Before we dive too deeply into pH, we take today to brush up on unit conversion and scientific notation using the Unit Conversions 2 – Scientific Notation and Significant Digits Gizmo. Students who needed additional time and/or help with homework had the opportunity to work in small groups and with the teacher. At the end of class, students who want the opportunity to re-take the chapter 15 quiz received the Chapter 15 Quiz Retake Ticket as homework. The packet requires students to show their work as they solve problems and the packet must be completed correctly before students may retake the quiz. Students who want to retake the Chapter 15 quiz must do so after school on Monday, April 2.