Everyone memorizes that “a negative times a negative equals a positive” — but few people actually understand why. In this video, we’ll use patterns and the distributive property to prove this rule visually on the lightboard! You’ll see how number patterns naturally lead to this result — no memorization, just logic and math beauty. Perfect for middle school, Algebra 1, or SAT prep students who want to deeply understand signed number operations. Drop a comment if this visual made the concept click

Do 2 negatives make a positive when adding? - TimesMojo