How to Apply to YC With a Classroom Lecture Tool

Y Combinator is a startup accelerator based in San Francisco. The company was founded by Sam Altman and Paul Graham, two of the co-founders at YC. They are now working on their second product, which they hope to launch later this year. In an interview with CNN's Kara Swisher, she talked about how they came up with idea for classroom tool that students could push during lectures.