The other night, Kiki got out her Polymer Science Kit and was doing some observations.
This would be considered Unschooling. She is doing Science on her own.
We purchased this kit ($14.99) about a year ago from Home Science Tools HERE. If you belong to HSLDA you can get a 10% coupon code through their website. On the front page click the Shopping Link and then the Perx link.
There is not much to this kit, I think, but Kiki loves it. A lot of these little polymer balls have been dried out and reused, so I would say it can be used over and over.