Be sure to check out the various templates that are already created for this to do so click on file and choose template. This will give you a menu of templates. Check out the templates for language arts. They can type them into PowerPoint and add buttons when it is time to make a choice. You could compare the actual weather to the forcasted weather, or compare Indianapolis weather to another city.
Inspiration has a great selection of weather graphics.
Create a database of famous black Americans. Each student would have one famous black American to research. When they had completed the research, they would enter their own data. When everyone was finished you would have data about a lot of different people to give to your students. Have them fill in the data as they locate the information.