Good model, poor facts.

I have the same praises and gripes as others. The visuals of the app are great. I plug the ipad into the projector in my classroom and the ability to change elements in real time and switch between Bohr and 3D view is a great teaching tool. However, many of the facts need correcting. Lead is "still sometimes used to make bullets in fire-arms?" One, sometimes? Two, whats a fire-arm? Like, a firearm?

Todays lesson. Dont make something for education... incorrect.. You simply cant get away with it. Unacceptable.

rode then, ride now about Nuclear