28 July 2017

Casio Calculator Pricing

The idea for this all started in June 2017. With new calculators for A Level and much parental confusion about what Year 7 students should be buying, I asked:

So here it is!

These are the current UK prices for the 3 newest models of Casio calculator for schools.
You will find cheaper prices on eBay and Amazon for some products, but they may be from overseas, not contain UK manuals, or be programmed in a different language. Bulk orders may incur customs duty.

Let me know if you see any cheaper deals: email adamcreen@hotmail.com or tweet @adamcreen

Last update: 23rd September

Casio fx-83/85GT+
For Years 7 to 11

This calculator is the best one to buy for GCSE

It is not suitable for A Level even if the pack says so
The fx-85 is the solar model, but always buy whichever is cheapest, solar or not makes no difference
May be available in black, pink, blue and white, but STILL buy whichever is cheapest!

  • Wilko: £5.50 reduced from £8.50 - Best Buy
  • Asda: £8.00 reduced from £12.00
  • Staples: £8.35 reduced from £10.00
  • Sainsburys: £9.00 reduced from £12.00
  • Ryman: £9.99 reduced from £13.99
  • Tesco: £9.99
  • Argos: £9.99
  • WH Smith: £9.99 reduced from £12.49

School Suppliers (ex VAT/inc VAT) - discounts for bulk orders:

Casio fx-991EX Classwiz
for A Level

This calculator is the best one to buy for A Level

90 day free emulator offer: https://edu.casio.com/products/classroom/classwiz/

  • Ryman: £24.99 reduced from £29.99 - new reduction and Best Buy
  • WHSmith: £27.99 reduced from £34.99
  • Argos: £28.99
  • Tesco / Tesco Direct: £25.00
  • Staples: £35.99
School Suppliers (ex VAT/inc VAT) - discounts for bulk orders:

Casio fx-CG50 graphic calculator

This is not a requirement for any GCSE or A Level course

1 year free emulator offer: https://education.casio.co.uk/1-year-emulator-licence-offer/


  • Tesco Direct: £125.00 reduced from £140.00 - still reduced and Best Buy
  • Ryman: £129.99 reduced from £199.99
  • Staples: £162.00
School Suppliers (ex VAT/inc VAT) - discounts for bulk orders:

5 July 2017

Pearson Textbook Corrections

This page will be kept updated with any corrections needed for the new 2017 Pearson A Level Maths textbooks. This includes in notes, exercises, answers or Solutionbank.
Please send any errors you find to adamcreen@hotmail.com or tweet @adamcreen
Thanks to: @drfrostmaths@iisrootminusone, @meganguinan1, Chandler Cranfield

Year 1 Pure

page 39, section 3.1
amend to:
"Linear simultaneous equations in two unknowns, that are neither equivalent nor contradictory, have one set of values that will make a pair of equations true at the same time."

page 50, example 11
first line of the solution should say >2 rather than >x, in order to match the question

Year 1 Applied

Please visit this site about the new version of this book

Check your ISBN:
9781 292 18328 2 is the OLD uncorrected version 1
9781 292 23253 9 is the NEW corrected version 2

There is a PDF listing the changes made, which can be downloaded from here (please let me know if this link doesn't work)

Even the new version does NOT correct the following errors, so I am leaving them here:

page 66 question 3 part a)
on the graph, amend the x axis label to "Number of items (n)"

page 67 question 5 part c)
there is a mismatch between the question and the answer
amend to:
"The equation of the regression line of g on t for the remaining data is g = 44.9 - 0.47t
c) Give an interpretation of the value -0.47 in this regression equation"

page 103 example 4
uses 0.001 when 0.01 meant, and the critical region is completely wrong

page 216 Mixed Exercise 4 question 5 part c)
amend to:
"If the temperature increases by approximately 1 degree C, the number of pairs of gloves sold each month decreases by 0.47."
The Solutionbank answer for this uses the regression line of t on g as given, but has a totally different answer for part c based on 10 gloves predicting a 1.8 degree drop of temperature.

page 223 Exercise 8A question 3 part c)
amend to "k = 10 metres" (not seconds)

page 146 question 11 part b)
amend to "x-coordinate -8" (not -28) to yield the answer in the back

page 227 Exercise 10B question 5 part b) iii
amend the bearing to "036.9"

page 230 Review Exercise 2
question 12 no answers given
part b) should be 2.5ms-2 for the trailer and 2.17ms-2 for the car
question 19 no answers given
part a) should be a = 6 - 3t^1/2  and part b) s = 3t^2 - (4/5)t^5/2