STEM Units of Study Bundle Using the 5E model includes FOUR STEM Units of Study with 90 activities, lesson plans, challenges, inquiries, science, engineering, technology, math, and literature integration, as well as a complete curriculum to teach each unit. These units are aligned to NGSS (The Next Generation Science Standards.)Each unit is four-six weeks of STEM for your second graders. Each day focuses on the 5E model and provides you with the exact tools to illustrate the concepts. All of the