A Learning Activity is a strategy a teacher chooses to actively
engage students in learning a concept or skill using a digital tool/resource.
You may save this Learning Activity to your hard drive as an .html file by
selecting “File”,then “Save As” from your browser’s
pull down menu. The file name extension must be .html.
Phase:
During/Explore/Explain
Activity:
Explore:
After a starter activity to engage the student, the teacher will introduce the PhET simulation using a projector or interactive smart screen. The teacher should click on items to show the students a basic use of the simulation so that they are not intimidated by learning new concepts using a digital simulation.
Then, the teacher will tell the students that they are going to use a computer simulation to gather data that they will use to describe the scientific concepts of acidity and basicity. The teacher will give the students either a digital or hard copy of the handout. The teacher will explain that the students will work on their own to gather data that they will use to create their own definition of acid, base, indicator, and pH scale. The teacher will explain that each student will have 20 minutes to explore the simulation and answer the questions on their handout. During the activity, the teacher will circulate around the classroom and monitor progress. The teacher should note any misconceptions students demonstrate to redirect their thoughts later during the debrief/class discussion during the explain/elaborate portion of the lesson.
Assessment Strategies:
Formative (informal) assessment:
During the simulation, the teacher will use student answers on the handout to gather data on misconceptions to address in the explanation of the lesson at the end of the activity. During the "Think, Pair, Share," the teacher will use student discussion and responses on the poster to note any additional misconceptions that need to be corrected.
Summative (formal) assessment:
The teacher may use the student answers on the handout as a summative grade for the simulation. However, since these answers are discussed in class, a different summative assessment would likely be a more accurate indicator of what individual students know. A suggestion for a final assessment can be found in the variation tips below.
Advanced Preparation:
The teacher will need to ensure that students have access to a computer with internet access before the lesson. Since the simulation is an HTML simulation, it will work on Chromebooks as well as other laptops in the web browser. Always test websites before you attempt to use them in class in case they are blocked by your school filter.
The teacher should also complete the simulation so that they are familiar with the operation and capable of helping students when they are "stuck."
The teacher should also make copies of the handout, if necessary.
Variation Tips (optional):
Since the answers on the handout are discussed in class, the handout is more of a formative assessment to gauge what the students know at the end of the simulation. A summative assessment could be given to each student individually in the form of a quick Quizizz game like the one found here.
For more mature and advanced students in chemistry, the teacher can modify the handout to make the questions and exploration more rigorous. The teacher can introduce additional terms to the students like hydronium ion, hydroxide ion, neutral, etc.
This activity is meant to introduce the concept of acids and bases to students. An acids and bases lab would be an excellent follow-up activity to allow students to use the skills that they learned in the simulation to actually test the pH of different substances in the lab and classify the substances as acids or bases.