It's a free practice website.
It has math through pre-calculus.
Topics are broken down into skills that match our curriculum nicely.
To "pass" a skill, a student has to get four problems correct.
There is an instructional video explaining each skill.
The data tells me what problems students missed, how long they spent on the work, as well as the ones they got correct.
I use BrainGenie as extra practice on skill-based work. I assign 1 - 6 skills per unit. Students complete the work independently outside of class. The work is typically due on test day.
BrainGenie provides immediate feedback and tutorials for students ... and easy grading for me.
Teacher Desmos Activities
My favorite web-based game tool is Quizizz! Students told me about this one first because their chemistry teacher was using it. Then I had the opportunity to talk with the chemistry teacher in a PD session - to learn more about the tool. Students like it better than Kahoot because the questions are on their screen. They get to move at their own pace. And there is a leaderboard where they track their progress. I like it because students can move at their own pace. The questions are scrambled - students are all working on different questions. I also like that I can use questions from public Quizzes ... just by selecting the individual questions that work for our content. I can also use Quizizz as homework - although I have not tried that feature yet. Students keep track of their progress but I get detailed reports about their work. I rarely use Quizizz data for grades - instead I use it as informal data to help me plan the next lessons. I can see what questions are giving kids fits!
One other favorite is ClassKick, my favorite iPad app. I wrote about it here!
I use these four tools as bones on which I build lessons!