Series
| Series Name | Release Date | Product Count |
|---|---|---|
| War Histories | 2023-08-01 | 7 |
| Watch Animals Grow | 2009-01-01 | 11 |
| Watching the Seasons | 2012-08-01 | 5 |
| Watch It Grow | 2019-01-01 | 9 |
| Water Babies | 2012-08-01 | 9 |
| Way to Grow! Gardening | 2015-08-01 | 7 |
| Weather | 2006-08-01 | 6 |
| Weather Forecast | 2022-08-01 | 7 |
| Weather Makes Them Sleep | 2024-01-01 | 1 |
| Weather Report | 2018-08-01 | 5 |
| Weather Watch | 2018-07-15 | 7 |
| Weather Watch | 2016-08-01 | 7 |
| Weather Watchers | 2020-01-07 | 6 |
| Weather Wise | 2014-07-01 | 8 |
| Weird But Cute | 2015-12-15 | 9 |
| Weirder and Cuter | 2017-07-19 | 7 |
| Weird, True Facts | 2017-08-01 | 8 |
| We Work! Animals with Jobs | 2013-08-01 | 7 |
| What Animal Am I? | 2022-08-01 | 9 |
| What Happens in Fall? | 2013-08-01 | 7 |
| What Happens in Spring? | 2015-08-01 | 6 |
| What Happens in Winter? | 2016-08-01 | 5 |
| What Makes a Community? | 2020-08-01 | 14 |
| What on Earth? Climate Change Explained | 2022-01-01 | 7 |