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👉 Learn how to take the derivative of a function. Learn how to find the derivative of a function using the chain rule. The derivative of a function, y = f(x), is the measure of the rate of change of ...

Learn how to solve a system of equations by substitution. To solve a system of equations means to obtain common values of the variables that make each of the equations in the system true. To solve a ...

Education research doesn’t only have to be left to university researchers and think tanks. Teachers can also do it themselves, and today’s post shares concrete examples. You might also be interested ...

Flash floods are among the deadliest weather events in the world, killing more than 5,000 people each year. They’re also among the most difficult to predict. But Google thinks it has cracked that ...

In 2019, Monte Leifheit, a warehouse operator at 3M, noticed his left eye was bloodshot and swollen. What began as a minor irritation turned into a yearlong medical odyssey marked by the lack of a ...

Some readers may solve the problem procedurally: line up the two numbers, add the ones column, carry the one, and add the tens to get 43. Others might instead notice a creative shortcut: 29 + 14 is ...

In a dark room, in the middle of the night, a woman lies dreaming. Suddenly, her eyes beneath their lids dart crisply left-right, left-right. The eye signal means she knows she’s dreaming. Lucid ...

When my cofounder and I were accepted into a competitive startup accelerator program in fall 2025, we applied with an ambitious idea: to build an “AI scientist” for machine learning research. What ...

Sen. Martin Heinrich, D-N.M., listens as Sen. Mike Rounds, R-S.D., speaks during a news conference at the Capitol on May 15, 2024 in Washington, D.C. (Photo by Kent Nishimura/Getty Images) Congress is ...

Steven Bouma-Prediger seldom sees students walking between classes without their faces buried in their smartphones. This distraction transfers into the classroom, where Bouma-Prediger takes matters ...