# Car Race Classroom Simulator/InterActivity

Click and drag the sliders to set the cars speed and starting position.

 Then click on the animation buttons: 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)
 Sample question for Level: Algebra 1 Problem:  Set RED CAR: Speed=15km/h and Start=24km and                       BLUE CAR: Start=0km. Question: If the cars meet in 4 hours, what is SPEED of BLUE CAR?    Use the activity to find your answer and then talk about the math. Answer A: Using the activity. Set the 3 sliders. Think about what it means to "meet in 4 hours". Find t=4 on the horizontal axis. Move the 4th slider (speed of blue car) until the lines intersect above t=4. See that the slider is at 21km/h. Answer B: Thinking about the math. Thinking: blue car has to "catch up" 24 km in 4 hours. This means it must go 24km/4h=6km/h faster than red car. The speed of red car is 15km/h. So the speed of blue car is 15km/h+6km/h=21km/h.
 Zip for offline use  This InterActivity needs ready-to-use in the classroom worksheets so: Please write me with questions/ideas for using this activity (include grade level).

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