Loading...
Error
There was an error loading the page.
Taxonomy:
Contributors
History and Feedback
Christian Lawson-Perfect 4 months ago
Saved a checkpoint:
Replaced some javascript with pattern restrictions. There are still some string restrictions that could be replaced with pattern restrictions.
Elliott Fletcher 2 years, 1 month ago
Published this.
Christian Lawson-Perfect 2 years, 2 months ago
Gave some feedback: Ready to use
Christian Lawson-Perfect 2 years, 2 months ago
Saved a checkpoint:
I changed the denominators for parts f,g and h from number entry to mathematical expression. While the answer is always a number, a student who's misunderstood might want to write a surd. You should let them fail!
I don't know why each line of the derivations ended with a comma, but this isn't conventional.
With those things fixed, this is a good question.
Elliott Fletcher 2 years, 2 months ago
Gave some feedback: Needs to be tested
Lauren Richards 2 years, 2 months ago
Gave some feedback: Has some problems
Lauren Richards 2 years, 2 months ago
- MAIN PARTS
- Part a) should have more numbers rather than just two.
- I think you will have a problem with people not knowing how to insert a square root sign into their answers, meaning they will be scuppered for all of the questions. I think you will need to tell them how to in the parts by giving an example. Say like "3\sqrt{5} can be written as 3*sqrt(5)". Alternatively, you could set it up via gap fill so that all of the answers can be given in a pre-prepared square root sign.
- Part b)'s steps could be a little off-putting for someone. They only need the first rule to do part b) but you have given them an extra rule that isn't relevant. It might confuse them.
- You don't need colons after "Simplify" in each part.
- Part h), your model answer included an unsimplified numerator, which might not be what the user gives. You didn't multiply out 3(\sqrt{3}+18) but writing 3\sqrt{13}+54 is not wrong.
- ADVICE
- I think you should restate the question in part a) after stating the rule and before the actual advice for part a).
- The examples listed for part a) and b) were not the ones I was asked in the test run. It was talking about \sqrt{405} both times when I had been asked about \sqrt{1377} in part a) and \sqrt{1053} in part b).
- In part c), I think you should show how the fraction cancels down a bit more by stating that the two \sqrt{17} cancel on the numerator and denominator. Someone might get lost if they followed the first method.
Elliott Fletcher 2 years, 2 months ago
Thanks for your feedback, i have corrected the mistakes
Elliott Fletcher 2 years, 2 months ago
Gave some feedback: Needs to be tested
Chris Graham 2 years, 3 months ago
Rather than having "Answer:" before the gap, I think I'd rather that the surd was repeated, e.g. "$\frac{1}{\sqrt{11}}=$"
In (g) and (h) your answers are displayed with a decimal on the numerator, which I presume is not what you intended. The reason for this is that the braces evaluate {{n}-sqrt({a})} to a decimal number. Try this instead to retain the integer values of n and a:
({n}-sqrt({a}))/{{n}^2-{a}}.
Good work with the advice, which is well laid out and punctuated.
Chris Graham 2 years, 3 months ago
Gave some feedback: Has some problems
Elliott Fletcher 2 years, 3 months ago
Gave some feedback: Needs to be tested
Elliott Fletcher 2 years, 3 months ago
Created this.No variables have been defined in this question.
| 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.
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.
Pattern restriction
Variables
String restrictions
| Answers | |
|---|---|
| Choices |
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.
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.
to
This question is used in the following exams:
- Algebra and functions by Elliott Fletcher in Elliott's workspace.
- Malcolm's copy of Algebra and functions by Malcolm Roberts in Malcolm's workspace.
- Surds by Christian Lawson-Perfect in Transition to university.
- Surds by Mark Hodds in Tutoring.
- P1 - Algebra & Functions by Rob Beckett in Rob's workspace.
- Nick's copy of Surds by Nick Walker in Nick's workspace.
- Surds [L0 Randomised] by Matthew James Sykes in CHY1205.
- PRE-LECTURE SKILLS by Matthew James Sykes in CHY1205.
- NUMBAS - Surds by Katy Dobson in Katy's workspace.
- Surds by Jo-Ann Lyons in Jo-Ann's workspace.
- Ryan's copy of Algebra and functions by Ryan Poling in Ryan's workspace.
- Exam 1 by Sam Dougherty in Sam's workspace.
- Test 1 by Ian Jeavons in Ian's workspace.