Assessment & Evaluation
Seventh graders study elapsed time, radioactive decay and half-life. In this time machine lesson plan students complete several activities and view a presentation.
7th Science 3 Views 5 Downloads
Exponential Decay Formula (can skip, involves Calculus)
Sal continues his discussion of decay by showing students the math involved in determining how much a substance is left after one half-life, two half-lives, and even three half-lives have gone by. He sets up a general function of time...
12 mins 7th - 10th Science