5-FAC-02

Outcomes

• Pupils should be able to sketch, draw and interpret a range of distance time graphs.
• Pupils should understand the significance of average speed versus instantaneous speed.
• Pupils should be able to use and recall the relationship <math>avg speed=distance moved/time taken</math>
• Pupils should be able to link the equation above to the orbital speed of planets.
• Pupils need to recall the circumference of a circle equation and the meaning of the term Time Period.
• Pupils should be able to use the relationship

<math>v= (2xpixr)/T</math>

Specification References

• 1.2 understand and use distance-time graphs
• 1.3 recall and use the relationship between average speed, distance moved and time: <math>avg speed = distance moved/time taken</math>
• 1.33 use the relationship between orbital speed, distance moved and time: orbital speed = (2 x pi x orbital radius)/time period or <math>v= (2xpixr)/T</math>

Starter

• Using a motion sensor and Making Distance-time Graphs sheet.
• The pupils are presented with a range of distance time graphs and are asked to act them out infront of the class. The middle column is for the pupils to describe in words how they produced the distance time graph.
• The last coloumn will be used in the next lesson when they are asked to link a distance-time graph to a velocity-time graph.

Main Body of Lesson

Sketching Distance-time Graphs

• Go through the Distance-time Graph Powerpoint which prompts them to create a distance-time graph. It goes in steps as they sketch a scenario on a distance-time graph. Portions of the graph can be labelled to better describe what is happening in each section. This begins to show the significance of the gradient of the graph and how this is linked to speed.
• Hand out the Distance-time Questions sheet. This can be done in class and be corrected together. This allows calculations of gradients to find the speed of the vehicles at different parts of the journey. This recaps on instantaneous speed and average speed again.

Homework

• Distance-Time Graphs and Orbital Speed question sheet

Additional Information

Resources Required

• Motion sensor and large board
• Turntable with three different coloured balls tied at different radii.
• Globe with two plasticine people stuck at equator and on England. Do we have one that turns by itself?
• Question for Ed- Can a rotational sensor be used on the turntable or be used to rotate balls in horizontal circles?

Textbook References

• None

Website References

• None

Skills Addressed

• Obtaining

Notes

• None

Forces & Matter Outline

Forces & Matter