Heat one cup of water on the stove and add three cups of sugar. Add a little at a time, stirring to dissolve. You are making a saturated solution — so full it can’t take in any more sugar. When it is all dissolved, pour it into a clean jar. Tie a string to the middle of a pencil. Tie a paper clip to the other end. Make sure the string is short enough so that the paper clip doesn’t touch the bottom of the jar. (You don’t want it to touch the sides either.) Lay the pencil across the top of the jar so that the paper clip and string hang in the liquid. Let it sit a few days and watch the sugar crystals grow. The sugar crystals are just sugar molecules attaching together.