Andrew Gatt is the creator of PaperRollerCoasters.com, from where he has sold over 4,000 paper marble tracks to all 50 states in the USA and over 30 countries worldwide. He is also a physics teacher in North Carolina, USA, and was awarded the 2004 Presidential Award for Excellence in Mathematics and Science Teaching. Presented by the White House, it is the nation's most prestigious teaching award for math and science teachers.