Is your Science class learning/about to learn the CIRCULATORY SYSTEM? This resource is perfect. It has everything that you need. There is a note presentation with a note packet for students to fill out (includes a key), diagram of the heart, a filled-in one, and a blank one for students to fill in, and a 20-question quiz (key included)! Buying this resource will save you a TON of time. Trust me, it's worth it :)