TITRATION Made Easy!
No chemistry class would be complete without a titration lab. In this Zip Lab, students will enjoy determining the % acetic acid in vinegar while learning basic titration laboratory techniques.What’s a Zip-Lab? ZIP-Labs are designed to be completed within a 60 minute time frame but can be expanded to fit into greater time frames as well. This is usually achieved by reducing the amounts of chemicals used, number of steps involved, and the amount of time devoted to each step. The focus of the lab is on the overall scientific principle and less on accuracy/precision. Students are asked to record data as accurately as possible given the time allowed, but they are given sample data that will yield good results. Students are asked to compare their results to the idealized results. They are then asked to think about how the limitations and simplifications affected their results in hindsight.
I realize this is not a perfect solution and I’m not recommending that all labs be conducted this way, but I do feel sometimes student can’t see the forest through trees when the laboratory procedures are too complex or there just isn’t enough time to complete the lab and obtain meaningful results.
During ZIP-Labs, I ask students to focus on one or two chemical principles and/or skills. I find that students are often more apt to understand the sources of error, ways they could perfect their results, and the overall chemical principles as a result.
Each Zip Lab includes potentially much more than any teacher will use at the particular grade level he or she may teach. However, it is my hope that teachers, and students, at lower grade levels will gain valuable insight by looking ahead to see how their teaching/learning will be applied in the future. While teachers and students at higher grade levels can reflect on topics that they should have learned in earlier grades. It is my hope that students see their education as a continuum rather than a series of disconnected and random topics.
Zip Labs include diagrams and illustrations that I hope are appealing to a wide range of ages. However, teachers can choose to omit them if they like. Also included is a Common Core ‘Depth of Knowledge’ and grade level range ‘sliding’ indicator to help students visualize the relevance of their work. You also get Data Collection Info-Graphics and conceptual drawings of the processes involved.
Titration Lab Lab: What you get…
Activity cover sheet
Diagram of apparatus
Info-Graphic Data Tables (very cool!)
Laboratory conclusions and analysis worksheets
-Depth of Knowledge & Grade Level Slide Indicator Graphics
This unit activity meets or exceeds 21st Century and STEM learning expectations, and Common Core learning outcomes. Note: although ZIP-labs fulfill many CCSS specific CCS standards are not listed because ZIP-labs are designed to be used over many graded levels so the specific CCSS may be different depending upon these factors. For a list of CCSS in your state please visit- www.corestandards.org
Working to change STEM to STEAM.