There was an error loading the page.
History and Feedback
Christian Lawson-Perfect 1 year, 10 months ago
Saved a checkpoint:
The gaps are all set as "mathematical expression", but there's no reason they shouldn't be "number entry" (apart from the formula part, obv.)
The parts of this question aren't coherent; you could keep the same sequence throughout, and ask the student to:
- Find the common ratio
- Give the formula for the $n$th term
- Calculate a given term.
Lauren Richards 1 year, 10 months ago
- Make sure i) and ii) etc are in italics both in the parts and the advice.
- I think I would capitalise "Common ratio" in part a).
- Advice content for a) is fine.
- Where you have stated what the formula for the geometric sequence is in part b) of the advice, I think you should explain that a is the first term and r is the common ratio.
- Make sure you use displaystyle to make the formula large.
- Think there might be a slight glitch in the advice of c) where you are trying to figure out the common ratio, it says a*a^3 instead of 375 as it was supposed to be in this case.
- Typo in the last sentence of the advice - it says "we can write substitute them into the formula..." - "We" should be capitalised and just scrap write.
|Find and use the formula for a geometric sequence||Ready to use||Hannah Aldous||14/05/2019 14:59|
|Deirdre's copy of Find and use the formula for a geometric sequence||draft||Deirdre Casey||06/11/2017 12:40|
|Marte's copy of Find and use the formula for a geometric sequence||draft||Marte Bråtalien||12/04/2018 14:12|
|Joël's copy of Find and use the formula for a geometric sequence||draft||Joël Cohen||27/08/2018 12:35|
|Hallar el término general de una secuencia geométrica.||Ready to use||Luis Hernandez||14/01/2019 13:17|
|Simon's copy of Find and use the formula for a geometric sequence||draft||Simon Thomas||25/02/2019 10:50|
|Justin's copy of Find and use the formula for a geometric sequence||draft||Justin McGuinness||14/05/2019 15:02|
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:
- Sequences by Elliott Fletcher in Elliott's workspace.
- Geometric sequences by Christian Lawson-Perfect in Transition to university.
- Geometric sequences by steve kilgallon in Graphs and series.
- HI by Pádhraic O' Hanrahan in Numbas Workshop.
- Stuff by Shane Walsh in Shane's workspace.
- Example exam by Emma Howard in Emma's workspace.
- First Test by John Sheekey in John's workspace.
- My first test by Marie Nicholson in Marie's workspace.
- Test on some stuff by Christian Lawson-Perfect in Christian's workspace.
- P12 - Series & Sequences by Rob Beckett in Rob's workspace.
- WorkshopPracticeExam by Jessica Doherty in Jessica's workspace.