This lesson plan is designed to practice passive voice & inventions topic. It will also deal with the revision of previous lesson (passive voice + materials), as well as some of the irregular verbs learning/practicing. Your students will learn some of the inventors and their inventions, which is fun & profit! Touching upon the problem of possible future they witness thanks to the invention of the time machine is also fun and will make your students' imagination work. It's a complete lesson plan suitable for all levels, except beginners.