Transition to university

Chris Graham on Arithmetic sequences in an ice cream shop 8 years, 4 months ago

Gave some feedback: Has some problems

Chris Graham commented on Transformation - Translation 8 years, 4 months ago

Looks good. I've removed the additional gap, which was causing an error on submission. 

Chris Graham on Transformation - Translation 8 years, 4 months ago

Gave some feedback: Ready to use

Chris Graham commented on Partial sum of an arithmetic sequence - birthday money 8 years, 4 months ago

The step doesn't give enough useful information, and neither does it give the opportunity for the student to break down the question: so the first step would be to find $a_n$, but the step doesn't tell me how to do that. There's an easy opportunity to have gaps here for the common difference, the final term, and so on.

I also have major issues with the context. I'm led to believe Bruce receives 93 slices of his birthday cake on his 50th birthday. How big are these slices? I can only assume that they are getting smaller at a rate inversely proportional to the increase in slices. How about changing to the number of candles? 93 candles on a cake is still a stretch, but slightly more plausible. 

Chris Graham on Partial sum of an arithmetic sequence - birthday money 8 years, 4 months ago

Gave some feedback: Has some problems

Chris Graham commented on Ways of rolling two dice 8 years, 4 months ago

I think that students will find this very confusing indeed. You give an answer at the top, 11 possible outcomes, and refer to an "outcome" as the total value of the two dice. But in the question you are expecting the students to interpret the word "outcome" as the possible values $(a,b)$ that the dice could take.  

I'm also not certain of the benefit of this sort of question to an incoming student.

Chris Graham on Ways of rolling two dice 8 years, 4 months ago

Gave some feedback: Has some problems

Elliott Fletcher commented on Arithmetic sequences in an ice cream shop 8 years, 4 months ago

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

Elliott Fletcher on Arithmetic sequences in an ice cream shop 8 years, 4 months ago

Gave some feedback: Needs to be tested

Chris Graham commented on Arithmetic sequences in an ice cream shop 8 years, 4 months ago

Yes please Elliott

Elliott Fletcher commented on Finding the formula for the $n^{\text{th}}$ term of linear sequences 8 years, 4 months ago

I've added steps to both parts

Elliott Fletcher on Finding the formula for the $n^{\text{th}}$ term of linear sequences 8 years, 4 months ago

Gave some feedback: Needs to be tested

Chris Graham commented on Find the equation of a line through two points - positive gradient 8 years, 4 months ago

RE the point below from Aiden, this is OK, it is giving the student the opportunity to explore the terms in the equation and how they relate to the graph. This sort of question is really for formative use.

Elliott Fletcher commented on Arithmetic sequences in an ice cream shop 8 years, 4 months ago

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

Chris Graham commented on Arithmetic sequences in an ice cream shop 8 years, 4 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 Graham on Arithmetic sequences in an ice cream shop 8 years, 4 months ago

Gave some feedback: Has some problems

Chris Graham commented on Calculating a simple rate of pay 8 years, 4 months ago

Good work making use of the extension. I have removed some of the unused variables, which Christian was mainly including for demo purposes.

Chris Graham on Calculating a simple rate of pay 8 years, 4 months ago

Gave some feedback: Ready to use

Chris Graham commented on Finding the formula for the $n^{\text{th}}$ term of linear sequences 8 years, 4 months ago

Elliott, can you add a step to both parts please, giving the formula and asking the student to identify $a_1$ and $d$

Chris Graham on Finding the formula for the $n^{\text{th}}$ term of linear sequences 8 years, 4 months ago

Gave some feedback: Has some problems