Difference between revisions of "Slope of a line"
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If the change in Y with the value of X increases corresponding line will have Positive Slope | If the change in Y with the value of X increases corresponding line will have Positive Slope | ||
===Activities=== | ===Activities=== | ||
− | #Activity No #1 | + | #Activity No #1 <br> |
− | + | The following Geogebra applet helps in visualising Positive and negetive Slope | |
=Assessment activities for CCE= | =Assessment activities for CCE= |
Revision as of 18:06, 12 August 2014
Philosophy of Mathematics |
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Concept Map
Textbook
Please click here for Karnataka and other text books.
Additional Information
Useful websites
Reference Books
Teaching Outlines
Concept 1
understanding what is a Slope
Learning objectives
- Slope is measure of the steepness of a line.
- Students will understands that slope increases with the steepness.
- Students will recognize and make a connection between the magnitude of the slope and the steepness of a line.
- Students will understands that Slope is a number (magnitude).
- Students understands that Slope is the orientation or inclination of a line with the X-axis.
- Students should also be able to draw a line with a specific slope.
Notes for teachers
Slope is a number which represents the steepness of a line Students can relate the slope of line to the tangent of the angle of elevation.
Activities
- Activity No1
understanding What is a slope?
Procedure
Ask the students to observe the given table describe the pattern using words .
Ask them to plot and join the points on grids and ask how the line segments is visible in the graph.
ask them to write the relation between X and Y.
(we can come to a conclusion that the larger the absolute value of the number,the linebecomes steeper.)
X | Y |
6 | 1 |
7 | 2 |
8 | 3 |
9 | 4 |
X | Y |
4 | 1 |
5 | 3 |
6 | 5 |
X | Y |
6 | 1 |
7 | 4 |
8 | 7 |
Assessment Questions
- Write the relation between X and Y(as an equation)
- plot the other points following the same pattern and join the points
- How do we differentiate these lines from one another?from the inclination with the x-axis i.e bending of line towards x-axis
- Can we visualise the angle so formed by the line with the X-axis?
- What is the relation between the bending of line and angle formed by it with the X-axis?
We can conclude that bending(orientation of line)increases with the increse in the angle or we can say line becomes steeper with the angle of inclination.
The slope of a line is a number that measures its "steepness" It is the change in y for a unit change in x along the line.
- How do we measure the steepness of line?
- Ask the students to measure Slope of other lines
- Ask the students to inspect the Slope with the help of relation between X and Y
- What is the slope of a horizontal and a Vertical line?
Concept 2
Positive and Negetive Slope
Learning objectives
- Students should also be able to visualise a line with positive and negetive Slope
- Students should also be able to differentiate a line with positive and negetive Slope
Notes for teachers
If the change in Y with the value of X decreases corresponding line will have Negetive Slope If the change in Y with the value of X increases corresponding line will have Positive Slope
Activities
- Activity No #1
The following Geogebra applet helps in visualising Positive and negetive Slope
Assessment activities for CCE
Geogebra Applet