StudyJam is a free site that has plenty of interactive activities for you and your students to explore. I’ve only had a quick look through the Math section and it looks pretty useful. There were some handy little tricks for teaching students about division rules that looked like fun. This website can be used in lots of different ways in and out of your classroom. I’m thinking that I might use parts of this as a tool for our “flipped classroom” activities by providing a starting point for students to gain some basic understanding of topics at home, complete a set activity that I provide for them and then continue that learning in the classroom. Worth a visit in any case.