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You spent years in art class learning that red, yellow, and blue make every other color. Then you bought a printer and discovered it runs on cyan, magenta, yellow, and black. So which "primary" colors are actually primary?
In her latest video, Dr. Janet Johnson unpacks why screens, printers, and elementary school paint sets all disagree, and what that reveals about how light, ink, and the human eye actually work.
https://youtu.be/X2BXOlirNxw?si=fs2X8sEykbIQ-tmR

What happens when you finally see how the system actually works?

In Chapter 5 of "Mismatched," Dr. Janet Johnson returns as a math teacher in the 1980s. The same gatekeeping that once blocked her path is now visible to her every day — a counselor telling her that brilliant students from the wrong neighborhoods "aren't the kinds who take advanced math." A certification system that turned her degree and experience into nothing without the right piece of paper. And then one phone call to "Bill's wife" handed her three certifications instantly.

It was, as the chapter puts it, a social network dressed up in bureaucratic clothing.

Watch "Shifting Foundations" — Chapter 5 of Mismatched with Dr. Janet Johnson:
https://youtu.be/tcySi0aodck

Shifting Foundations (Summary) | Mismatched Chapter 5 From blocked student to insider witness—what happens when you finally see how the gatekeeping machinery works?In the 1980s, Janet Johnson became a mathematic...

We've known for decades that schools use demographics instead of achievement data to decide which students get access to advanced mathematics. So why hasn't anything changed?
https://youtu.be/xe5scfPgPGA?si=tvClORzjFo_tcz2Z