Elementary School, High School & Beyond

• Exploding Dots
• G’Day Math!
• Mathematical Association of America &  American Mathematics Competitions Curriculum Inspirations
• Think Puzzles and Think Cool Math
• Think Curriculum!
• Global Math Project Experiences
• Math Circles Activity Database
• NRICH: University of Cambridge

College Mathematics

• College Algebra for Humans
• How Infinite Series Reveal the Unity of Mathematics
• Nigel Smart’s Cryptography: An Introduction (3rd Edition)