A Build your own Simulator Kit for Students - Everything Included!  (links are at page bottom)

Statement of the Problem: A soccer player is running down the field in straight line parallel to the sideline. Where is he when the angle for making a goal is at a maximum?

InterActivity 1:Soccer Player Goal Simulator 1 - GeoGebra Watch Mathcast

     Click on the play button (bottom left) or click & drag the slider point bottom to animate manually.
     Find bottom when the angle α of success is a maximum.   More Directions
  • As you click and drag the slider point bottom towards the left, notice that the angle α of success increases and then it starts to decrease. Move the slider slowly and find the value of bottom that makes the angle α of success a maximum.

(With a goal size g=1 and a parallel side1=2.1 from the lower goal post, the maximum angle α is when bottom=2.55.)

  • To reset: click on in upper right corner.
  • To move a slider to step-by-step, click on the slider point once without moving. It will glow. Use left/right arrow keys.
Double-click to open the GeoGebra file on your computer with all menus and tools.
  • To save, select command: File -> SaveAs.
  • To move a slider to an exact value either:
    • In the Input Bar (bottom left) type: variable=value (e.g. bottom=2.55) and hit Enter or
  • To see the Algebra View, select command: View -> Algebra view
  • To see the Construction Protocol, select command: View -> Construction Protocol
Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now)

InterActivity 2: Soccer Player Goal Simulator - Scratch (below)

     Click on Go! to start the Player. Press Space to Stop Player. Adjust angle. Click on Kick. More Directions

1. To change side distance, first adjust slider Start. Then click on
2. To return ball to player and move down the field - Click on Go!
3. To try kick again, first adjust slider Angle - Click on Kick.

View Directions: GeoGebra / Scratch
10-page printable materials for Basic GeoGebra Simulator pdf   and

2-page printable materials for Scratch Simulator pdf
12-page printable Word file with all:   doc

(everything opens in new windows)
Download Zip

Zip includes directions, images, good questions with answers and completed simulators. Requires freeware GeoGebra and sunJava player.

Metadata for IA1         
Global Simulation of a Soccer Player Kicking Ball for Goal
Brief InterActivity-Build your own Simulator of a Soccer
Grade 6 and up
Strand Geometry and Measurement
Standard CA6MG-2-3, ACT GR20-23, ACT PF20-23, ACT ME20-23,
Keywords angles, triangles, soccer, simulator, geogebra, scratch, dynamic, freeware, applet, offline, online
Comments 1. Just getting started with this simulator. Please contact me if you have problems or ideas.

2. This is a build-upon simulator; students can add more features and math as they progress.

Credits http://mathforum.org/sketchpad/goal.angle.html
Download Download Zip
Author LFS - contact
Type Freeware - Available for Offline Use - Translatable (html)
Use Requires sunJava player

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Page last modified on September 17, 2009, at 01:54 PM