Slow practice with C, F, and G chords

One of my online students really needed help with strumming and changing chords; at the same time she was learning La Bamba. 
It just so happens that C, F, and G are the I, IV and V chords in the key of C.
This is a video to help students with the Key of C and strumming in 3 different tempos. 75 BPM (beats per minute), 90 BPM and 105 BPM. 
If you need to improve your foundation skills with these chords then this video is for you!
Hal

https://youtu.be/aXykA7hWIn0