Loading...

There was an error loading the page.


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?

Metadata

Taxonomy:

History and Feedback

Comment

Checkpoint description

Describe what's changed since the last checkpoint.

Anne Else 3 months, 2 weeks ago

Gave some feedback: Ready to use

Picture of Christian Lawson-Perfect

Christian Lawson-Perfect 4 months ago

Saved a checkpoint:

Replaced string restrictions and javascript with pattern restrictions.

Restore this checkpoint

Elliott Fletcher 2 years, 1 month ago

Published this.
Picture of Christian Lawson-Perfect

Christian Lawson-Perfect 2 years, 2 months ago

Gave some feedback: Ready to use

Picture of Christian Lawson-Perfect

Christian Lawson-Perfect 2 years, 2 months ago

Saved a checkpoint:

It looks like parts e and f had some constant coefficients in the advice which weren't present in the actual question, so I've removed those.

Otherwise, this looks good!

Restore this checkpoint

Lauren Richards 2 years, 2 months ago

Gave some feedback: Has some problems

Lauren Richards 2 years, 2 months ago

  • I would scrap the first sentence of the statement. It should be in the description. I think I would just write "Using the laws of indices, simplify each expression down to its simplest form." The bit that you have afterwards that states "Recall that a^0=1..." didn't apply to any of the questions I was given, and it seems to be a random place to have this bit of info. 
  • In part c), you suggested that the user could use the rule a^-m=1/a^m but when I tried to write my answer in that form it did not accept it. I wouldn't suggest you suggest to the user to use the second rule. 
  • Typo in part b) of the advice - explicity instead of explicitly. 
  • I'm not sure, but I don't know if the advice for the alternative method of part c) is correct or clear enough. I thought that that rule was a way of reorganising the fraction rather than actually calculating stuff and that if you used it, the final answer of (8a^4)/(3a^6) would be 8/(3a^2) not 8/3(a^-2). I may well be wrong hahaha so just ignore me if so! 
  • I think you're missing a \displaystyle in part e) of the advice. 
  • I think the bit you have written at the end of part e) "This can be simplified further if possible." is a bit random. I would scrap it. 
  • I think you're missing some displaystyles in part f) of the advice as well. 
  • I think generally the question is very good and the advice is very clear and concise! 

Elliott Fletcher 2 years, 2 months ago

Gave some feedback: Needs to be tested

Aiden McCall 2 years, 2 months ago

Gave some feedback: Has some problems

Aiden McCall 2 years, 2 months ago

Advice:
For all parts, not 100% sure on this but personally I would omit the commas after each line of the equation and just have some punctuation at the end such as a full stop or comma like you have done, just not every line.
a) Very good
b) To read easier I would remove 'Then' from the first line and 'that' from the second. Also possibly but 'Therefore' (the one before the equation) on another line.
All other parts were good just the commas in the equations.

Elliott Fletcher 2 years, 2 months ago

Gave some feedback: Needs to be tested

Elliott Fletcher 2 years, 2 months ago

Scratch that

Elliott Fletcher 2 years, 2 months ago

Gave some feedback: Has some problems

Elliott Fletcher 2 years, 2 months ago

Thanks for the feedback Aiden, think i should have fixed all of the string restrictions now.

Elliott Fletcher 2 years, 2 months ago

Gave some feedback: Needs to be tested

Aiden McCall 2 years, 2 months ago

Gave some feedback: Has some problems

Aiden McCall 2 years, 2 months ago

a) Inputting the question gives the correct answer this can be fixed by restricting the string * 

b) As above

c) Restrict strings ( ) 

d) As above

e) and f) are good. Rest of the question is good just the string parts.

Elliott Fletcher 2 years, 3 months ago

Gave some feedback: Needs to be tested

Picture of Christian Lawson-Perfect

Christian Lawson-Perfect 2 years, 3 months ago

Gave some feedback: Has some problems

Picture of Christian Lawson-Perfect

Christian Lawson-Perfect 2 years, 3 months ago

This mainly looks good.

Try to avoid long runs of maths in-line with text - they're quite hard to read. Put long bits of maths in display mode, and don't be afraid to use lots of paragraph breaks.

Elliott Fletcher 2 years, 3 months ago

Gave some feedback: Needs to be tested

Elliott Fletcher 2 years, 3 months ago

Gave some feedback: Needs to be tested

Elliott Fletcher 2 years, 3 months ago

Created this.
Name Status Author Last Modified
Laws of Indices Ready to use Elliott Fletcher 03/06/2019 11:30
Katherine's copy of Laws of Indices draft Katherine Tomlinson 01/08/2017 12:15
Eva's copy of Laws of Indices draft Eva Szatmari 12/06/2018 15:50
Laws of Indices [L6] Randomised Doesn't work Matthew James Sykes 25/07/2018 10:28
1. Laws of indices draft emma rand 27/07/2018 13:08
Algebra: Laws of Indices Needs to be tested Clare Lundon 14/10/2018 09:12
Clare's copy of Algebra: Laws of Indices draft Clare Lundon 13/10/2018 20:39
Ed's copy of Laws of Indices draft Ed Southwood 07/11/2018 10:55
Simon's copy of Laws of Indices draft Simon Thomas 04/03/2019 13:47
MATH6051 Indices Ready to use David Goulding 14/03/2019 22:46
Blathnaid's copy of Simon's copy of Laws of Indices draft Blathnaid Sheridan 11/03/2019 09:13
David's copy of Laws of Indices draft David Goulding 11/03/2019 17:43
John's copy of Laws of Indices draft John Wick 17/06/2019 10:01
J. Richard's copy of Laws of Indices draft J. Richard Snape 15/08/2019 17:17
J. Richard's copy of Laws of Indices draft J. Richard Snape 15/08/2019 17:19
rekenregels van machten draft Johan Maertens 20/08/2019 16:36
Laws of Indeces 2 draft Leonardo Juliano 30/08/2019 13:15
Katy's copy of Laws of Indices draft Katy Dobson 03/09/2019 08:50

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)

(numbers)

(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.

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.

Error:

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


Variables


String restrictions

Advanced settings




Advanced settings


Advanced settings



Advanced settings



Advanced settings



Answers
Choices
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:


                                    
Name Value

Note
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:
Expected:

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

to

Parts

Give a worked solution to the whole question.

Extensions

Rulesets

Functions

Preamble

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: