If you read my articles regularly, you know that I reference my favorite internet resource for Calculus topics - blackpenredpen - quite often. His channel is an absolutely incredible resource for math teachers and students, alike. He does this thing where he takes a topic and sometimes does six hours worth of problems and solutions in one take! Math Marathon!
Here is a boot-camp-style list of my favorite marathon videos and associated resources, as a little bit of a one-stop-shop for refreshers and discussions. In no particular order:
100 Trinomial factorings
(https://www.youtube.com/watch?v=LmbqB_pfcDU)
100 Derivatives
(https://www.youtube.com/watch?v=AegzQ_dip8k)
100 Integrals
(https://www.youtube.com/watch?v=dgm4-3-Iv3s)
100 Calculus 2 problems
(https://www.youtube.com/watch?v=Kwyk_mteyNc&t=1744s)
10 Series you can do in your head
(https://www.youtube.com/watch?v=dZ5dtcJsxgI)
100 Series
(https://www.youtube.com/watch?v=jTuTEcwvkP4)
I mean, these are really really great. I think all of them come with a link to a PDF of all the problems covered, so you can print and solve along with the video or simply use them later for practice. I wanted to shout these out and endorse them as super helpful to me and to lots of other students. There are many many more videos on blackpenredpen’s channel; please go and have a look!
Thank you, blackpenredpen!