The Joy of Data

Counting from Infinity: Yitang Zhang and the Twin Prime Conjecture

Curriculum vitae

The Spell of the Poincare Conjecture

Beautiful Young Minds

Metamorphose: M.C. Escher, 1898-1972

Theory of Sets

Clouds Are Not Spheres

Four-Point Conics

The Story of 1

Meet the Math Drills - Subtraction

Meet the Math Drills - Addition

Meet the Math Drills - Multiplication

Meet the Math Drills - Division

The Wesley Verbank Octagon

Magic Money: The Bitcoin Revolution

The Standard Deviants: The Dangerous World of Pre-Calculus, Part 1

The Standard Deviants: The Pumped-Up World of Pre-Algebra, Part 1

The Standard Deviants: The Adventurous World of College Algebra, Part 1

The Standard Deviants: The Adventurous World of College Algebra, Part 2