National Geographic Kids Books in Order
4 books by David A. Aguilar. Reading level: Grades 1.7–6.5. Middle Grades (Ages 9–12).
Series books grow with readers — but that's also the trap. Most series start at one reading level and one content intensity and drift upward over the course of the run. National Geographic Kids (4 books by David A. Aguilar) lands at reading level Grades 1.7–6.5, with average content intensity 1/5. Intensity stays consistent across the series — a kid who can handle the first book can generally handle the rest.
The reading-order table below lists every book with per-volume reading level and intensity badges so you can spot any escalation before it catches your reader off guard. For a deeper dive into how we score text difficulty vs. emotional weight separately — and why series readers especially benefit from that split — see our methodology page.
Content Intensity Across the Series
ConsistentContent stays at a steady intensity level throughout the series.
National Geographic Kids Reading Order
| # | Title | Reading Level | Content |
|---|---|---|---|
| 1 | Alien Worlds David A. Aguilar | Level 6-7 | Gentle |
| 2 | Little Kids First Big Book of Bugs Catherine D. Hughes | Level 4-5 | Gentle |
| 3 | Ocean Creatures National Geographic Kids Staff | Level 1-2 | Gentle |
| 4 | Saving Yasha The Incredible True Tale Of An Adopted Moon Bear Lia Kvatum | Level 3-4 | Gentle |
All National Geographic Kids Books
Alien Worlds
David A. Aguilar
Alien Worlds
David A. Aguilar
Little Kids First Big Book of Bugs
Catherine D. Hughes
Little Kids First Big Book of Bugs
Catherine D. Hughes
Ocean Creatures
National Geographic Kids Staff
Ocean Creatures
National Geographic Kids Staff
Saving Yasha The Incredible True Tale Of An Adopted Moon Bear
Lia Kvatum
Saving Yasha The Incredible True Tale Of An Adopted Moon Bear
Lia Kvatum
Questions about the National Geographic Kids series
- What reading level is the National Geographic Kids series?
- The National Geographic Kids series by David A. Aguilar is at a Grades 1.7–6.5 reading level (average Grade 4.2). Intended for Middle Grades (Ages 9–12). There are 4 books in the series.
- What order should I read the National Geographic Kids books?
- The reading-order table above lists all 4 books with per-volume reading level and intensity ratings. Start with book 1 and read in publication order unless the table indicates a different recommended order for newer readers.
- What age is the National Geographic Kids series appropriate for?
- The National Geographic Kids series is recommended for Middle Grades (Ages 9–12). The average content intensity is 1/5. Check the intensity trajectory above to see whether content gets heavier across the series — if it does, sensitive readers may want to stop earlier in the run.