15 middle school science units are in this money-saving bundle! There is one unit for each of the Next Generation Science Standards! This bundle is full of lessons, non-fiction texts, graphic organizers, data, STEM challenges, essential vocabulary cards, mini-posters, photographs, video suggestions, and more!! Make your school year easier with this purchase! What others are saying about our science units,"This product is thorough and ready to use. Thanks for putting this together. I'm telling