A little worried about how to introduce dance? Why not give this a try from INSHAPE:

Students can use their Chromebooks to locate music and I've created a file that can be shared through Google Classroom for students to submit their dance to you: goo.gl/Fdx7YE. (The link takes you to a preview, so you can decide if you'd like to use it. If so, just click the blue "Use Template" button in the upper right. You will, then, have your own copy which can be edited as you wish and shared with students.)