Year 7 – Module 2, Lessons 8 & 9
Reviewed September 2010
POTATO INVESTIGATION – EXEMPLAR SUCCESS CRITERIA
LEVEL 6
Task
You are to carry out an investigation to find out how the number of
potato pieces affects the rate of decomposition of hydrogen
peroxide.
To be successful I will need to:

Collect all the correct equipment to carry out my investigation.

Understand any hazards that might be involved in carrying out my
investigation so that I can work safely.

Cut all the pieces of potato so that they are the same size.

Control all the variables that need to be controlled so that my
investigation is fair.

Collect a set of reliable results with an appropriate range and
display them in a table so they can be analysed carefully.

Draw a good quality scatter graph so that I can identify any trends
and patterns in my investigation.

Use my results and my graph to draw valid conclusions.

Write a detailed evaluation so that I can improve the way I carry
out future investigations.
Year 7 – Module 2, Lessons 8 & 9
Reviewed September 2010
POTATO INVESTIGATION - SUCCESS CRITERIA
LEVEL 5
Task
You are to carry out an investigation to find out how the number of
potato pieces affects the rate of decomposition of hydrogen
peroxide.
Try to match up each of the success criteria below with a suitable
justification:
To be successful I will need to:
So that I can:

collect all the correct
apparatus

work sensibly and safely

know the hazards involved in
the investigation

so that I can draw valid
conclusions from my
investigation

draw a table of results and
draw a scatter graph

carry out a fair test

cut all the pieces of potato
so that they are the same
size

carry out my investigation
using the correct scientific
equipment
Write these in a suitable order in your book.
Year 7 – Module 2, Lessons 8 & 9
Reviewed September 2010
POTATO INVESTIGATION - SUCCESS CRITERIA
LEVEL 4
Task
You are to carry out an investigation to find out how the number of
potato pieces affects the rate of decomposition of hydrogen
peroxide.
Select four suitable Success Criteria from the following list and use them
to complete the Spider Diagram below:
To be successful I will need to:








collect all the correct apparatus
draw a picture of a kettle
work sensibly and safely
set up a microscope
draw a table of results and draw a scatter graph
change three independent variables each time
cut all the potato pieces so that they are the same size
let someone else do the experiment for me
Potato
Investigation
To be successful
I will need to:
SUCCESS CRITERIA
Write these in a suitable order in your book.
Year 7 – Module 2, Lessons 8 & 9
Reviewed September 2010
POTATO INVESTIGATION - SUCCESS CRITERIA
LEVEL 3
The following are some suggested success criteria for carrying out the
Potato Investigation.
Discuss them in your group and then select four suitable Success Criteria
from the following list and use them to complete the Spider Diagram
below:
To be successful I will need to:








collect all the correct apparatus
draw a picture of a kettle
work sensibly and safely
set up a microscope
draw a table of results and draw a scatter graph
change three independent variables each time
cut all the potato pieces so that they are the same size
let someone else do the experiment for me
Potato
Investigation
To be successful
I will need to: