This is a STEM lesson that was designed to support our fifth grade Mixtures and Solutions unit, but could be adapted and modified for 4th through 8th grades. The challenge is to create a chemical reaction using materials like baking soda, vinegar, pop rocks, soda, etc. It includes student information sheet, student planning sheet, and rubric. This could be introduced at the beginning of a unit on chemistry as a way to motivate and focus students, or it could be used at the end of the unit as a culmination activity.
NGSS: Conduct an investigation to determine whether the mixing of two or more substances results in new substances. 5-PS1-4
Science and Engineering Practices:
Developing and Using Models
Modeling in 3–5 builds on K–2 experiences and progresses to building and revising simple models and using models to represent events and design solutions.
Develop a model to describe phenomena. (5-PS1-1)
Planning and Carrying Out Investigations
Planning and carrying out investigations to answer questions or test solutions to problems in 3–5 builds on K–2 experiences and progresses to include investigations that control variables and provide evidence to support explanations or design solutions.
Conduct an investigation collaboratively to produce data to serve as the basis for evidence, using fair tests in which variables are controlled and the number of trials considered. (5-PS1-4)
Make observations and measurements to produce data to serve as the basis for evidence for an explanation of a phenomenon. (5-PS1-3)
Using Mathematics and Computational Thinking
Mathematical and computational thinking at the 3–5 level builds on K–2 experiences and progresses to extending quantitative measurements to a variety of physical properties and using computation and mathematics to analyze data and compare alternative design solutions.