Here is a list of puzzles, activities, and information found on Math Lair that may be interesting for kids. This isn't an exhaustive list; younger mathematicians may find many other topics on this site interesting if presented in the right way.

- Amicable Numbers
- Arithmetic Tricks
- Big Numbers and More Names for Big Numbers
- Birthdays
- Bookworm Puzzle
- Calculator Spelling
- Divisibility Tests
- Don't Make a Triangle
- Encircling the Earth
- Estimating the Circumference of a Glass
- Four 4s Puzzle
- How Big is a Million?
- How Much Profit?
- Loops
- Magic Squares
- Math Humour
- The Möbius Strip
- Numbers in Different Languages
- One-Dollar Words, One-Dollar Sentences, and One-Dollar Word Value Calculator
- Phone Equations
- Postcards
- Rockets Candy
- A Stack of Books
- Tic-tac-toe
- Trading Post
- Water Jug Problem

Here's a list of reviews of books of interest for younger readers:

- Perplexing Puzzles and Tantalizing Teasers by Martin Gardner
- The I Hate Mathematics Book by Marilyn Burns
- Math for Smarty Pants by Marilyn Burns