GeoGebra:
The Dynamic Math Software in K-12 Classrooms
(i) Know the scope of GeoGebra, i.e., what they can do with GeoGebra in the broad spectrum of mathematics,
(ii) Know where to go for more information.
(iii) Understand some key features of GeoGebra and use some tools of GeoGebra,
(iv) Develop GeoGebra applets, and
(v) Create html files on the fly of their projects, and
(vi) Create free websites
(vii) Upload applets on their websites
1. Introduction to GeoGebra with FAQ on GeoGebra and
a couple of demonstrations from the site http://prabir.pbworks.com:
8:30 to 8:50 am
2. Familiarization with GeoGebra interface: 8:50 to
9:50 am
1.
Algebra view
2.
Graphic view
3.
Spreadsheet view
4.
Input Bar: Use of commands,
functions, and special characters
5.
Menu Bar: Edit, View, Options,
Tools, Help
6.
Tool Bar: Brief overview on some
tools
7.
Context Menu: Object Properties
3. Hands-on practice with GeoGebra in five
sessions:
(a)
SESSION I: 10:00 to 11:00 am
1.
Start a New Window
2.
Draw different shapes: Point, Line, Segment,
Ray, Vectors, Polygons, Circle, Ellipse,
etc.
3.
Measure Angle, Area, and Slope
4.
Insert Text and Image
5.
Show and Hide objects
6.
Insert Check Box and link it to object(s)
7.
Use of Slider to dynamically change
independent objects
8.
Animation (manual and automatic)
(b) SESSION II: 11:00 to
Noon
Start a new project of drawing two
dynamic intersecting straight lines (Refer to Instructions).
1.
Input slopes, m1 and m2
and y-intercepts b1 and b2 in
the Input Bar.
2.
Input two straight lines y = m1x +
b1 and y = m2x + b2 in
the Input Bar.
3.
Create sliders for slopes and y-intercepts.
4.
Label the lines with their respective equations.
5.
Color the two lines with different shades.
6.
Change thickness of the straight lines.
7.
Use dynamic text for each straight line describing
specific conditions such as the lines being perpendicular and parallel to each
other.
8.
Check functionalities of various components such as
sliders, dynamic text boxes, equations of straight lines, etc.
Lunch break: 1 hour
(c)
SESSION III: 1:00 to 2:00 pm
1.
Create a new tool: A dimensioned perpendicular segment
from a point to a straight-line (Refer to Instructions).
2.
Use the new tool to determine areas of triangles,
parallelogram, rhombus, and trapezoid created in Session II.
3.
Compare the calculated areas with the areas given
by the Area tool.
(d) Session IV: 2:00 t0 2:30 pm
1.
Create your free website.
2.
Use
your personal or school email address. Follow instructions.
(e)
SESSION V: 2:30 to 3:00 pm
1.
Export GeoGebra project(s) made in Session II
and/or Session III to create html file(s) to upload on geogebratube.com.
It will require signing up at geogebratube.com (Refer to Instructions).
2.
Sign up at geogebratube.com.
3.
Upload html file(s) on your new website.
Coffee break: 10 minutes
4.
General discussion: 3:10 to 3:30 pm
(i)
Investigate different resources on the Internet for
further studies and help.
(ii)
Visit GeoGebra forum at http://www.geogebra.org/forum. Later
sign up at your convenient time.
(iii) Clarify
doubts.