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Try to answer the following questions here:

  • What is this question used for?
  • What does this question assess?
  • What does the student have to do?
  • How is the question randomised?
  • Are there any implementation details that editors should be aware of?


Problem Sheet 7




From users who are members of Problem Sheet 7 :



Checkpoint description

Describe what's changed since the last checkpoint.

Math ematics 2 years, 8 months ago

Gave some feedback: Ready to use

Patrick Joyce 2 years, 9 months ago

Created this as a copy of Q17.(new).
Name Status Author Last Modified
Square and cube numbers Ready to use Stanislav Duris 20/11/2019 14:43
Stanislav's copy of Tables of square/cube numbers and powers of ten before needs to be tested Should not be used Stanislav Duris 22/06/2017 14:27
Calculate powers of ten Ready to use Stanislav Duris 20/11/2019 14:34
Always, sometimes or never: square and cube numbers Ready to use Stanislav Duris 20/11/2019 14:32
Positieve en negatieve machten van 10 draft Johan Maertens 10/07/2017 12:47
Q3.Homework7 draft Patrick Joyce 07/08/2017 16:32
Q17.(new) draft Patrick Joyce 10/08/2017 15:53
Q18.(new) draft Patrick Joyce 10/08/2017 15:56
Q17.(new) Ready to use Patrick Joyce 05/12/2017 12:47
Q18.(new) Ready to use Patrick Joyce 05/12/2017 12:48
Q19.(new) Ready to use Patrick Joyce 05/12/2017 12:50
Q20.(new) Ready to use Patrick Joyce 30/11/2017 17:16
Grainne's copy of Q19.(new) draft Grainne Scanlon 16/01/2018 13:45
Louise's copy of Calculate powers of ten draft Louise Lynch 09/02/2018 23:32
Always, sometimes or never: square and cube numbers draft Xiaodan Leng 11/07/2019 01:45
Square and cube numbers 1 draft Leonardo Juliano 19/09/2019 16:05

Give any introductory information the student needs.

No variables have been defined in this question.

(a number)

Numbers between and (inclusive) with step size
A random number between and (inclusive) with step size

(text string)


(text strings)

This variable is an HTML node. HTML nodes can not be relied upon to work correctly when resuming a session - for example, attached event callbacks will be lost, and mathematical notation will likely also break.

If this causes problems, try to create HTML nodes where you use them in content areas, instead of storing them in variables.

Describe what this variable represents, and list any assumptions made about its value.

This variable doesn't seem to be used anywhere.

Name Type Generated Value

Error in variable testing condition

There's an error in the condition you specified in the Variable testing tab. Variable values can't be generated until it's fixed.


for seconds

Running for ...

No parts have been defined in this question.

Select a part to edit.

Ask the student a question, and give any hints about how they should answer this part.

The correct answer is an equation. Use the accuracy tab to generate variable values satisfying this equation so it can be marked accurately.

Advanced settings

Checking accuracy

Define the range of points over which the student's answer will be compared with the correct answer, and the method used to compare them.

Variable value generators

Give expressions which produce values for each of the variables in the expected answer. Leave blank to pick a random value from the range defined above, following the inferred type of the variable.

Pattern restriction


String restrictions

Advanced settings

Advanced settings

Advanced settings

Advanced settings

Advanced settings

Both choices and answers must be defined for this part.

Advanced settings

Help with this part type

Base marking algorithm

Custom marking algorithm

Test that the marking algorithm works

Check that the marking algorithm works with different sets of variables and student answers using the interface below.

Create unit tests to save expected results and to document how the algorithm should work.

There's an error which means the marking algorithm can't run:

Gap Student's answer
Name Value

Value Feedback

Click on a note's name to show or hide it. Only shown notes will be included when you create a unit test.

Unit tests

No unit tests have been defined. Enter an answer above, select one or more notes, and click the "Create a unit test" button.

The following tests check that the question is behaving as desired.

This test has not been run yet This test produces the expected output This test does not produce the expected output

This test is not currently producing the expected result. Fix the marking algorithm to produce the expected results detailed below or, if this test is out of date, update the test to accept the current values.

One or more notes in this test are no longer defined. If these notes are no longer needed, you should delete this test.

Name Value

Note Value Feedback
This note produces the expected output Current:

This test has not yet been run.

When you need to change the way this part works beyond the available options, you can write JavaScript code to be executed at the times described below.

Run this script the built-in script.

This script runs after the built-in script.

To account for errors made by the student in earlier calculations, replace question variables with answers to earlier parts.

In order to create a variable replacement, you must define at least one variable and one other part.

Variable Answer to use Must be answered?

The variable replacements you've chosen will cause the following variables to be regenerated each time the student submits an answer to this part:

These variables have some random elements, which means they're not guaranteed to have the same value each time the student submits an answer. You should define new variables to store the random elements, so that they remain the same each time this part is marked.

More information about this problem



Give a worked solution to the whole question.





This script will run after the question's variable have been generated but before the HTML is attached.
Apply styling rules to the question's content.

This question is used in the following exams: