Less is more. We want our students to learn as much as possible. So it’s natural that we want to teach them a lot in a lesson. However, it’s better to teach them a little. Make sure it is at the appropriate level. That way, they will learn what we teach. Then we can teach them more. We will teach them a lot. We will achieve our goal. However, we won’t overwhelm them. For vocabulary, choose 7 words. It seems to be a magic number. Teach them well. Teach them with useful grammar. Less is more.