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Subscriber comments

Nisar

Sample Explorations

Hi - do you have examiner comments for sample G (Probability) Thanks

Tim

Sample Mock Exams

Hi Sid, Great to hear from you - and a good question. The IB accepts an equal sign in front of an answer that has been approximated. However, I do think there are some things - and this is one of them - that even though it is acceptable from an IB...

Siddharth

Sample Mock Exams

Hi Tim, Just wanted to clarify if students are required to write the "approximate equals" if they round the final answer to 3 significant figures? My impression was that a regular equals is fine, but noticed that you always use that. Thanks, Sid

Tim

Integration basics

Hi Grant, Thanks for spotting the error in the answer for Q.9. Should have been an exponent of 4 outside the brackets, (x^2-1)^4, rather than an exponent of 2. Although 'minimal', it still was very incorrect. Thanks for bringing that to my attention....

grant

Integration basics

I believe there is a mistake on AA_SL_5.10_integration_practice1_v1question...

Teresa

2. Functions

Perfect. Thank you so much Garry.

Tim

2. Functions

Hi Teresa, Definitely teach partial fractions (only certain configurations) to your HL students. It is listed in the syllabus at HL 1.11 where it states: Partial fractions; maximum of two distinct linear terms in the denominator,...

Teresa

2. Functions

I have another question (sorry!). Should I teach partial fractions? And if so only with linear denominators or also the other cases of proper fractions? Thank you.

Teresa

2. Functions

Thank you so much Tim. I am goint to tecah them one method. As it is the first time I am teaching this Syllabus, I don´t want to spend too much time in topics that are not in the guide, unless, like you said, altough not mentioned they are usefull.

Madhu

Differentiation basics

Hi this is very helpful for preparing the students for the exams