+389 When doing a long math problem, it would be nice to have a buzzer go off in your head when you're about to make a mistake, so you can fix it before you get to the end of the problem and realize it's wrong, amirite?
13 years ago
+389 When doing a long math problem, it would be nice to have a buzzer go off in your head when you're about to make a mistake, so you can fix it before you get to the end of the problem and realize it's wrong, amirite?
13 years ago