# Travel Graphs

Using travel graphs to describe position

How can you describe your position? What happens when you move?

Can you describe this movement?

This is a really fun practical activity that will get you to do just that.

Students using a motion sensor to track their 'journey' and reproduce travel graphs.

## Part A - Practical

In the activity below, the idea is to try and reproduce the journeys that were made by the person who recorded these journeys in the first place. The graphs describe the position of a person as time passes. The journeys are made over a few seconds and a few metres.

### With Motion Sensors

If you have Vernier Motion Sensor then you will be able to have fun seeing how your journeys compare (see Teacher notes). These are really easy to set up. Just plug the motion sensor into the USB port of your laptop and off you go

• You can find some simple instructions about using the Motion sensor
• Ignore the squiggles (they are often due to noise interference).
• Copy and paste your graphs underneath your teacher’s graphs then write a description of the journeys giving details of any important details. An editable version of the worksheet is provided here.

### Without Motion Sensors

It is possible to complete the practical part of this activity without the motion sensors. Here are a few suggestions of how this might work.

1. At the front of the class, the teacher or a student volunteer produces a journey that they think reproduces one of the journeys. The students then decide which of the graphs best represents this journey.
2. As above, but in pairs.
3. A graph is displayed on a screen at the front of the class. A volunteer is asked to try and reproduce the journey. Students discuss whether the journey represents that of the graph. The journey could then be refined.
4. Students could work in pairs to play a guessing game. Player 1 looks at a graph then makes a journey. Player 2 draws a graph of the journey. They discuss whether their graphs match up.

## Part B - Speed vs Time

In this second activity students are asked to make the link between distance-time graphs and speed-time graphs.

• This is a matching activity.
• Print out and cut up the graphs from this sheet.
• Match a graph with a number (distance-time) with a graph with a letter (speed-time).
• Some of these graphs have been left blank for you to complete!
• As an extension, students could find formula for some of the graphs.

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