Audiobooks
Master Mental Multiplication: A Series of Quizzes for All Ages: Ace Algebra, Improve Memory and Increase IQ (Math Wizard, Book 2) (Unabridged)
2023
Master of Pi: Easily Memorize the First 10,000 Digits in Record Time: Unlock Your Brain, Learn the Power of Pi, and Discover Your True Potential: Math Wizard, Book 1 (Unabridged)
2023