I tried to acquire the fun of operating machines such as iPhone and iPad and the knowledge necessary for studying. It is important to devise various ways to motivate students to study. It is also important to think about how to feel good. Therefore, we have devised so that the same contents can be displayed on the page where the Internet and the storage device coexist on one screen, and the storage device on the page where with the storage device, you can write characters with a finger. In addition, it is equipped with a double map that displays two different types of maps on one screen. I was able to do this with this device. There are more than 50 states in the United States, and the places other than Hawaii are so large that Japanese people don't even know where they are in that large country. For example, many people don't know if Wyoming, which appeared in the Western movie a long time ago, is in the southern part of the United States or near the east coast, but you know the geyser in Yellowstone. I searched the internet to see what kind of products there were, and I could easily see the map. However, I could only see it and nothing remained in my mind. After that, when I tried to look at other maps, I couldn't find the state of Wyoming where Yellowstone is located because the United States is so large. I didn't know the spelling of Wyoming or Wioming, so I had a hard time and finally found it on the double map of this App. Thanks to the hard work of doing this, I now have a clear Wyoming and Yellowstone location in my head. In the past, Wyoming was mainly agricultural, but now it is famous for tourist destinations where you can see nature at all. Now I can really enjoy studying the United States. If Americans are interested in studying Japan, I think that this method will be a fun way to get Japan into your head.