Supporting teachers, inspiring students

InThinking Subject Sites

Subscription websites for IB teachers & their classes

Disclaimer: InThinking subject sites are neither endorsed by nor connected with the International Baccalaureate Organisation.

IB Approved Workshops

Mathematics: Applications and interpretation
IB DP Category 2

Barcelona, Spain, 14 - 16 February 2025
Find out more

Mathematics
IB MYP Category 2

Paris, France, 21 - 23 February 2025
Find out more

Mathematics: Analysis and approaches
IB DP Category 2

Berlin, Germany, 28 February - 2 March 2025
Find out more

Find all InThinking Workshops at
inthinking.net

Site authors

Oliver Bowles

Read Oliver's Bio

Jim Noble

Read Jim's Bio

Recommendations

New School (Georgia)

Ia Uruzashvili

Thank you Jim and Oliver, I am using almost all materials for a deep understanding of the subject.

Read all

InThinking

Supporting international schools with high quality PD & interactive online resources

Dynamic
Creative
Personal

About us

Visit our website

Latest updates

See all

Most popular

See all

Blog

See all

You may or may not have seen the prescribed titles for the May 25 ToK essays and so I thought I'd just write a quick post about title number 5. Students are always asked to compare two areas of knowledge...

Subscriber comments

See all

Emily

SL Exam Paper 1D

Also, can you please change the answer key for #5, since the height should be 25, not 50.

22 Nov 2024

Emily

SL Exam Paper 1D

Is Q4 (a) and (b) correct? If I use the midpoint of the frequency table, I got different values for both of them. (I got the mean as 268 and standard deviation as 63.6)

22 Nov 2024

Ewa

HL Functions - Exam Questions

Thanks for such a speedy response, Oliver! Much appreciated ;)

7 Nov 2024

Oliver

HL Functions - Exam Questions

Hi Ewa, thank you, I agree 👍 I'll update the solutions this week-end with this second option of k = 4.00614 (4.01 to 3sf) which would then give a height of 2.91m for peg 'B' (to 3sf) in part (c).

6 Nov 2024