It's an adventure in a basic math school!

This game has a backstory: something happened to your friend. He forgot all his notebooks at school. He doesn't have time to get them back because of other problems. So as his friend, this task is left to you. You need to do your best to get back all his books in time. So you have to go back to school again and look for your friend's notebooks in many classrooms where you can run around and explore the school and find the notebooks to solve the math problems.