This is a 2-3 mini-unit that introduces the mole calculations. If your students struggle with mole calculations, this may help! This package includes a 33-slide powerpoint, a worksheet with 22 problems & answer key, a short "activity" in which students calculate moles of regular items.
Powerpoint is also sold separate; check my other listings.
I am a sixth year high school science teacher. I teach all levels of chemistry, and have taught all levels of biology, as well as semester electives in environmental studies, forensics, and food science.