Extra credit can be found here as articles to read and reflect upon or by finding useful interactives or videos for Mr. Frat to use!
Many of the interactives are fun and can be used as games or as back-up learning tools if there is a concept you don't understand. They are not required as part of the curriculum, but are worth checking out.
The videos can teach all sorts of crazy and weird, but cool knowledge about the world around us. Have a random question that you have wondered about? Often times, then answers can be found on one of these channels.