Skip to main content

Why do I have to use a number 2 pencil?


1,729 Questions Answered

Best of Web

Let’s Begin…

Why do exams always tell you to use a number 2 pencil? What happens if you don’t? SciShow explains.

About TED-Ed Best of Web

TED-Ed Best of Web are exceptional, user-created lessons that are carefully selected by volunteer teachers and TED-Ed staff.

Meet The Creators

More from How Things Work