There are two game styles: ‘Lesson mode’ where you can learn along with the program, or ‘challenge mode’ where you try and complete the given shape without assistance.
My kids love to play this game. It makes math a lot more fun to practice. The game comes from K12.com. When I was testing links on my page to make sure they still worked, the link I had the last time I updated was dead. So I googled the game and landed on K12’s site. The problem I had with their coding is that on some browsers, especially Safari, it downloaded without prompt. I couldn’t in good faith send you to a site that might cause you to download anything without your permission. So, I learned the code to place the game directly on my page. In all my tests on a variety of browsers, the game didn’t auto download. I value you and your equipment. If you run into a scenario like that, please let me know what happened, your browser and computer.