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?

History and Feedback

Comment

Checkpoint description

Describe what's changed since the last checkpoint.

Picture of Chris Graham

Chris Graham 2 years, 4 months ago

Gave some feedback: Ready to use

Picture of Chris Graham

Chris Graham 2 years, 4 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, 4 months ago

Published this.

Aiden McCall 2 years, 4 months ago

Saved a checkpoint:

Edited the wording and equations in main and advice.

Restore this checkpoint

Picture of Bradley Bush

Bradley Bush 2 years, 5 months ago

Gave some feedback: Needs to be tested

Picture of Bradley Bush

Bradley Bush 2 years, 5 months ago

Thank you for the follow up advice, I'm hoping it's even better now

Picture of Chris Graham

Chris Graham 2 years, 5 months ago

Gave some feedback: Has some problems

Picture of Chris Graham

Chris Graham 2 years, 5 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 ($y2-y1$) to the horizontal change ($x2-x1$).

Picture of Bradley Bush

Bradley Bush 2 years, 5 months ago

Gave some feedback: Needs to be tested

Picture of Chris Graham

Chris Graham 2 years, 5 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.

Picture of Bradley Bush

Bradley Bush 2 years, 5 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.

Picture of Chris Graham

Chris Graham 2 years, 5 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 'y-max' 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.

Picture of Chris Graham

Chris Graham 2 years, 5 months ago

Gave some feedback: Has some problems

Picture of Bradley Bush

Bradley Bush 2 years, 5 months ago

Gave some feedback: Needs to be tested

Bradley Bush 2 years, 5 months ago

Created this as a copy of Find the equation of a line through two points - positive gradient.
Name Status Author Last Modified
Find the equation of a line through two points - positive gradient Ready to use Bradley Bush 29/11/2019 16:13
Find the equation of a line through two points - negative gradient Ready to use Bradley Bush 20/11/2019 14:39
Find the equation of a line through two points - zero gradient Ready to use Bradley Bush 20/11/2019 14:39
Straight line equation application: measuring sunflower height Ready to use Bradley Bush 20/11/2019 14:43
Christopher's copy of Finding a line equation through two points +ve gradient JSX draft Chris Graham 10/07/2017 18:29
Louise's copy of Find the equation of a line through two points - positive gradient draft Louise Lynch 25/01/2018 22:30
Find the equation of a line through two points - positive gradient draft Mark Hodds 23/02/2018 14:10
Ida's copy of Find the equation of a line through two points - positive gradient draft Ida Landgärds 12/04/2018 14:00
Spørsmål 1 draft Ida Landgärds 19/06/2018 13:40
Marte's copy of Find the equation of a line through two points - positive gradient draft Marte Bråtalien 12/04/2018 14:13
Thomas's copy of Find the equation of a line through two points - negative gradient draft Thomas Strasser 11/05/2018 01:28
Equation de droite Needs to be tested Alain Virouleau 30/05/2019 18:52
Linear Equations - Find the equation of a line through two points draft Paul Hancock 31/07/2018 00:30
Find the equation of a line through two points - positive gradient [L3] Needs to be tested Matthew James Sykes 25/07/2018 11:12
Beer Lambert Law Doesn't work Matthew James Sykes 24/07/2018 15:03
Beer Lambert Law Working Back up Should not be used Matthew James Sykes 25/07/2018 10:35
Joël's copy of Find the equation of a line through two points - positive gradient draft Joël Cohen 27/08/2018 12:26
Beer Lambert Law Working Back up Should not be used Matthew James Sykes 04/09/2018 15:30
Ida's copy of Spørsmål 1 draft Ida Landgärds 23/11/2018 07:54
David's copy of Straight line equation application: measuring sunflower height draft David Rickard 07/11/2018 21:05
equation of a line through two points draft heike hoffmann 14/11/2018 22:49
Equation of a line through two points draft Johnny Yi 14/01/2019 05:38
Equation of a line through two points - positive gradient Ready to use Angharad Thomas 21/11/2019 11:05
Luis's copy of Find the equation of a line through two points - zero gradient draft Luis Hernandez 29/11/2018 21:07
Simon's copy of Equation of a line through two points - positive gradient draft Simon Thomas 20/05/2019 12:26
Maria's copy of Simon's copy of Equation of a line through two points - positive gradient draft Maria Aneiros 25/05/2019 07:25
Maria's copy of Find the equation of a line through two points - negative gradient draft Maria Aneiros 29/05/2019 05:07
Heather's copy of Find the equation of a line through two points - positive gradient draft Heather Driscoll 03/06/2019 14:27
Equation of a line through two points - positive gradient draft Heather Driscoll 03/06/2019 14:35
Equation of a line through two points draft Philip Charlton 17/06/2019 08:46
Find the equation of a line through two points - zero gradient draft Xiaodan Leng 10/07/2019 21:34
Equation of a line through two points - positive gradient draft Xiaodan Leng 10/07/2019 22:56
Adelle's copy of Straight line equation application: measuring sunflower height draft Adelle Colbourn 28/11/2019 04:23
Paul's copy of Straight line equation application: measuring sunflower height draft Paul Verheyen 06/09/2019 07:29
WordProblem02 draft Paul Verheyen 01/09/2019 15:35
Hoogtemeting van zonnebloemen draft Paul Verheyen 05/09/2019 20:29
Hoogte van zonnebloemen Ready to use Paul Verheyen 13/10/2019 15:39
Straight line equation application: measuring sunflower height draft steve kilgallon 27/10/2019 15:43
Voor Dirk draft Faye Caluwé 20/11/2019 16:49
Blathnaid's copy of Linear Equations - Find the equation of a line through two points draft Blathnaid Sheridan 07/11/2019 15:25
Dirk's copy of Equation of a line through two points - positive gradient draft Dirk Janssens 25/11/2019 15:23
Find the equation of a line through two points - zero gradient Ready to use AJAY OTTA 02/12/2019 08:01

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.

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.

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:


                                    
Gap Student's answer
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: