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PRODUCT DESCRIPTION
This free virtual lab activity from GigaPhysics.com helps students explore the differences between position vs. time and velocity vs. time graphs. Students learn how these graphs work by dragging a virtual caterpillar with their mouse, then comparing the graph of the caterpillar's motion to the target graph they were aiming for. Through this exploration students learn the major features of both types of graphs, and debriefing questions along the way reinforce what they discover.
This discovery lab lets students discover how to interpret position vs. time and velocity vs. time graphs by experimenting with the virtual motion detector. They simply drag the caterpillar, and they see the resulting graph as soon as they release the mouse button. Eight example graphs let them see the essential features of both types of graphs, and the questions in the activity guides help them distinguish the two. Feel free to reproduce the activity guide below for your classroom.
- Exploring Motion Graphs Activity Guide
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Find the Lab
■ In your web browser, go to www.gigaphysics.com, then click Virtual Labs, and finally
Exploring Motion
Graphs.
Part I: Explore the
Controls
■ Use your mouse and drag the caterpillar back and forth a bit. The caterpillar
will stay on the ground, so you can just worry about left and right.
■ Release the button and notice the red dots on the graph. These dots show how
you moved the caterpillar. You’ll learn to make sense of these dots in the rest
of the lab.
Part II: Position vs. Time Graphs
■ Set the Choose a graph menu to “Position vs. Time #1.”
■ You should now see a position vs. time graph on the screen. The vertical axis
shows where the caterpillar is, and the horizontal axis shows the time.
■ Drag the caterpillar, trying to
recreate the graph. (You won’t
see your results until you release
the mouse button.) Don’t worry
if you have to guess the first
time.
■ Does your graph look close to the example?
If not, keep experimenting until you figure it out.
What did the caterpillar have to do when the graph changed from an upward slope to
downward?
It had to turn around (Face towards the left) and start moving immediately.
What did the caterpillar have to do for the graph to return to the horizontal axis at
the end?
Move in the opposite direction (Towards the left) at almost same speed.
■ Now switch to “Position vs. Time #2” on the Choose a graph menu. Once again,
experiment until you are able to reproduce the graph.
■
What did the caterpillar have to do during the horizontal segments of the graph?
Stop for some time.
Continued on the next page…
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Exploring Motion Graphs Find the Lab ■ In your web browser, go to www.gigaphysics.com, then click
Virtual Labs, and finally Exploring Motion Graphs. Part I: Explore the Controls ■ Use your mouse and drag the caterpillar back and forth a bit. The caterpillar will stay on the ground, so you can just worry about left and right. ■ Release the button and notice the red dots on the graph. These dots show how you moved the caterpillar. You’ll learn to make sense of these dots in the rest of the lab. Part II: Position vs. Time Graphs ■ Set the Choose a graph menu to “Position vs. Time #1.” ■ You
should now see a position vs. time graph on the screen. The vertical axis shows where the caterpillar is, and the horizontal axis shows the time. ■ Drag the caterpillar, trying to recreate the graph. (You won’t see your results until you release the mouse button.) Don’t worry if you have to guess the first time. ■ Does your graph look close to the example? If not, keep experimenting until you figure it out. Success! The red dots nearly matc h What did the caterpillar have to do when the graph
changed from an upward slope to downward? It had to turn around (Face towards the left) and start moving immediately. What did the caterpillar have to do for the graph to return to the horizontal axis at the end? Move in the opposite direction (Towards the left) at almost same speed. ■ Now switch to “Position vs. Time #2” on the Choose a graph menu. Once again, experim ...
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