year 10 practical assessment skills lesson 1 results ... · pdf filehooke’s law...
TRANSCRIPT
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Year 10 Practical Assessment Skills –
Lesson 1 Results tables and Graph Skills
Aim: to be able to present results and draw
appropriate types of graphs
Must: identify mistakes in data recording
Should: be able to identify the correct type of
graph dependant on the data
Could: plot out a graph from given results
labelling key features
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Graph Skills
This is a series of animated flash movies for students to use in a computer suite, to go through as a or for you to use on an interactive white board as an exposition tool.
http://www.tes.co.uk/Download.aspx?storycode=3005096&type=W&id=3044948
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Presenting Results
• Record your results in a table.
• What is Wrong with this table?
Length Time Time Time Mean
Time
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Presenting Results
• You must say what you are measuring in
– THE UNITS
Length (m) Time (s) Time (s) Time (s) Average
Time (s)
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Choosing the correct type of graph
• If your Independent variable (What I changed) is a number then you should draw a...
• line graph
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Choosing the correct type of graph
• If your Independent variable (What I changed) is a number then you should draw a...
• li e graph
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Choosing the correct type of graph
• If your Independent variable (What I changed) is a number then you should draw a...
• li e graph
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Draw a graph
• Make sure your graph takes up at least 1/3 of the paper.
• The Independent variable (what I change) goes along the bottom.
• The dependent variable (what depends on what has changed) goes up the side.
• Always write your labels and units on the graph before plotting the results.
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Line of best fit
• This shows the trend of your results.
• Do not just “join the dots”
• It does not have to be a straight line drawn with a ruler.
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Drawing a Graph
• Decide what type of graph you should draw.
• What variable should go on the bottom axis?
• Make sure your graph takes up at least 1/3 of the paper.
Time (s) Amount of gas produced (cm3)
10 15
20 30
30 47
40 61
50 72
60 81
70 81
80 81
90 81
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Drawing a Graph (2)
• Write the labels and units on the axis before plotting the graph.
• When you draw your line look for the trend don’t just “join the dots”
Time (s) Amount of gas produced (cm3)
10 15
20 30
30 47
40 61
50 72
60 81
70 81
80 81
90 81
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Drawing a Graph (3)
• Once you have completed your graph use the “drawing a graph toolbar” as a check list.
• Then ask another pupil to look at your graph with your “drawing a graph toolbar”
Time (s) Amount of gas produced (cm3)
10 15
20 30
30 47
40 61
50 72
60 81
70 81
80 81
90 81
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Communicating your Findings Assessment
• You will be assessed on the way you present and analyse the following information:-
– A student measure the speed of a duck over 1000m.
– The student measures the speed every 10 seconds.
– The results were 0m/s, 12m/s, 24m/s, 35m/s, 47m/s, 53m/s, 55m/s, 55m/s, 55m/s.
• Present the information:-
– Suitable table
– Suitable graph.
– Write on the bask of the table what you think is happening.
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Drawing a graph assessment
• Draw a graph for the following results.
Speed (mph) Braking Distance (m)
20 12
30 23
40 36
50 53
60 73
70 96
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1. Use a sharp pencil 2. Use a ruler 3. Draw two axis 4. Write the numbers or categories on the axis 5. Label the axis 6. Add the units to the axis label 7. Plot the data on the graph 8. Draw a line of best fit if applicable 9. Add a title and underline it
On the vertical line (y axis) put the dependent
variable. This is what you measured to find out the
effect.
You might want to start your title ‘A graph to
show....’
Top tip: Look at your results to determine an appropriate scale. Don’t go up to 100 if your highest result is 12!
Top tip: A line of best fit does not mean joining the dots. Draw a
straight or curved line that ‘best fits’ the
data
On the horizontal line (x axis) put the independent variable. This is the thing you changed to find out
its effect.
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Year 10 Practise for Practical Assessment
Results Tables and Plotting Graphs
Investigating Hooke’s Law
(Extension of a Spring)
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Investigating Hooke’s Law
Force on
spring (N)
Length of
spring (cm)
Extension of
spring (cm)
length 0 4.2
Results
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Investigating Hooke’s Law
Force on
spring (N)
Length of
spring (cm)
Extension of
spring (cm)
length 0 4.2
1 4.6
Results
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Investigating Hooke’s Law
Force on
spring (N)
Length of
spring (cm)
Extension of
spring (cm)
length 0
1
2
4.2
4.6
Results
5.5
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Investigating Hooke’s Law
Force on
spring (N)
Length of
spring (cm)
Extension of
spring (cm)
length
0
1
2
3
4.2
4.6
5.5
Results
6.5
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Investigating Hooke’s Law
Force on
spring (N)
Length of
spring (cm)
Extension of
spring (cm)
. . . and so on.
length
0
1
2
3
4
5
4.2
4.6
5.5
6.5
Results
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Investigating Hooke’s Law
Force on
spring (N)
Length of
spring (cm)
Extension of
spring (cm)
. . . and so on.
length
0
1
2
3
4
5
4.2 0
4.6 0.4
5.5 1.3
6.5 2.3
Results
7.9 3.7
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Investigating Hooke’s Law Results
Force on spring (N)
Length of spring (cm)
Extension of spring (cm)
0 4.2 0
1 4.6 0.4
2 5.5 1.3
3 6.5 2.3
4 7.9 3.7
5 8.4 4.2
6 9.0 4.8
7 9.5 5.3
8 10.2 6.0
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Extension (cm)
Force (N) 0
2
1
3
0 1 2 3 7 6 4 5
Graph of force against extension of a
spring.
. . . and so on.
and
so
on.