System 44 Books in Order
3 books by Unknown. Reading level: Grades 1.8–2.4. Middle Grades (Ages 9–12).
3
Books
Grades 1.8–2.4
Reading Level
1/5
Avg. Intensity
MG
Middle Grades
Content Intensity Across the Series
ConsistentContent stays at a steady intensity level throughout the series.
First book Latest book
System 44 Reading Order
| # | Title | Reading Level | Content |
|---|---|---|---|
| 1 | Gross Bugs! Unknown | Level 1-2 | Gentle |
| 2 | Hunt and Kill: A Look at Predators Unknown | Level 1-2 | Gentle |
| 3 | System 44 Next Generation Audiobooks | Level 2-3 | Gentle |
