This may be a hard tip to employ, but it is a smart one. Don’t demonstrate how to do anything the wrong way in dance class. Even though this can be a great way to get the message across to students, the fact is, you can injure yourself. Proper technique is designed in part to help you stay safe. It’s based on biomechanical principles, and when you alter them, bad things can happen.
As teachers, we are often guilty of not warming up properly, or not taking enough classes ourselves. This is another reason to avoid demonstrating things the wrong way. If you aren’t in tip top shape–injury can be a lot more likely.
You can verbalize the incorrect form, but stick to showing your students the right way to do things. It’s a lot safer.