This toolkit supports the development of an instructional unit on water quality that aligns with science, mathematics and English/Language Arts standards for students in grades 6 and 7. The elements of this toolkit were assembled based upon their suitability for constructing a multi-day instructional unit on water quality that corresponds with the 5E Learning Cycle of engage, explore, explain, elaborate, and evaluate. At the heart of this toolkit is a Model Eliciting Activity (MEA) created by the Institute for P-12 Engineering Research and Learning (INSPIRE), housed at Purdue University. The INSPIRE Water Filter MEA is designed to integrate instruction in the subjects of science, math, engineering design, and English Language Arts. Your task as a lesson study team is to analyze the materials that are included in this toolkit and evaluate how they can be incorporated in a 5-E instructional unit plan that complies with the standards for science, English/Language arts and mathematics that are indicated. Ultimately, your team will design a three to five day unit on water quality that incorporates the materials provided in this toolkit. As you study these resources it is important to make note of any deficiencies or gaps that will need to be addressed and make modifications in the lesson resources and activities where needed.