General Card #3424
Chemical Reaction and Stoichiometry Instruction through Service Learning Preparation (PBL)
Summary
Creating value while assessing and managing risks.
Description
Project Based Learning - Students from the 6th grade middle school are coming to see a session on chemical reactions put forth by the Alchemist Club at the university as part of a STEM Field Day. The lab manager (portrayed by the students in the course) must prepare a lab protocol that is accurate, safe for all participants, and minimizes hazardous waste production.
Deployment and staging schedule
- Jigsaw; out of class expert groups via discussion boards on LMS; in class home groups.
- Module delivered in ten lecture periods
- (Jigsaw 1) lecture and practice on day 1, lecture and home groups meeting on day 2, lecture, clarification, practice within home groups on day 3.
- Days 4-6 will be lecture and in-class group practice on identifying reaction types and predicting and writing balanced equations.
- Day 7 will be a Student Academic Controversy discussion on Lab Safety and Waste Materials and brief introduction to stoichiometry.
- (Jigsaw 2) lecture and practice on day 8, lecture, clarification, practice within home groups on day 9, gallery walk and condensed group protocol sheet presentations on day 10.
Deliverables and student assessment
- In class poster presentation for reporting (after 2nd jigsaw only) (group)
- One page reflection piece (after naming Jigsaw and after completion of project)
- Lab safety reflection (assesses the EM of connections)
- mini-exam on naming and writing chemical formulas
- exam on chemical formulas, chemical reactions, and stoichiometry (individual)
- Protocol sheet (individual); (assesses the EM's of connections and creating value)
- Self and Team Evaluations
Connections
- Assess and manage risk
Background content provided to students: A 6th grade class from Platteville Middle School is coming to the university for a STEM Field Day in three weeks. One of the sessions is an interactive and hands-on session on Chemical Reactions which will be directed by the Alchemist Club in th General Chemistry Lab (Boebel 301). The chemicals requested by the club students for leading the session are the following: Zn, Mg ribbon, AgNO3, NaCl, H2SO4, H2O2, MnO2 (catalyst), HCl, NaOH, and C3H8 (propane) to make methane and propane bubbles. As the lab manager, you must prepare a protocol sheet for the club students to follow that ensures that the demonstrations for each chemical reaction type are both safe (for club students and 6th graders) and meets allowable waste production limits. Immediately making it clear to my students that they will be responsible for creating the lab protocol, meaning they will need to know the technical aspect of the content, while also thinking about their audience and the best way to create value and manage risks.
Creating Value
- Identify unexpected opportunities to create extraordinary value
Providing real world relevance: The students are shown a picture and informed about the Laboratory Manager for the Chemistry department including some of the roles and responsibilities she has as the lab manager when she prepares the labs that the students will be attending during the semester for the Chemistry course. Given that this is someone who they will/have encountered already and is responsible for making sure they have everything they need for the labs, it addresses the "Why is this important or relevant?" questions.
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