We finished Friday’s lab exploring electromagnets and students compared results. I had students look for as many ways as they could to change the properties of the field around the electromagnet. I was surprised to have several groups decide to try flipping the nail in their electromagnet to test what effect that had. I was glad they did, because it reinforced that the nail itself was not the source of the magnetism.
I did some grade checks during class on Friday, so the students weren’t asking very many questions on the neutralization worksheet and, as a result, almost no one had gotten past the example I did on Friday. We spent some time revisiting how to write the equation for a neutralization reaction and students got some time to work.