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Simulator: Soccer Goal Sim1

Page history last edited by LFS 14 years, 3 months ago

Home > Teaching Tools > GeoGebra > Measurement and Geometry with GeoGebra > Soccer Goal Sim1

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 α of success for making a goal is at a maximum? 

THERE ARE 2 DIFFERENT SIMULATORS HERE - GeoGebra simulator    Scratch simulator

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

Click on the play button at bottom left of simulator or click & drag the slider point bottom to animate manually.
Find bottom when the angle α of success is a maximum. More directions below.

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)

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

InterActivity 2: Soccer Player Goal Simulator - Scratch 

Click on Go! to start the Player. Press Space to Stop Player. Adjust angle. Click on KickMore directions below.

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:
10-page materials for GeoGebra Simulator pdf and

2-page materials for Scratch Simulator pdf  or
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/or Scratch 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 6th 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. 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
Use Requires sunJava player

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