hong-chang liang - chemistry

Overview of Technology-Based Additions to Chem 200/202 (General Chemistry I)


“Innovation” #1: Showed More Animations During Lectures



Intended to address the following issues:

e) Aptitude in basic calculations does not equal mastering key concepts





f) Molecular shapes often difficult to visualize, even for students who ace other sections of General Chemistry





f) Molecular shapes often difficult to visualize, even for students who ace other sections of General Chemistry

g) Boredom….


“Innovation” #2: Used Horizon Wimba for Real-Time, Archivable, Virtual Office Hours and for Recording ReviewSessions



Intended to address the following issue:




Most students do not come to my office hours, either dueto shyness or laziness, or because their schedules do not allow it.




Most students do not come to my office hours, either dueto shyness or laziness, or because their schedules do not allow it. Virtual office hours provide more anonymity andflexibility for the students.




Most students do not come to my office hours, either dueto shyness or laziness, or because their schedules do not allow it. Virtual office hours provide more anonymity andflexibility for the students. Students can also replay sections that are giving them the most trouble.

Assessments of Student Attitudes

Cross-Tab Label0 / 512

41%46%

10%

0%3%

1 2 3 4 5

Viewing animations in class

1. Made chemistry much easier to understand

2. Made chemistry slightly easier to understand.

3. Didn’t change how I learned chemistry

4. Made chemistry slightly harder to understand

5. Made chemistry much harder to understand


44% 43%

11%

1% 1%

1 2 3 4 5

Viewing animations in class

1. Made chemistry much more interesting

2. Made chemistry slightly more interesting

3. Didn’t change my interest in chemistry

4. Made chemistry slightly less interesting

5. Made chemistry much less interesting


40% 38%

15%

1% 3%

1 2 3 4 5

If I had access to chemistry animations online

1. I would make them an integral part of my study process because they’re very helpful

2. I would make them a small part of my study process because they’re somewhat helpful

3. I’m not sure if I’ll use them or not4. I probably wouldn’t use them much

because they are not helpful5. I would avoid them like the plague

because they actually hurt instead of help


10% 9%1%

80%

1 2 3 4

I found the virtual helproom

1. Very helpful2. Somewhat helpful3. Not helpful at all4. Can’t say because I’ve

never used it


41%

33%

9% 10%7%

1 2 3 4 5

If I had a choice between a “traditional” chemistry course (such as this one) and a “high-tech” course with 1/4 to 1/2 of

the lectures replaced by interactive web assignments and animations, I would:

1. Definitely sign up for the “high-tech” course

2. Probably sign up for the “high-tech” course

3. Not sure4. Probably stick with the

“traditional” course5. Definitely stick with the

“traditional” course

Future Plans for “Hybrid Course”

Sample Calculation Problem

Given the unbalanced reaction below and using the Ideal Gas Law, at 25 oC and 1.0 atm, how much NaN3 would be required to generate 73 L of N2 gas?

_ NaN3(s) _ Na(s) + _ N2(g)



2 NaN3(s) 2 Na(s) + 3 N2(g)

7) Balance the reaction



2 NaN3(s) 2 Na(s) + 3 N2(g)

7) Balance the reaction8) Calculate using PV = nRT how many moles of N2(g) will

occupy 73 L of space at 1 atm and 25 oC



2 NaN3(s) 2 Na(s) + 3 N2(g)


occupy 73 L of space at 1 atm and 25 oC9) Calculate the molar mass of NaN3



2 NaN3(s) 2 Na(s) + 3 N2(g)


occupy 73 L of space at 1 atm and 25 oC9) Calculate the molar mass of NaN3

10) Using stoichiometry, calculate the amount of NaN3

Who cares?!? It’s soooo tedious and boring!It has nothing to do with me….

hong-chang liang - chemistry

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