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Pushing the Envelope of Instructional Technology: Handheld Computers and Wireless Networks

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eBook Chemistry Textbook. Chemistry: The Central Science 8th Ed. ... eBook Chemistry Textbook. Fully illustrated. Recently added problems, appendices, links ... – PowerPoint PPT presentation

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Title: Pushing the Envelope of Instructional Technology: Handheld Computers and Wireless Networks


1
Pushing the Envelope of Instructional Technology
Handheld Computers and Wireless Networks
  • Charles R. Ward
  • Department of Chemistry
  • University of North Carolina at Wilmington

2
Outline of Presentation
  • Historical Background
  • Numina I
  • Brief Overview of Handheld PC
  • Classroom Use
  • Pocket PC vs. Handheld PC
  • Numina II
  • Pocket PC Applications
  • Conclusions

3
History of Project Numina I
  • Multi-disciplinary team that has been working
    together on technology projects since 1990.
  • The team predicted that small handheld computing
    platforms would be ubiquitous by 2003.
  • Funding obtained from Pearson Education and UNCW
    to explore the use of handheld computer
    technology for teaching science and mathematics.

4
HP Jornada 720 Handheld Computers
  • StrongArm CPU 206 MHz
  • 32 MB 48 MB of RAM
  • WinCE (Word, Excel, PowerPoint, Explorer)
  • Hyperchem, FTP, SRS (SWATT), Textbook

5
Cisco 340 Wireless Network
  • 802.11b Standards-based network
  • 150 range around access point (indoors)
  • 11 Mbps throughput
  • Wireless access throughout entire building

6
Handheld Computer Distribution
  • Computers distributed in class from carts
  • 32 computers on each cart with power supplies
  • The contents of each cart can be distributed and
    returned in under 6 minutes

7
eBook Chemistry Textbook
  • Chemistry The Central Science 8th Ed.
  • Prentice-Hall Publishers
  • HTML format entirely editable

8
eBook Chemistry Textbook
  • Fully illustrated
  • Recently added problems, appendices, links
  • Access to Prentice-Hall Web site

9
GraphData Graphing for Pocket Excel
  • Pocket Excel has no graphing capability
  • GraphData uses data copied to the clipboard from
    within Excel
  • The graphs from GraphData can be pasted into
    Pocket Word

10
Pocket Hyperchem from Hypercube
  • Pen-based interface
  • MM and Semi-Empirical Calculations
  • Standard functions for general, inorganic, and
    organic chemistry

11
General Chemistry
  • View and rotate molecules (pre-built)
  • Measure bond angles and bond lengths
  • View molecules in different renderings

12
Organic and Inorganic Chemistry
  • Build molecules
  • Optimize geometries
  • Explore properties of molecules

13
  • Organic Chemistry
  • Study the nature of the strain in methyl
    substituted cyclohexanes

mono
hexa
14
Inorganic Chemistry
  • Generate the MO diagram for BF3 and study its
    Lewis acid-base chemistry

15
Exercise 1 Experimental group used Hyperchem to
rotate molecules and measure bond angles
16
Exercise 2 Control group used the Jornadas to
view this as a Web form in color, but with no
rotation capability
17
Sample Quiz Questions
18
Results
T-Test for Subtotal 1 X1AVG 4.3 X2AVG
3.7 N1 65 N2 49 t 2.27 df
112 p (two-tail) 0.025
VSEPR Questions
19
Results
T-Test for Subtotal 1 X1AVG 4.3 X2AVG
3.7 N1 65 N2 49 t 2.27 df
112 p (two-tail) 0.025
T-Test for Subtotal 2 X1AVG 0.91 X2AVG
0.94 N1 65 N2 49 t -0.24
df 112 p (two-tail) 0.810
Gas Law Questions
VSEPR Questions
20
SWATT Student Response System
  • Interactive classroom questioning
  • Completely Web-based system
  • Student feedback is anonymous
  • Data are available for later analysis

21
SWATT Student Response Pad
  • Student view is synchronized with classroom view
    through the Web-based database
  • IP address of Jornada is used to prevent multiple
    responses to the same question
  • Student feedback is anonymous

22
SWATT Interfaces Under Development
23
Which one of the following statements about a
chemical reaction at equilibrium is correct?
  • The concentrations of reactants and products are
    equal.
  • The rates of the forward and reverse reactions
    are equal.
  • No more reactants are converted to products.
  • d) The concentrations of reactants and products
    change with time.

24
Which one of the following statements about a
chemical reaction at equilibrium is correct?
  • The concentrations of reactants and products are
    equal.
  • The rates of the forward and reverse reactions
    are equal.
  • No more reactants are converted to products.
  • d) The concentrations of reactants and products
    change with time.

25
What is the half-life of the following
first-order reaction?
a) 2 s b) 10 s c) 5 s d) 20 s
26
What is the half-life of the following
first-order reaction?
a) 2 s b) 10 s c) 5 s d) 20 s
27
What is the value of the equilibrium constant (K)
for this reaction?
a) 9.0 b) 1.0 c) 0.90 d) 0.11
28
What is the value of the equilibrium constant (K)
for this reaction?
a) 9.0 b) 1.0 c) 0.90 d) 0.11
29
Pros and Cons of Each Platform
  • Keyboard
  • Size Weight
  • Features of OS
  • Expandability
  • TFT LCD Display

30
Pros and Cons of Each Platform
  • Handheld PC has backlit TFT display
  • Pocket PC has backlit / reflective TFT display
  • Pocket PC can be viewed in direct sunlight

31
Project Numina II
  • Internal seed grant obtained to study the Pocket
    PC as an alternative to the Handheld PC.
  • Is it possible to do serious chemistry on a
    Pocket PC?
  • This depends on both the hardware and the
    software that are available.

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43
Software Development for Numina II
  • Molecular Animator (states of matter, vapor
    pressure, phase diagrams, etc.)
  • Kinetics Simulator
  • Equilibrium Simulator
  • Data Analysis Module
  • Data Acquisition Software Hardware

44
The Ultimate Device?
  • Horizontally oriented Pocket PC with detachable
    keyboard.

45
  • Acknowledgements

Project Funding
  • National Science Foundation
  • Pearson Education
  • UNCW
  • College of Arts and Sciences
  • Division of Academic Affairs
  • Information Technology Systems Division

46
Acknowledgements
Collaborators
  • Department of Chemistry
  • Dr. Jimmy Reeves
  • Dr. David White
  • Dr. Barbara Heath
  • Ms. Jennifer Bishoff, Graduate Student
  • Ms. Rebecca Popovec, Undergraduate
  • Ms. Jenny Wright, Undergraduate
  • Ms. Gina Taylor, Undergraduate
  • Ms. Katy Magolan, Undergraduate

47
Acknowledgements
Collaborators
  • Mathematics and Statistics
  • Dr. Gabriel Lugo
  • Dr. Russ Herman
  • Ms. Valerie Kepley, Undergraduate
  • Computer Science
  • Dr. Ron Vetter
  • Mr. Steve da Silva, Undergraduate
  • Mr. Eli Weinstock-Herman, Undergraduate

48
http//aa.uncwil.edu/numina
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