This guide goes along with the YouTube video How to Calculate the Circumference and Area of Circles. Students could do the notes before the lesson as an intro, along with the notes, or as an extra item to review over the concepts from the unit. You may have to pause the video for students to have time to write things down. The skills covered are parts of a circle, going back and forth between radius and diameter, calculating circumference, and calculating area.Key sheet with link at the topStude