Thank you for viewing! This is a social studies memorization textbook that my child used when they were taking high school entrance exams. It comes with a red sheet so you can hide the answers. It's a relatively small textbook, so they would secretly put it in their bag when going to play with friends and use it on the train or bus rides, or they would use it while lying on the sofa when they didn't feel like studying by writing in a notebook. I hope it can be helpful for the next student preparing for exams. This is a textbook that was used normally, so please consider purchasing only if you understand the condition. Thank you.