/
vms http://www.mathsisfun.com/fractions.html vms http://www.mathsisfun.com/fractions.html

vms http://www.mathsisfun.com/fractions.html - PowerPoint Presentation

kittie-lecroy
kittie-lecroy . @kittie-lecroy
Follow
439 views
Uploaded On 2016-11-26

vms http://www.mathsisfun.com/fractions.html - PPT Presentation

Year 8 Mathematics CoOrdinates Learning Intentions Pupils should be able to use and plot coordinates in all 4 quadrants use negative numbers in context find the mid point of a line ID: 493764

point ordinates sides line ordinates point line sides ordinate mid quadrants vertical direction horizontal sidesopposite origin start find axes

Share:

Link:

Embed:

Download Presentation from below link

Download Presentation The PPT/PDF document "vms http://www.mathsisfun.com/fractions...." is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.


Presentation Transcript

Slide1

vms

http://www.mathsisfun.com/fractions.html

Year 8 Mathematics

Co-OrdinatesSlide2

Learning Intentions

Pupils should be able to

use and plot co-ordinates in all 4 quadrantsuse negative numbers in contextfind the mid- point of a lineSolve problem using co-ordinatesSlide3

Co-Ordinate Systems

Used to specify a location

Latitude and LongitudeOrdinance Survey 6 figure Grid systemPost CodesGPSCartesian Co-ordinatesSlide4

Cartesian Co-ordinates

Devised by René Descartes (1596-1650)

Two axes at right anglesY-axis is verticalX-axis is horizontalThe point (0, 0) is called the Origin.Y’s Up and X is acrossSlide5

X and Y Co-ordinates

Co-ordinates are written as two numbers in brackets separated by a comma.

For example (2, 4) and (8, 7)The first number refers to the x-ordinateThe second number refers to the y-ordinateTogether they are called co-ordinatesSlide6

Plotting Co-ordinates

When plotting co-ordinates we always start from the origin

To plot the point (2, 3) we start at the origin and move two squares in the x (horizontal) direction and then three square in the y (vertical) direction.To plot the point (8, 9) we start at the origin and move eight squares in the x (horizontal) direction and then nine square in the y (vertical) direction.Slide7

Mid-Point

The mid-point of a line is the point in the middle of the line

You can find the co-ordinates of the mid-point by finding the average of the x ordinates at each end of the line and the y ordinates at each end of the line.Slide8

Finding the mid-point

Find the mid-point of the line from (2, 4) to (6, 2)

x ordinate = = 4y ordinate = = 3Co-ordinates of mid-point = (4, 3)Slide9

Horizontal Lines

For a horizontal line, all the points on the line have the same y ordinate.Slide10

Vertical Lines

For a vertical line, all the points have the same x ordinateSlide11

Properties of Shapes

Quadrilateral

Four sidesTrapeziumFour sidesOne pair of parallel sidesParallelogramFour sidesTwo pairs of parallel sidesOpposite sides equalSlide12

Properties of Shapes

Rhombus

Four sidesOpposite sides parallelAll sides equalRectangleFour sidesOpposite sides parallelFour right anglesSlide13

Properties of Shapes

Square

Four sidesOpposite sides parallelOpposite sides equalFour right anglesKiteFour sidesAdjacent sides equalSlide14

The Four Quadrants

Extending the x and y axes beyond the origin gives the negative scales.

The areas of the graph between axes are called quadrants. So now we have four quadrants in total.Co-ordinates in these quadrants are still described in terms of x and y. But now we can have negative values for x, y or both.For example in the below:The coordinates of A are (-2, 3).The coordinates of B are (-3, -4).Slide15

Alien Attack

How many Aliens can you kill!

http://www.flashymaths.co.uk/swf/alien.swf