Khan/khan-exercises — pull request #18481 by imranghory (2012-04-04 11:52:41+00:00)
Title: Number Line 3: Replace terms bigger/smaller with greater than/less than for clarity

Bugs #17979, #17387, #13990

Students were getting confused because the hints say that number to the left on the number line are smaller, which doesn't make sense for negative numbers (because while -10 is less than -4 and falls to the left of it on the number line, -10 is also bigger than -4).

Replaced the term smaller/bigger with "greater than"/"less than" which should be understandable to the students doing this exercise.