There are TONS of activities based on different concepts. I could definitely see using this in class, but also assigning differentiated problems or activities for homework.
As I said, the website originated in Finland, so it is available in multiple languages which are great for English Language learners.
As the students complete the problems they are instantly given feedback. This is helpful for students to understand their mistakes.
Their activities are tracked and recorded so that parents, students, or teachers can easily see where progress is being made.
So come check out 10monkeys! There is also an app available on the app store, which practices multiplication facts in game form. Click on the monkey below to be taken to the link for the app.