Videos
https://www.youtube.com/watch?v=T8NDznHX-5c
https://www.youtube.com/watch?v=epMHKhpYqJE
https://www.youtube.com/watch?v=02h9yhc7ruc
https://www.youtube.com/watch?v=Qtn0FCl-6-c
https://www.youtube.com/watch?v=XyDMsotfJhE
https://www.youtube.com/watch?v=3Ixp3PeAErI
Practice Activities & Worksheets
https://www.jensenmath.ca/6.1%20competing%20square%20-2%20worksheet.pdf
https://www.chilimath.com/lessons/intermediate-algebra/completing-the-square-step-by-step/
https://www.onlinemath4all.com/standard-form-to-vertex-form-by-completing-the-square.html
https://www.purplemath.com/modules/sqrcircle.htm
https://mryangteacher.weebly.com/uploads/7/7/0/2/7702250/complete_the_square_circles_1.pdf