Free Math is an interesting new service that students can use to complete math problems and then submit to their teachers their solutions along with steps taken to arrive at the solution. Teachers can use the service to grade large batches of their students' work.

It took me a few tries to wrap my head around how Free Math works, but I settled on the idea that it's basically a digital notebook that students submit to you for grading. Students complete math problems on Free Math and then send a file to you. You can assign problems to them from any source because they have to write them into Free Math. Once you have received the file you can upload it to Free Math where the program will grade your students' work. Free math can handle more than 100 assignments at a time. Watch the following video to see how the program works.