Chap 12: Catch the Fly!

Link: http://hotmath.com/hotmath_help/games/ctf/ctf_hotmath.swf

Linear Graphs - VMC

THE VENDING MACHINE 

The above shows a Vending Machine.

Basically there is an input and an output.

It is a one to one function.

1. What are the assumptions made in designing of the vending machine.

2. If a drink cost $1.50, draw a table of values to show number of bottles against cost.

    in the following format

   cost ($)          number of bottles       

    x                                y

3. Using a piece of graph paper, plot the graph of number of bottles again cost ($).

    That is vertical axis - number of bottles

               horizontal axis - cost ($)

    scale :   vertical axis - 2 cm - 1 unit

               horizontal axis 1 cm - $1

4. Record 3 observations that you obtained from the graph.

Linear Graphs

Analyse the following diagram - what do they have in common?

Post your responses as a comment.

diagram 1

diagram 2

diagram 3

LINEAR GRAPHS - GRADIENT

Key Questions

What is gradient?

What are the characteristics of a gradient?

How is gradient connected to cartesian Coordinate?

Gradient (Slope) of a Straight Line

The Gradient (also called Slope) of a straight line shows how steep a straight line is.

Click here for link

Activity and self exploration

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SUMMARY

LINEAR GRAPH

SELF DIRECTED / COLLABORATIVE ACTIVITY

Watch the following video and have a better understanding of:

.1 Cartesian Plane

.2 Coordinate system and ordered pairs

.3 Plotting coordinates for both tabular and graphical forms.

.4 Quadrants

Task

This is a collaborative activity.

Using Linoit (click http://linoit.com/users/nurjohari/canvases/Linear%20Graphs) post the key information about cartesian planes and coordinate system. 

video 1

Video 2

LINOIT activity

LINEAR GRAPHS - INTRO

INTRODUCTION

                                                   Task 1

A visitor to SST from one of the GCP schools wanted to know the direction from SST to NLB @ Clementi.

Without using any GPS and technological based tools provide a concise direction to the venue.

Conditions:

He is travelling alone and plans to walk to the destination.

You direction should bring him to the doorstep.

Post your direction as a comment in this blog

Link to Clementi Public Library

Task 2

With your group, brainstorm and suggesting a possible solution to the following scenario. Post your solution as a comment.

Scenario: You are lost at sea drifting aimlessly with water supply and a bar of magnet. Suggest how you could find direction to find land. What could be most useful a equipment for you to have at that moment, Why?