Starter quiz
- Match the variable to its description.
- control⇔the variables you keep the same ✓
- independent⇔the variable you change ✓
- dependent⇔the variable you measure ✓
In the following investigation what is the dependent variable? How wing shape affects the distance seeds disperse.- wing shape ✓
- the distance seeds disperse
- wing length
- wing width
- wing area
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- In an investigation what do you use to collect your result in?
- chart
- graph
- table ✓
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- In this investigation what is the independent variable? How distance from a light source effects the number of seed germinating.
- the number of seeds that do not germinate
- the number of seeds that germinate
- distance from the light source to the seeds ✓
- distance between the germinating seeds
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- When you collect repeat readings you can calculate a ______
- 'mean' ✓
- What is an anomalous result?
- one that fits the pattern
- one that partially fits the pattern
- one that doesn't fit the pattern ✓
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Exit quiz
- Match the type of graph or chart to its use.
- line graph⇔used where the independent variable is continuous ✓
- bar charts⇔used where the independent variable is categoric ✓
Put the following steps in order.- 1⇔draw an evenly spaced scale on the x-axis for the independent variable
- 2⇔draw an evenly spaced scale on the y-axis for the dependent variable
- 3⇔label both axes with descriptive titles and units
- 4⇔plot the points accurately with a cross
- 5⇔draw a line of best fit
What does this data show?- as the height dropped from decreases, the distance dispersed increases
- as the height dropped from increases, the distance dispersed decreases
- as the height dropped from increases, the distance dispersed increases ✓
- as the height dropped from decreases, the distance dispersed decreases
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- Match the variable to the axis it is plotted on.
- x-axis⇔indpendent variable ✓
- y-axis⇔dependent variable ✓
What is the dependent variable on this bar chart?- distance seed dispersed ✓
- material of model
- paper
- card
- tissue
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- Which conclusions can be drawn form this bar chart?
- the material of the model affected the distance dispersed ✓
- tissue dispersed triple the dispersal of card ✓
- paper dispersed almost double the distance of card but less than tissue ✓
- tissue dispersed double the distance of card
- the height the model was dropped from affected the distance dispersed
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Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- Experimental data can be analysed by plotting data on a line graph or bar chart.
- Line graphs are used where the independent variable is continuous; bar charts are used where it is categoric.
- Drawing a bar chart and/or line graph follows a set format.
- A line of best fit on a line graph indicates the trend (relationship between in the independent and dependent variable).
Common misconception
Labelling the x-axis with the values investigated instead of an evenly spaced range; or putting the axes the wrong way round for independent and dependent variables.
Clearly showing the placement of variables in the table and on the graphs, step-by-step guidance of drawing the graphs.
Keywords
Line graph - A line graph displays data where the independent and dependent variables are continuous.
Bar chart - A bar chart displays data where the independent variable is categoric.
Line of best fit - A smooth line on a line graph that indicates the trend in the data is called the line of best fit.
Trend - A trend is a pattern in the data that shows the relationship between the independent and dependent variable.
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