Time

Professor Mahesh Sharma, at the Center for Teaching and Learning Mathematics, teaches that the clock is a ruler wrapped around a dial.

3 - quarter past or h:15

12 - o' clock or noon

or midnight

6 - half-past or h:30

9 - quarter to or h:45

Rod Pierce at MathIsFun.com, made a great interactive analog clock. Click here to load the clock in a new tab if it does not appear below.