Biosorption is a method that can be used for the removal of pollutants from wastewater, especially those that are not easily biodegradable. This experiment uses citrus fruit peels as part of a iodometric titration to conduct a wastewater treatment binding copper.
Science Practice: Obtaining, Evaluating, and Communicating information
This strategy has been very helpful in establishing relevance to topics taught and in making connections between topics taught within a unit. It also provides a way for students to ask questions and make written explanations of phenomena, which are “Science and Engineering Practices” of NGSS.
Given a guiding question, students determined what they wanted to test, did the experiment and got their CER boards ready for review. Instead of a regular argumentation session, we had a glow and grow session, where students had to provide positive and negative feedback for each board.
The summer is an ideal time for reflection, a time to process and grow as an educator. This summer I was fortunate enough to attend the POGIL® National Meeting at Washington University in Saint Louis as well as assist as one of the facilitators at the Northeast Regional Meeting at Manhattan College. While there are numerous ways to spend your summer vacation, I wanted to share some reasons why POGIL® draws me in time and again.
Whether you are looking to add a bit more scientific inquiry to your labs or simply looking for a great stoichiometry lab that can be added to your collection, I encourage you to try something like this with your students!
I took a tip from the elementary school teachers and created literacy stations to help increase the amount of reading and writing in my classroom. Literacy centers support students by arming them with the tools to utilize when examining text documents, charts, graphs, pictures etc. to take the content and make it comprehensible. Here I will provide examples of literacy centers I utilize in my classroom.
I try to examine activities an multiple levels. First on the list, I want to know if my students will be engaged and learn something. Second, how difficult is it for me as a teacher to actually pull it off? One of the most important questions...are the students learning chemistry or just having fun? This is the first year I have attempted the following activity. Students were engaged in the real world connection, they asked questions, it transitioned into some chemistry concepts and even some parents got involved. The activity involved acid, bases, pH and food.
I will share how I use the Target Inquiry activity, Change You Can Believe In. I have realized that I need to include particulate models within the assessments after the lab to fully evaluate my student's conceptual understanding.
I think this experiment provides a fantastic vehicle to involve students of all ages in small, hands-on and exploratory research projects. Like many others, my students and I have investigated various aspects of this interesting fountain.
Whether you are introducing collision theory or something more demanding like reaction order, the reaction between sodium thiosulfate—Na2S2O3 and hydrochloric acid can provide a consistent, accurate, and engaging opportunity for investigating these topics.