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

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

Presenting Results

• Record your results in a table.

• What is Wrong with this table?

Length Time Time Time Mean

Time

Presenting Results

• You must say what you are measuring in

– THE UNITS

Length (m) Time (s) Time (s) Time (s) Average

Time (s)

Choosing the correct type of graph

• If your Independent variable (What I changed) is a number then you should draw a...

• line graph

Choosing the correct type of graph

• If your Independent variable (What I changed) is a number then you should draw a...

• li e graph

Choosing the correct type of graph

• If your Independent variable (What I changed) is a number then you should draw a...

• li e graph

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.

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.

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

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

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

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.

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

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.

Year 10 Practise for Practical Assessment

Results Tables and Plotting Graphs

Investigating Hooke’s Law

(Extension of a Spring)

Investigating Hooke’s Law

Force on

spring (N)

Length of

spring (cm)

Extension of

spring (cm)

length 0 4.2

Results

Investigating Hooke’s Law

Force on

spring (N)

Length of

spring (cm)

Extension of

spring (cm)

length 0 4.2

1 4.6

Results

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

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

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

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

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

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.