Its not mandatory for third graders at our school to be part of the Science Fair but Preston's teacher in her 'infinite wisdom' decided to make it mandatory for her class. Joy... So we pondered and looked around and finally Preston decided he wanted to grow crystals. I think he wanted to grow like Quartz and other fun things like that but since that wasn't very feasible we settled on salt, sugar and alum crystals. We set it up when school got out for Christmas break and let them grow.
The actual Science Fair is January 1oth. We'll let you know how it goes.