Loading...
Error
There was an error loading the page.
Contributors
History and Feedback
Chris Graham 2 years, 7 months ago
Gave some feedback: Ready to use
Chris Graham 2 years, 7 months ago
I've changed some of the simplification rules in the advice, corrected the calculation for the gradient and other inconsistencies with regards to the order of points A and B. Fixed some typos.
Elliott Fletcher 2 years, 7 months ago
Published this.Aiden McCall 2 years, 7 months ago
Saved a checkpoint:
Edited the wording and equations in main and advice.
Bradley Bush 2 years, 7 months ago
Gave some feedback: Needs to be tested
Bradley Bush 2 years, 7 months ago
Thank you for the follow up advice, I'm hoping it's even better now
Chris Graham 2 years, 7 months ago
Gave some feedback: Has some problems
Chris Graham 2 years, 7 months ago
Much better!
One more thing... points A and B should be labelled the other way round. Let's give your question the context of driving in a car: if you travel from A to B then, as it stands, the gradient is positive. Related to this, you do not give any indication where the equation for the gradient comes from. You could say something like, the gradient is the ratio of the vertical change ($y2y1$) to the horizontal change ($x2x1$).
Bradley Bush 2 years, 7 months ago
Gave some feedback: Needs to be tested
Chris Graham 2 years, 7 months ago
Brad, why not split this into two parts, the first asking for the gradient and intercept and the second the equation. The student can then see if they are on the right lines. You could also then use adaptive marking (ro replace m and c) in the second part.
Bradley Bush 2 years, 7 months ago
Thank you for the feedback. I have acted on all the points you made there and I will apply these to the other 3 versions of this question too.
Chris Graham 2 years, 7 months ago
Good work with the adaptive axis ranges, however in some cases the x axis is objectionably at edge of the board, as the maximum of the y range evaluates to 0. Use the javascript function
Math.max()
to set a minimum range displayed above the axis, e.g.Math.max(yb+4,2)
would set the 'ymax' to a minimum of 2.You could use a similar method to check that the intercept is on the board (it currently isn't always).
Check your spelling, e.g. "coordiantes" and that your sentences read fluidly, e.g. "find the straight line equation of the line running through these points" can be written "find the equation of the straight line running through these points" and so on.
Chris Graham 2 years, 7 months ago
Gave some feedback: Has some problems
Bradley Bush 2 years, 7 months ago
Gave some feedback: Needs to be tested
Bradley Bush 2 years, 7 months ago
Created this as a copy of Find the equation of a line through two points  positive gradient.No variables have been defined in this question.
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.
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:
 Find the equation of a line through two points by Christian LawsonPerfect in Transition to university.
 maths practicerevision by David Martin in David's workspace.
 My first exam by John Illsley in John's workspace.
 Find the equation of a line through two points by Angus Rosenburgh in Angus's workspace.
 Find the equation of a line through two points [L3 Randomised] by Matthew James Sykes in CHY1205.
 NUMBAS Find the equation of a line through two points by Katy Dobson in Katy's workspace.
 test scorm in Wattle by Jenny Edwards in Jenny's workspace.
 JP by Julie Crowley in JP.
 Year 10 Practice Exam 1 by Neil Anderson in Neil's workspace.
 Algebra by Katie Bullen in Katie's workspace.
 PH022 Week 2 Moodle Quiz by Vicky Mason in Vicky's workspace.