**Numberbender** is Mr. Esperanza’s portal for his flipped classroom model which contains videos lectures in algebra, statistics, trigonometry, pre-calculus, and calculus in English and Filipino.

Numberbender.com is a site developed for downloadable math materials for teachers and students. A flipped classroom is one in which students watch and complete online lectures on the subject matter at home, and use their classroom time to work on problem sets with the help of their teacher and classmates.

Mr. Esperanza currently teaches AP Calculus, AP Statistics and other math classes at Barstow High School in California. He is also an adjunct professor at Barstow Community College and Chapman University. A graduate of De La Salle University and Southwestern University, he is completing a doctorate in Development Education at Cebu Technological University.

Mr. Esperanza was awarded an Apple Distinguished Educator for 2015, and was recognized as the 2015 Barstow Teacher of the Year.

Numberbender seeks to provide digital presentations for more engaging math lessons. Anecdotally, prior to using these videos, Mr. Esperanza had one of his students pass the AP statistics exam and two who passed the AP calculus test; after incorporating the flipped classroom videos, he had ten students post passing scores on the AP Statistics exam, as well as an increase in the AP Calculus pass rate.