Series
| Series Name | Release Date | Product Count |
|---|---|---|
| Math It! | 2016-08-01 | 7 |
| Meals Around the World | 2016-08-01 | 10 |
| Meet the Community Helpers! | 2022-01-01 | 8 |
| Meet the Community Helpers! | 2021-08-01 | 6 |
| Meet the Dinosaurs!: When Reptiles Ruled | 2022-01-01 | 6 |
| Meet the Dinosaurs!: When the Reptiles Ruled | 2022-01-01 | 1 |
| Meet the Horses | 2025-08-01 | 0 |
| Mega Machines | 2022-08-01 | 15 |
| Mighty Machines | 2009-08-01 | 34 |
| Mighty Machines in Action | 2018-01-01 | 23 |
| Military Aircraft | 2024-01-01 | 7 |
| Military Careers | 2024-08-01 | 7 |
| Military Machines | 2011-01-01 | 35 |
| Military Missions | 2016-08-01 | 9 |
| Military Science | 2022-01-01 | 7 |
| Military Vehicles | 2014-01-01 | 23 |
| Mindful Me | 2019-10-15 | 7 |
| Mindful Mentality | 2020-08-01 | 7 |
| Minding Emotions | 2019-10-15 | 6 |
| Míralos crecer (Watch It Grow) | 2019-01-01 | 9 |
| Mis primeros libros de animales (My First Animal Books) | 2023-08-01 | 17 |
| Mis sentidos | 2023-01-01 | 5 |
| Mission: Special Ops | 2021-01-01 | 7 |
| Money Matters | 2015-08-01 | 7 |