9 | 17 |
| 8 | How Do Eyes See? | 8.2 | 15 |
