To get an internal sense of how numbers relate to each other, students can practice working with number lines.

Mathematicians love the certainty of proofs. This is how they verify that their intuition matches observable truth.

It’s hard to imagine an American home without Chinese products. Many essentials are imported almost entirely from China — and with new tariffs, they’re likely to become more expensive. We ...

But a small time frame before that begins in which the cardinals can sort of — it’s not campaigning because you’re not allowed to campaign, and campaigning is definitely frowned upon.