The black box lab is a classic way to develop inquiry and indirect observations in science. You can have your students show direct observations, and then explain that many of our scientific advancements (atoms, germ theory) were through indirect observations. While there are commercial black box labs you can buy, you can build your own for free! You can use USPS small flat rate boxes (which are delivered for free to the school), shoe boxes or recycled Amazon boxes! You can have after-school stu