2 ms·

Mostly North American. If you're interested, these videos explain and discuss each "trick" in more detail: https://www.youtube.com/watch?v=1gxLwLBl4mM&index=4

by OTmath 11y ago

Mostly North American. If you're interested, these videos explain and discuss each "trick" in more detail: https://www.youtube.com/watch?v=1gxLwLBl4mM&index=4&list=PLAmlm9_MPQMSJ4kRHofj7xkJN1aqmGuQ8 https://www.youtube.com/watch?v=1gxLwLBl4mM&index=4&list=PLA... It's a work in progress...