Skip to main content
Serving advanced learners (and their teachers) since
2012
.
Pricing
Generate a Quote
Purchase Orders
Sign In Subscribers
Group Login
Math Puzzles and Challenges
All Categories
Depth and Complexity Icons
Introducing Depth and Complexity
Universal Themes
Power
Change
Systems
Order and Chaos
Conflict
Content Imperatives
Depth and Complexity Activities
Think Like A Disciplinarian
Enrichment
Games
Number Games
Visual Games
Chess Variants
Tic-Tac-Toe Variants
Word Games
Board Games
Art
Math Art
Inferring With Art
Impossible Shapes
Perspective
Self Portraits
Creativity
New Uses
Squiggles
What If…
Paradoxes
Puzzlements
Shakespeare Summaries
Re-Re-Categorize
Codes and Ciphers
Factors and Codes
Language Arts
Vocabulary
Words Within Words
Word Pyramids
Word Ladders
Multiple Meaning Matchers
Greek and Latin Word Parts
Idioms
Grammar
Reading
Writing
Writing Techniques
Analyze Writing
Writing Prompts
Poetry and Songs
Narratives
Non-Fiction
Better Presentations
Math
Algebraic Thinking
Number Theory
Ratios and Proportions
Geometry
Geometry Images
Shapes and Attributes
Volume
Area and Perimeter
Lines and Angles
Symmetry
Statistics and Probability
Numbers and Operations
Whole Numbers
Fractions
Decimals
Integers
Measurement and Data
Measurement
Data and Graphs
Olympic Pool Equivalence
Science
Space
Earth Science
Ecology
Geology
Hydrology
Weather and Climate
Engineering
Social Emotional
Social Studies
Geography
Culture and Society
Government
History
Create A Civilization
All Grades
All Grades
Grade 1
Grade 2
Grade 3
Grade 4
Grade 5
Grade 6
Grade 7
Grade 8
Apply
Fizz Buzz: A Counting and Divisibility Game
Ready for a tricky counting and divisibility game?
Gr 3-4
Parentheses: How big of a change can they make!?
Two tiny parentheses. One expression. How big of a change can they make? Bigger than you think.
Gr 5-6
Why Is Our Calendar So Weird!?
Why are there
12
months? Why don’t weeks fit into months evenly? Why don’t weeks fit into the year evenly? What’s going on with the calendar!
Gr 4
Contig
Roll three dice and combine them using any mathematical operation. But be strategic to maximize your points!
Gr 3, 5
Crossing Every Bridge Exactly Once (aka Eulerian Paths)
How can you cross each bridge in this city exactly once?
Gr 2
Doubling Dollars
Say you have a dollar. Say you can double that dollar each day: $1, $2, $4, and so on. How long will it take to reach…
one million dollars
? Not as long as you might think!
Gr 6
What Makes A Math Puzzle Actually Puzzling?
This math puzzle fell flat. Why? Because puzzling isn’t about difficulty — it’s about something else entirely.
Gr 2-3