Chapter 2
The Library of Leaves
Reading, searching for existing knowledge, and using research tools
Before a scientist runs a single experiment, they find out what other people have already discovered. That is the big idea of Chapter 2. Across pages 11 through 25, wise Professor Hoot leads the friends into the Library of Leaves, where every leaf on every tree holds something someone once learned.
This is the longest stop before the experiment begins, and for good reason. Kids color scenes of searching shelves, reading together, taking notes, and a late night study session. Without ever using the phrase "literature review," the chapter plants the idea behind it: smart researchers build on what came before. One page even shows the friends climbing onto the Giant's Shoulder, a nod to the famous saying about seeing further by standing on the shoulders of giants.
Parents and teachers can bring this chapter home with one simple habit: when your child asks a question you cannot answer, look it up together and talk about where the answer came from. Librarians love this chapter because it treats the library as a place of adventure rather than homework. By the final page, kids understand that finding out what is already known is not cheating. It is how every discovery begins.
What kids learn in this chapter
Recommended ages: 4-8
- Understand what a literature review is
- Learn to find and evaluate sources
- Build on existing knowledge

Page 11: The Tree Library
Before we explore, we must read!

Page 12: Book Mountain
So many books, so little time!

Page 13: Subby Scans
Subby helps find the most important words.

Page 14: The Old Scroll
We look at what other smart people discovered before us.

Page 15: Digging for Treasure
Finding good information is like hunting for treasure.

Page 16: Bad Source vs. Good Source
We only want the freshest, truest facts.

Page 17: The Puzzle Piece
Your research adds one new piece to the puzzle of knowledge.

Page 18: Highlighting
Color the magic words!

Page 19: The Stack
If you wrote a book, what would it be called?

Page 20: Sorting Hat
Subby sorts the information so we don't get confused.

Page 21: Late Night Study
Learning is hard work, but it's fun!

Page 22: Connecting Threads
Connecting ideas helps us see the full picture.

Page 23: The Giant's Shoulder
We stand on the shoulders of giants to see further.

Page 24: The Maze
Help Cat find the answer!

Page 25: Checklist
Step one is done! We know what the books say.