This lab uses amylase enzyme isolated from soaking pinto beans in water to allow students to investigate the function of enzymes. The teacher will demonstrate a sample set-up of the lab, but students are responsible for picking an independent variable they think will effect the function of amylase and writing a procedure to test that variable, and then performing the experiment.
I have included my lab analysis writing instructions and rubric, but even more common core standards can be addressed by having students complete a full lab report and or by making this one activity in a part of a larger research project. See my bundles on TPT "Complete Lab Report Guide for Standard Level Science Classes" and "Complete Lab Report Guide for Advanced Level Science Classes" for more in depth writing and grading help.
This lesson takes 2 half-days (needs an overnight period), but the lab analysis writing instructions and rubric included can be used for all lab investigations all year long!
Included: Teacher instructions for lecture/discussion of chemical reactions and enzymes and the bean juice lab, power point to accompany lecture/discussion, student background information and instructions for the bean juice lab (and follow up questions), teacher notes and instructions for writing lab analysis, lab analysis writing instructions and rubric, and academic honesty power point.