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

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*

*

*

**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## 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?

**Reminder Conversion Factors and Measurement (Game)**

**How to Calculate Speed?**

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

**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. |

## Distance-Time Graph

Football Distance-Time Graph Animation

Helicopter

2. Fill in the table to record the key points from each level.

3. For levels

**1. Watch the animation step by step**

Activity

Activity

2. Fill in the table to record the key points from each level.

3. For levels

**three-six**, sketch the graph carefully.## Ticker Tape Lab

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

**Update your Popplet **

1. Read and follow the

2. Create a new box and name it

3. Create three subheadings and name them:

**instructions**of the assignment2. 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)

- Calcuating Speed (formula average speed, magic triangle)

- Distance-Time Graph (purpose, slope)