Volume (Graduated Cylinders)
Volume is the measure of how much space an object takes up or how much empty space it holds (capacity). The SI unit of volume is the liter. For water, a liter is like a large jug, a kiloliter is like a small kiddie pool, and a milliliter is like a large raindrop.

Here's a quick online practice to how to use a graduated cylinder. Remember to read the meniscus!
http://www.wisc-online.com/objects/index_tj.asp?objID=GCH302