Carolyn Winkel

When he was 14 years old, Rob Kenney's father abandoned him. After he became an adult, he launched a YouTube channel called "Dad, How Do I?" that teaches kids to do things that a dad would normally teach them. He has more than 18 million views.

How your eyes work: #neuroscience

Today’s quick #STEMstarter challenge: get some dry ice, put it in a beaker on a scale, & watch what happens to the mass (lots of great discussion questions you can ask)

This video shows the versatility of the Zipper truck system which helps create tunnels with openings very quickly with no permanent support work [full video, Lock Block Ltd.: buff.ly/2QSk869]

This video shows how you can easily draw an illusory 3D stair using anamorphosis, or the view of a recognizable image only from a precise vantage point [📹 refachero19: buff.ly/3WkRxZa] twitter.com/mshavisham/sta…

They always said I was too small to play at the next level. —@StephenCurry30

How to create your own tensegrity table. The concept of tensegrity was invented by Kenneth Snelson and made famous by the architect Buckminster Fuller in 1949 [read more: buff.ly/41Tgqhp] [📹 Engineer Ye: buff.ly/3Nr9tjc] t.co/J1bcJk78Ib

"If you believe you can change, you can adapt to any challenge." #Sketchnote via @woodard_julie

Education Twitter continues to be so negative. Spent some time today muting and blocking many educators, with continued negative, extreme, political, or intentionally misleading posts. Felt great. We need to be better, as educators, leaders, and role models.

@Theholisticpsyc Waterloo, Ontario

🎉GIVEAWAY: I want to gift a copy of my workbook. TO ENTER: 1. Retweet 2. Comment where you’re from Thank you all for the amazing support. Good luck! Winner will be announced today. amazon.com/How-Meet-Your-…

Filled with non-newtonian fluid, these speed bumps behave like a fluid when a car is under the speed limit. If the vehicle exceeds the speed limit, the fluid hardens and become a speed bump [source, video: buff.ly/2xIDxOX]

This collection of slow motion videos of objects falling in water and cornflour result in spectacular fluid motion effects, with highly unexpected but extremely satisfying geometries and shapes [📹 buff.ly/3F3pqrc] twitter.com/trinukso2/stat…

“The greatest danger to our planet is the belief that someone else will save it."

Laminar flow in fluid dynamics is characterised by fluid particles travelling in parallel layers passing each other without much or any mixing, At low velocities neighbouring layers slide past one another like playing cards, on camera it appears frozen.

How you hear sounds: #biology by design_cells

@DMarkDrummond Happy Birthday, Mark!

What happens when we sleep?

Now you know - this is how bridge foundations are laid in waterways.