@mathandcobb: I'm finally learning how to do the "dotted line chalk trick" on my blackboard.... Great success 😄🏆 #math #TikTokLearningCampaign #chalk #blackboard #chalktrick

mathycathy :

Whenever I can’t sleep I watch five hours of Walter Lewin’s dotted lines on YouTube

Elise :

My Physics professor in college strictly used hagaromo chalk and gave me a pack as a graduation present. Nicest gift I’ve ever received but unfortunately I have yet to locate a chalk board in my adult life

atxvato :

This is like a visual representation of me trying to learn how to roll my rrrr’s

Blackbirdphys :

oh that's satisfying

FarkleGriffen :

Try to do a full circle

🦨arah :

Tenured activities

mattcooksbad :

sounds like a toot

markp :

my college went to white boards 10 years ago. I so miss chalk.

wterdragon5 :

now post a 15 hr dotted line with chalk asmr video xD

nichakungz :

that's chalking

Nes :

Me: "It works the opposite direction?!"🤯 (You respond like you can hear me thru the TT) "Yea"

Crysanthos :

Just fo_or fun :

Most educational video he ever posted 👍

Stonky Bonky :

Snow :

It's called stick slip

Baz (@cortexeverywhere) :

bravo

franky :

Im fried thank you for this

נהוראי🥷 :

ppl who are satisfied from simple stuff 🥰

ErikwithaK :

You made my day

Steve Hussung :

Spent about 4 hours not doing homework to learn how to do this with regular chalk--worth it, but did not do well on that homework

ignited foxy000 :

I wish chalk board still existed..

DJAzrael :

its quite easy after u do it for a day but doing circles or just any arc bigger than π

Mr. C :

what about horizontal?