This is a 8 minute video that I use to replace direct instruction time inside the classroom, sometimes referred to as "Flipping the classroom" This video is assigned as homework, the students watch the video at home and then the next day a completion check is taken and the class is spent working on more in depth practice and application of those concepts.
Key ideas covered in the video include:
Accuracy vs precision
recording significant digits
Rules for significant digits
Adding/subtracting/multiplying/dividing with significant digits
I usually cover this topic before our first lab and so am modeling taking Cornell style notes as I am speaking. It was tedious to try to write and speak as quickly so I created a sort of fill in the blank template for myself to save some screen time. This video was recorded using a document camera, a USB headset w/microphone and a free screen capture website. Use this to save some class time, and have your students watch videos for homework!! Use it as a guide in how to record your own videos.
I am always looking for new ideas and am welcome to suggestions for particular products that you may need! Feel free to contact me at firstname.lastname@example.org and thank you for your support!