Student teachers at Ball State University are required to complete an in-depth unit long data driven analysis of their student teaching called Learning Assessment Model Project (LAMP). I chose to run the project during the stoichiometry unit. Stoichiometry is a unifying topic of chemistry. It synthesizes previously taught topics of writing chemical formulas, calculating molar masses, performing molar conversions, and balancing chemical reaction equations so that students may apply prior knowledge to its fullest use. Stoichiometry is rigorous and challenging for students. My aim was to make this topic both accessible and useful for my students by relating it to their everyday lives. We chose the stoichiometry unit to run our LAMP project in as most students, except possibly those who have taken integrated chemistry and physics, have no experience with stoichiometry. We wanted to see the direct impact that our teaching had upon students. The following is a summary of the project, its outcome and conclusions drawn from it.
Tag Archives: lab
Solution Riddles
I adapted the http://espace.bsu.edu/akhouck/2015/10/08/find-me-a-solution-please/ lab from Chemistry II for the Chemistry I students to use as a lab in preparation for the end of unit lab practical exam that some students had chosen to take. Aside from reinforcing solution chemistry calculations, this lab offered more in class practice using volumetric glassware and their associated techniques. A problem arose when each lab group required 3 volumetric flasks and our room only had a total of 12 flasks available for use. In order to circumvent extra large lab groups, but still keep students engaged, I composed a nine question problem set involving molarity, molality and dilution caluclations. In order to solve the problems, students had to answer riddles and find clues hidden around our room. At each location students solved a particular problem and then moved on to find a the next clue to solve.
Authentic Assessment: Solution Exam Practical
I always enjoy any activity that involves authentic laboratory work, so when it came time for the solutions unit in Chemistry I, I decided to allow students a choice for their end of unit assessment. Either assessment was worth the same number of points, but there would be an option of either completing a traditional paper and pencil test, or performing a lab practical exam that involved making actual solutions. A rubric was constructed to grade the outcome of the practical: Solution Lab Practical Rubric as well as a modified testing instrument: Solutions Practical Exam
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Balancing Chemical Reaction Equations Using Beads
Kinesthetic activities are one of my favorite ways to engage students in their learning. We utilized several methods in modeling the art of balancing chemical reaction equations, but one of my favorite activities was balancing reactions using beads.
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Silvering of Chemis-Tree Ornaments Using Tollen’s Test
Tollen’s Test is a laboratory test used to detect the presence of an aldehyde or keytone functional groups by an oxidation reaction. The result of a positive test is a precipitation of silver on the inside of the reaction vessel.
All three of our courses used Tollen’s Test to silver the inside of Christmas tree ornaments during finals week using this technique. It was a welcomed break from the rigor of finishing the crunch of assignments for the semester, and a nice memento from our time together. I do understand that this is a Christian holiday, and that we must be culturally responsive to all religions. As such, this may not be an activity appropriate in all settings, or may need to have vessels to silver for students who do not celebrate Christmas.
InTASC standards 5-7-8 were put to work on this task as content was planned for and applied. HLPs 6 & 13 were also used by the station work and partners that were integral to the success of this lab. Students really enjoyed completing this lab, and it was a welcomed break from the hectic bustle of Finals Week. Lots of them decorated the ornaments as gifts, or as mementos from our time together at Alexandria.
Science Behind the Thanksgiving Day Table
Oftentimes, the last school day before a break is a day of lost instruction. My goal in forestalling this before Thanksgiving was to plan a lesson based around the science of things found on a Thanksgiving Day table. Continue reading Science Behind the Thanksgiving Day Table
Reading Fix-Ups Strategies for Better Lab Experiences
Mr. Smith talks to our students about reading techniques on a regular basis. We have only a classroom set of textbooks for Chemistry I, so we don’t request required reading of them very often. However, we do ask them to preview a chapter after an exam, or when there is time after laboratories. When we ask students to read the textbook, we give them specific techniques with which to preview the text:
1) Look at the pictures and figures first.
2) Read any boldface vocabulary words.
3) Skim for key phrases/vocabulary.
4) Read for content.
We give them a specific reading technique, because reading a science text is not as straightforward or easy, as reading for leisure is.
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Find Me a Solution, Please
The origin of this activity stemmed from myself graduating with a degree in chemistry, without ever calculating or making a 1.0 M solution. I felt that this was a disservice to myself, and vowed that my students wouldn’t have the same experience.
Quality Control of Al Foil Inquiry Lab
When our Chemistry I classes were initially studying the unit of the mole, I wanted to find an activity using real life materials to further relate the mole concept. Initially I thought of using aluminum foil, and found a quality control lab that I liked, so I modified it to include mass measurements and mole conversions. Click here for the complete file download of this activity.
Mole Madness Activity
What’s in a mole? 6.022 EE 23 atoms/molecules for sure, but what does a mole look like? That depends on the molar mass of a given compound. The goal of generating this particular activity was to have students calculate the molar mass of three common household compounds, sugar, baking soda and sodium chloride, and then to measure out the same number of moles of each compound and visually compare the amounts of each compound to see how much space a given amount of moles occupies.