👉 Learn how to graph quadratic equations in vertex form. A quadratic equation is an equation of the form y = ax^2 + bx + c, ...

If you don’t remember March 11, 2020, you’re obviously under the age of 6. It was the date the World Health Organization officially declared COVID-19 a global pandemic.

Note: I write my columns on Wednesdays. I’m writing this one on March 11, 2026 — exactly six years after what I’ll call Pandemic Lockdown Day. If you don’t remember March 11, 2020, you’re obviously ...