We recently wrote about how infinitely large sets are not all the same size as each other, but we were a bit vague about what we meant by a set. The people who invented set theory also started out ...
In this lesson, students learn to find the fraction of a set. In this lesson, Ms. Brewer will teach 3rd grade math students to find the fraction of a set. / Carrie Brewer, East Saint Louis School ...
In How Not to Be Wrong: The Power of Mathematical Thinking, University of Wisconsin professor Jordan Ellenberg celebrates the virtues of mathematics, especially when they're taught well. He writes ...
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