福田の大学別シリーズ北海道大学入試問題解説2020年版

This is an app for examinees who publish all the entrance examination questions for the past 4 years at Hokkaido University and can see the detailed answers and polite commentary videos. See the problem. Solve it yourself. Check and confirm the answer. If you don't understand it, understand it by watching the commentary video. This cycle can be realized with this application alone.