/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: pongping564 https://public.slidesharecdn.com/v2/images/profile-picture.png PingpongMath is a website for asking and answering math questions. Users can easily post a question by taking a photo of any type of math question including school assignments, SAT questions, and AP questions. Users with great math skills can also participate by answering questions, just like helping friends in class! It is easy and free.