1. Using Visual Instruction Traditional Content Delivery
CH 111
GENERAL CHEMISTRY
L 06-A
Chemical Bonding
Using Visual Instruction
To Improve
Traditional Content Delivery

2. CHEMICAL BONDS GENERAL CHEMISTRY Chemical Bonding
CH 111
GENERAL CHEMISTRY
L 06-B
Chemical Bonding
CHEMICAL BONDS
Lewis Electron Dot Symbol The symbol of an element surrounded by its outer electrons.

3. B Al CHEMICAL BONDS GENERAL CHEMISTRY Chemical Bonding
CH 111
GENERAL CHEMISTRY
L 06-C
Chemical Bonding
CHEMICAL BONDS
Lewis Electron Dot Symbol The symbol of an element surrounded by its outer electrons. B Al

4. B Cl Al F CHEMICAL BONDS GENERAL CHEMISTRY Chemical Bonding
CH 111
GENERAL CHEMISTRY
L 06-D
Chemical Bonding
CHEMICAL BONDS
Lewis Electron Dot Symbol The symbol of an element surrounded by its outer electrons.
B Cl
Al F

5. B Cl C Al F Si CHEMICAL BONDS GENERAL CHEMISTRY Chemical Bonding
CH 111
GENERAL CHEMISTRY
L 06-E
Chemical Bonding
CHEMICAL BONDS
Lewis Electron Dot Symbol The symbol of an element surrounded by its outer electrons.
B Cl C
Al F Si

6. B Cl C O Al F Si S CHEMICAL BONDS GENERAL CHEMISTRY Chemical Bonding
CH 111
GENERAL CHEMISTRY
L 06-E
Chemical Bonding
CHEMICAL BONDS
Lewis Electron Dot Symbol The symbol of an element surrounded by its outer electrons.
B Cl C O
Al F Si S

7. e. H3C CH3 ethane f. N2 nitrogen
CH 111
GENERAL CHEMISTRY
L 06-F
Chemical Bonding
Your Turn
Draw the Lewis Structure for each of these molecules,
each of them follow the octet rule :
a. Br2 b. I2
c. CCl2F2 d. O3 ozone
e. H3C CH3 ethane f. N2 nitrogen
A bond between two atoms is composed of electrons.

8. Note the haphazard way the concepts are arranged.
CH 111
GENERAL CHEMISTRY
L 06-G
Chemical Bonding
Conclusions
Note the haphazard way the concepts are arranged.
Relations between the concepts are embodied
in the sequence of presentation (implicit)
Much of what is said is forgotten
after seeing the slides

9. Visual Instruction GENERAL CHEMISTRY Chemical Bonding
CH 111
GENERAL CHEMISTRY
L 06-H
Chemical Bonding
Visual Instruction
A trial in a lecture Spring 2008
The following are my lecture notes
These notes were written on black boards (3) in a large lecture hall (80 students)

10. CH 111
GENERAL CHEMISTRY
L 06-I
Chemical Bonding

11. CH 111
GENERAL CHEMISTRY
L 06-J
Chemical Bonding

12. CH 111
GENERAL CHEMISTRY
L 06-K
Chemical Bonding

13. CH 111
GENERAL CHEMISTRY
L 06-L
Chemical Bonding

14. CH 111
GENERAL CHEMISTRY
L 06-M
Chemical Bonding

15. Students learned relations between chemical concepts
CH 111
GENERAL CHEMISTRY
L 06-N
Chemical Bonding
Conclusions
Students learned relations between chemical concepts
Seeing the sequence allowed the construction of a mental model which could be used as a thinking tool
Some students commented the “light came on”

16. GENERAL CHEMISTRY Chemical Bonding Conclusions mental models
CH 111
GENERAL CHEMISTRY
L 06-O
Chemical Bonding
Conclusions
mental models
composed of referents
relations
results
rules/syntax
operations

17. GENERAL CHEMISTRY Chemical Bonding Mike Briggs m.w.briggs@iup.edu
CH 111
GENERAL CHEMISTRY
L 06-P
Chemical Bonding
Mike Briggs