The book, Memorize in Minutes: The Times Tables, was based on a method Alan developed in his classroom over 10 years ago. Using pictures and stories, he was able to teach ALL of his students the times tables in a few weeks spending just 10 to 15 minutes a day. He shared his method with other teachers, and these teachers provided constructive feedback in return. The final book was a result of hundreds of hours of research and development. His newest book, Multiplication in a Flash, uses "quick tricks" (mnemonic devices) to teach the twos, fives, and nines, and uses pictures, stories, and activities to teach the remaining facts.