Bonding models: Discrete molecules
1) Performance on the pre-lecture online quiz
2) Performance on the in-class activity (clicker scores or hand-graded worksheet)
Students generally score on average 70% or higher on the pre-lecdure quiz, and on average 70% or more of students correctly answer the in-class clicker questions.
This is a flipped classroom activity intended for use in a first semester general chemistry course. Students are expected to have prior knowledge in identifyng the difference between molecular and ionic compounds, understanding the conceptual framework for how covalent bonds form, and how to draw Lewis dot symbols for atoms, and how to determine the number of valence electrons for atoms.
The activity includes:
1) pre-lecture learning videos that guide students through learning how to draw valid Lewis structures, determining how to caculate the formal charge for atoms in molecular compuonds/Lewis structures, and using formal charge to determine which Lewis structure is most stable if multiple Lewis structures are possible for a given molecule;
2) pre-lecture quiz questions; and
3) an in-class activity that requires students to apply their knowledge of chemical bonding in drawing Lewis structures.
Acknowledgement: This material is based upon work supported by the National Science Foundation under Grant No. 1504989. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
Students should be able to:
a) draw Lewis structures of molecular compounds;
b) determine the formal charge of atoms in molecular compounds;
c) use formal charge to predict the most stable Lewis structure.
1) online test/quiz function in course management system
2) in-class response system (clickers)
Attached as separate file.
When I do this correctly, the students don't accidentally see something which may make immature students giggle.
I have had multiple colleagues tell me that this technique worked for them and saved them from repeating an embarassing classroom event.
The instructor will draw the bonding MO of dihydrogen without accidentally causing laughter in the class or self embarassment.
chalkboard or whiteboard
ability to adjust quickly just in case
I have come close to accidentally drawing the incorrect version of this diagram and I am able to stop myself quickly as illustrated in the instructions.
This is a collection of LOs that I used to teach a junior-senior seminar course on organometallics during Fall 2018 at Harvey Mudd College. There were a total of 9 students in the course. The Junior student (there was only one this year) was taking 2nd semester organic concurrently and had not takein inorganic (as is typical).