At the end of this lesson, you will be able to...

* define average, instantaneouse and constant speed
* calculate average speed
* read and draw distance-time graphs
* design a lab to determine an average speed of a car

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What is Speed?

Animation: Types of Speed

1. Read ebook Chp. 8, p.220, 221, 223
2. What is
-  speed,
-  constant speed,
-  changing speed,
 - average speed and
 - instantaneous speed?

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Reminder Conversion Factors and Measurement (Game)

Measurement Game

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How to Calculate Speed?

In this lesson you will lear how to calulate average speed.

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Formula Triangle or "Magic Triangle"

If you want to calculate the time, you cover ‘time’ and observe that distance appears above speed, so you calculate time from distance divided by speed.
To calculate speed, you cover ‘speed’ and observe that distance appears above time so you divide distance by time.
For calculating distance, you cover ‘distance’ and note that time is alongside speed, so you multiply the two together.

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Distance-Time Graph

Football Distance-Time Graph Animation

Helicopter

Activity
1. Watch the animation step by step
2. Fill in the table to record the key points from each level.
3. For levels three-six, sketch the graph carefully.

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Ticker Tape Lab

The purpose of this lab is to calculate the average speed of a toy car by using a ticker tape timer.

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Update your Popplet

1. Read and follow the instructions of the assignment
2. Create a new box and name it Speed, Distance and Time
3. Create three subheadings and name them:
    - Types of Speed (definitions)
    - Calcuating Speed (formula average speed, magic triangle)
    - Distance-Time Graph (purpose, slope)

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