This is just a short little presentation to get students interested in Cubism. High school students love drama, so why not include some art historical drama? This could be a lead in for a project or just a part of a series of interesting art history. People love random interesting facts and we love being the ones to share those facts. Give your students something to tell their friends and they will remember that long after they have forgotten your project.
Make sure you know your stuff on this topic, there will be questions I can guarantee it! And don't be afraid to say "I don't know", you can't know everything but you can look it up. Or it might be fun to let your students make a list of questions that they would like answered. Have everyone look up the answer to their question as homework and share what they learned next class.