There was an error loading the page.
History and Feedback
Elliott Fletcher 2 years, 2 months ago
Thanks for your feedback Brad,
I did try to make it so that s and t were always integers but i think there are so many numbers involved in the calculation that it would be very difficult to do. Instead i have restricted the values that the variables can take to make the fractions in the answers slightly nicer.
I see what you mean about the error message, i'm not sure how to fix this but i have said that you can leave your answer as a fraction in the question.
I have also split the question up into parts to make it more accessible to students with less algebraic skill.
Bradley Bush 2 years, 2 months ago
Amazing question, most of my feedback revolves around the idea that I think it might be too hard for the student so I only have a few comments on this one:
- I didn't find an example of when s and t weren't both fractions, I think this adds to the complexity and the challenge of the question but is this what we want to be testing? Could this be imporved through making the variables 'nicer' so the answers are whole numbers more often than not?
- If you are leaving the answers as their more complex fraction form then you need to have a go at changing the error message that comes up. The answer gap still accepts a fractional answer if you type the fraction in full, however, if you're slow like me and you type "x/" and then pause for a second, you'll get an error message "your answer is invalid. You must enter an integer or a decimal. This is weird because when you then finish the expresion, the error message goes away. I am just thinking that this might be misdirective to see for anyone typing in their answer slowly. If you can't fix the error message, and you are keeping the fractional answers then it might be worth specifying that answers can be left as fractions in the question.
- On that note, I might write "reduce your answer to simplist [fractional] form" instead of "reduce your answer to it's lowest terms"; or something along those lines.
- I am actually thinking that the question still might be too hard for some students, making it inaccessible to the students who have less algebraic skill; even with the changes I suggested above. Maybe a solution of this is to create a copy of the question (labelling it 'easy version') and have the same question, just break it down into parts by asking students to give an expression for p(factor 1) then p(factor 2) then with the third part asking them to use simultaneous equations to find t and s.
- Your parts and advice seem free of typos and formatting errors (I'm very jealous).
Feel free to ask if you don't understand any of what I've been getting at. High quality question.
|Finding unknown coefficients of a polynomial, using the remainder theorem||Ready to use||Elliott Fletcher||20/05/2019 13:28|
|George's copy of Finding unknown coefficients of a polynomial, using the remainder theorem||draft||George Loughlin||06/07/2017 15:09|
|Encontrar coeficientes desconocidos de un polinomio, usando el teorema del resto||Ready to use||Luis Hernandez||15/01/2019 03:38|
|Simon's copy of Finding unknown coefficients of a polynomial, using the remainder theorem||draft||Simon Thomas||28/02/2019 12:15|
|Finding unknown coefficients of a polynomial, using the remainder theorem||draft||Johnny Yi||30/04/2019 03:19|
|Christian's copy of Finding unknown coefficients of a polynomial, using the remainder theorem||draft||Christian Lawson-Perfect||20/05/2019 13:55|
|Finding unknown coefficients of a polynomial, using the remainder theorem||draft||Xiaodan Leng||10/07/2019 21:44|
No variables have been defined in this question.
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.
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:
Click on a note's name to show or hide it. Only shown notes will be included when you create a unit test.
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.
|This note produces the expected output||Current:||
This test has not yet been run.
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.
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.
- Apply the factor and remainder theorems by Christian Lawson-Perfect in Transition to university.
- Ryan's copy of Algebra and functions by Ryan Poling in Ryan's workspace.
- Polynomials by Max S in Max's workspace.
- Possible applicable questions from previous year by Tom Bold in Transition to university maths.