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#### Checkpoint description

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#### Christian Lawson-Perfect5 years, 8 months ago

Gave some feedback: Ready to use

#### Christian Lawson-Perfect5 years, 8 months ago

Saved a checkpoint:

I've done a lot of rewording, and added random names.

Published this.

#### Elliott Fletcher5 years, 8 months ago

Gave some feedback: Needs to be tested

#### Chris Graham commented 5 years, 8 months ago

Elliott, since you've been working on this one already, can we add a step with the equation for an arithmetic sequence and gaps for the first value and difference. In addition, let's put everything before "How many customers..." into the statement.

#### Chris Graham5 years, 8 months ago

Gave some feedback: Has some problems

#### Elliott Fletcher commented 5 years, 8 months ago

I have mentioned that ticket number 1 recieves strawberry ice cream in the question statement.

#### Elliott Fletcher5 years, 8 months ago

Gave some feedback: Needs to be tested

#### Elliott Fletcher commented 5 years, 8 months ago

Do you want me to edit this question as well Chris?

#### Chris Graham commented 5 years, 8 months ago

The advice assumes that the student knows that ticket number 1 receives strawberry ice cream. That works out OK, but perhaps this should be stated explicitly in the statement.

#### Chris Graham5 years, 8 months ago

Gave some feedback: Has some problems

#### Aiden McCall commented 5 years, 8 months ago

I have added advice to the question.

#### Aiden McCall5 years, 8 months ago

Gave some feedback: Needs to be tested

#### Christian Lawson-Perfect5 years, 8 months ago

Saved a checkpoint:

I've split the parts into separate questions, since they're unrelated.

This leaves the ice cream shop question, and it needs new advice.

#### Christian Lawson-Perfect5 years, 8 months ago

Gave some feedback: Has some problems

#### Hannah Aldous5 years, 8 months ago

Gave some feedback: Needs to be tested

#### Christian Lawson-Perfect5 years, 8 months ago

Gave some feedback: Has some problems

#### Christian Lawson-Perfect5 years, 8 months ago

Saved a checkpoint:

Part d should follow on from c, using the same sequence, and only ask for one (large) term. As it is, I've got to work out the formula for two new sequences and only get marked on the final answer.

Has something gone awry with the ice cream question? Jenny's friends both have tickets with larger numbers than hers. How does that help work out how many people got strawberry before Jenny? Unless you don't want to say explicitly how many flavours there are, that information is sort of a red herring.

#### Hannah Aldous5 years, 8 months ago

Gave some feedback: Needs to be tested

#### Lauren Richards5 years, 8 months ago

Gave some feedback: Has some problems

#### Lauren Richards commented 5 years, 8 months ago

• Typo in part b) - it says sequeces instead of sequences. Also, I think you should separate the different questions in part a) and part b) by i) and ii).
• i) in part c) should be in italics and the writing for the question should be on the line underneath it. I would say the sentences coming after the i) should be capitalised, too. You're missing full stops at the end of the sentences in part c).
• Is part c)ii) necessary? I'm not sure that it is particularly clear and don't think it is testing anything of importance.
• The sequence I got given in part d) was exactly the same as the sequence I got in part c). Is it randomised? Is there a way of making sure you don't get the same sequence? I think I would put part d) as an extension of part c) and get rid of c)ii).
• part e) - not sure that I would say "cycles through" - I think "alternates between sequentially" might be better.
• For part c) in the advice, you have said "We can use the formula to find the 6 term." but in the parts you have managed to formulate it so it says "6th term". Also, maybe at the end of c)ii) advice, reiterate that the answer you get is the value of the 6th term.
• I would definitely make part d)i) to be another section of part c) if the sequence is supposed to be the same.
• I don't think the middle section of the advice for part e) is particularly clear. In the question, I actually don't think I would tell them how many flavours there are, I thinl that should be part of the question.
• There is a typo in the advice for part e) - it says "are" instead of "our".
• I think part a) and b) should be swapped around. For a) they need to know how to calculate the common difference and then use that to generate values but in b) they only need to calculate common differences, which is less difficult.
• I do really like this question, and particularly part e).

#### Hannah Aldous5 years, 9 months ago

Gave some feedback: Needs to be tested

#### Christian Lawson-Perfect5 years, 9 months ago

Gave some feedback: Has some problems

#### Christian Lawson-Perfect commented 5 years, 9 months ago

In part c, I'd ask the student to give an expression for $a_n$ in terms of $n$ before getting them to compute a value. (Or, ask for $a_n$ at a particular small $n$ to check they've got the correspondence right, then ask for an expression, then calculate $a_n$ for a given big $n$)

Part d smells a lot like a fake context. Suppose you're Jenny, and you want to know how many other customers have had the strawberry ice cream before you. What information do you have? You wouldn't be told "the 1st, 6th, 11th, ... customers receive strawberry". You'd either be told "there are five flavours, and the shops cycles through them", or you'd notice that people 5 and 10 places in front of you in the queue also got strawberry. You also need to give a reason for Jenny to know which number customer she is.

Maybe turn it around slightly: Jenny counts $x$ people buy ice creams before her, and the people $y$ and $y+a$ places in front of her got strawberry. How many people were given strawberry before Jenny?

#### Christian Lawson-Perfect commented 5 years, 9 months ago

Before I even look at this question: never say "basic"!!!

#### Hannah Aldous5 years, 9 months ago

Gave some feedback: Needs to be tested

#### Hannah Aldous5 years, 9 months ago

Gave some feedback: Has some problems

#### Bradley Bush commented 5 years, 9 months ago

Great question, I only have a few really pedantic points.

For part b) of the advice, I might add a another step for 2d=\simpifly{variable 1}{variable 2} into the  solution so that you aren't jumping two lines of algebra.

With the equation punctuation in the advice, I'm not sure you are treating every equation like part of a sentence.

Your last line of advice reads "..she is the 31th person", maybe either reword your question so this doesn't happen, remove variables that wont fit the current sentence or alter the "th" to be a variable dependant on the number before it to solve this.

#### Hannah Aldous5 years, 9 months ago

Gave some feedback: Needs to be tested

#### Hannah Aldous5 years, 9 months ago

Created this.
Arithmetic sequences in an ice cream shop Ready to use Hannah Aldous 20/11/2019 14:36
Compute the partial sum of an arithmetic sequence Ready to use Hannah Aldous 20/11/2019 14:36
Finding the $n^{\text{th}}$ Term of a Quadratic Sequence Ready to use Hannah Aldous 20/11/2019 14:39
Identifying different types of sequences Should not be used Hannah Aldous 01/12/2020 16:24
Finding the formula for the $n^{\text{th}}$ term of linear sequences Ready to use Hannah Aldous 20/11/2019 14:39
Partial sum of an arithmetic sequence - birthday money Ready to use Hannah Aldous 20/11/2019 14:41
Find common difference in arithmetic sequences with gaps Ready to use Christian Lawson-Perfect 20/11/2019 14:39
Fill in the gaps in an arithmetic sequence Ready to use Christian Lawson-Perfect 20/11/2019 14:39
Write down and apply the formula for an arithmetic sequence. Ready to use Christian Lawson-Perfect 20/11/2019 14:46
Finding the Formula for the $n^{\text{th}}$ Term of Linear Sequences draft Chris Graham 20/07/2017 15:08
Inbbavathie's copy of Find common difference in arithmetic sequences with gaps draft Inbbavathie Ravi 24/07/2017 03:48
Find a particular term of a sequence using the given formula Ready to use Christian Lawson-Perfect 20/11/2019 14:38
Johan's copy of Write down and apply the formula for an arithmetic sequence. Has some problems Johan Maertens 02/08/2017 17:51
Finding the formula for the $n^{\text{th}}$ term of linear sequences draft steve kilgallon 19/11/2017 08:09
Compute the partial sum of an arithmetic sequence draft steve kilgallon 19/11/2017 08:11
Identifying different types of sequences draft Luis Hernandez 31/12/2018 01:38
Calcular la suma parcial de una sucesión aritmética Ready to use Luis Hernandez 02/12/2020 15:42
Identificar diferentes tipos de sucesiones... Ready to use Luis Hernandez 02/11/2020 02:05
Suma parcial de una secuencia aritmética - Cumpleaños Ready to use Luis Hernandez 02/12/2020 15:42
Encontrar la diferencia común en una Secuencia Aritmética Ready to use Luis Hernandez 02/12/2020 15:42
Encontrar el término de una sucesión usando la fórmula dada... Ready to use Luis Hernandez 02/12/2020 15:42
Encontrar la fórmula para el término $n^{\text {th}}$ de una secuencia lineal Ready to use Luis Hernandez 02/12/2020 15:42
Simon's copy of Write down and apply the formula for an arithmetic sequence. draft Simon Thomas 25/02/2019 10:20
Simon's copy of Find common difference in arithmetic sequences with gaps draft Simon Thomas 25/02/2019 10:24
Simon's copy of Finding the formula for the $n^{\text{th}}$ term of linear sequences draft Simon Thomas 25/02/2019 10:30
Identifying different types of sequences draft Xiaodan Leng 10/07/2019 21:48
Write down and apply the formula for an arithmetic sequence. draft Xiaodan Leng 11/07/2019 01:48
Fill in the gaps in an arithmetic sequence draft Xiaodan Leng 11/07/2019 01:48
Find common difference in arithmetic sequences with gaps draft Xiaodan Leng 11/07/2019 01:49
Compute the partial sum of an arithmetic sequence draft Xiaodan Leng 11/07/2019 01:51
Partial sum of an arithmetic sequence - birthday money draft Xiaodan Leng 11/07/2019 01:54
Arithmetic sequences in an ice cream shop draft Xiaodan Leng 11/07/2019 01:55
Finding the formula for the $n^{\text{th}}$ term of linear sequences draft Xiaodan Leng 11/07/2019 01:55
Find a particular term of a sequence using the given formula draft Xiaodan Leng 11/07/2019 01:56
Finding the $n^{\text{th}}$ Term of a Quadratic Sequence draft Xiaodan Leng 11/07/2019 01:57
Paul's copy of Inbbavathie's copy of Find common difference in arithmetic sequences with gaps draft Paul Verheyen 17/04/2020 12:54
ibrahim's copy of Finding the formula for the $n^{\text{th}}$ term of linear sequences draft ibrahim khatib 21/12/2019 11:17
Sucesiones aritméticas draft David Vanegas 02/12/2020 15:42
Compute the partial sum of an arithmetic sequence Ready to use Vicky Hall 07/10/2020 12:45
Ashley's copy of Identifying different types of sequences draft Ashley Cusack 16/09/2020 20:54
Abrari's copy of Fill in the gaps in an arithmetic sequence Ready to use Abrari Hasmi 19/09/2020 16:58
Compute the sum of an arithmetic series draft Vicky Hall 22/09/2020 13:49
Sequences and Series - Finding the $n^{\text{th}}$ Term of a Quadratic Sequence Ready to use Apodytes-ATG apodytes 25/10/2020 18:53
Sequences and Series - Identifying different types of sequences Ready to use Apodytes-ATG apodytes 25/10/2020 18:54
Sequences and Series - Write down and apply the formula for an arithmetic sequence. Ready to use Apodytes-ATG apodytes 25/10/2020 18:58
Sequences and Series - Compute the partial sum of an arithmetic sequence Ready to use Apodytes-ATG apodytes 25/10/2020 18:51
Sequences and Series - Partial sum of an arithmetic sequence - birthday money Ready to use Apodytes-ATG apodytes 25/10/2020 18:54
Encontrar un término particular de una secuencia dada por una fórmula Ready to use Luis Hernandez 02/12/2020 15:42
Dados los primeros términos de una progresión aritmética, escriba su fórmula ... draft Luis Hernandez 02/12/2020 15:42
Jean jinhua's copy of Identifying different types of sequences Ready to use Jean jinhua Mathias 01/12/2020 15:29
Write down the next 2 terms. Ready to use Dr Palat Meethale Ushasree 02/01/2021 12:50
Missing terms in the sequence Ready to use Dr Palat Meethale Ushasree 02/01/2021 12:50
Compute the sum of an arithmetic series draft Kate Henderson 18/01/2021 12:48
Agnieszka's copy of Write down and apply the formula for an arithmetic sequence. draft Agnieszka Kulacka 27/02/2021 12:44
Kopy of Fill in the gaps in an arithmetic sequence draft Raul Duarte 03/02/2022 17:02
MSP Transition: Compute the sum of an arithmetic series draft Tom Lowe 25/08/2021 20:35
Ugur's copy of Write down and apply the formula for an arithmetic sequence. Ready to use Ugur Efem 12/01/2022 11:45
M1 Terry's copy of Write down and apply the formula for an arithmetic sequence. draft Terry Young 15/12/2021 17:11
M1 Terry's copy of Find a particular term of a sequence using the given formula draft Terry Young 15/12/2021 17:11
Fill in the gaps in an arithmetic sequence Ready to use Arif Hermawan 21/07/2022 01:32
Compute the partial sum of an arithmetic sequence Ready to use Arif Hermawan 21/07/2022 08:02
Finding the formula for the $n^{\text{th}}$ term of linear sequences Ready to use Arif Hermawan 21/07/2022 02:32
Finding the $n^{\text{th}}$ Term of a Quadratic Sequence draft Arif Hermawan 21/07/2022 08:06
Find common difference in arithmetic sequences with gaps Ready to use Arif Hermawan 21/07/2022 08:19
Chris's copy of Write down and apply the formula for an arithmetic sequence. draft Chris Templet 24/08/2022 18:51
Chris's copy of Fill in the gaps in an arithmetic sequence draft Chris Templet 24/08/2022 18:58
Chris's copy of Find common difference in arithmetic sequences with gaps draft Chris Templet 24/08/2022 19:10
Chris's copy of Partial sum of an arithmetic sequence - birthday money draft Chris Templet 24/08/2022 18:37
Chris's copy of Arithmetic sequences in an ice cream shop draft Chris Templet 24/08/2022 19:34
Chris's copy of Finding the formula for the $n^{\text{th}}$ term of linear sequences draft Chris Templet 24/08/2022 18:37
Chris's copy of Compute the partial sum of an arithmetic sequence draft Chris Templet 24/08/2022 18:37
7 - Dilyniannau - 9 draft Angharad Thomas 20/10/2022 10:09

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