an action that may fail but has a good chance to succeed
The company took a calculated risk when they opened a new store in a very quiet area.
Things Successful Teachers Do Differently
Teach in a variety of ways
Don't be lazy to use as many different materials for your lessons as possible. Students believe that the best teacher is able to teach in a big variety of ways: use books, videos, music, presentations, speeches, and everything that can be interesting for your students to accept (you know them better, so, you will definitely come up with good ideas).
If you show them a video, then give some papers with facts described in that video, then tell them all this info yourself, it will be much easier for your students to understand and get the material.