This NO PREP lesson includes everything you need to teach isotopes. This product includes three versions of doodle notes (fill-in, blank, and teacher key), a visually appealing, editable PowerPoint, and a worksheet that can be used for in-class review or homework. This lesson teaches students about isotopes, mass number vs. atomic mass, and using isotope notation to count protons, neutrons, and electrons in an atom. This lesson can be used to discuss isotopic abundance, but does NOT include isot