Hi Tim, I question about HL volume of revolution. Which methods would you suggest we teach? I find the syllabus is not specific enough. Is it enough to use the "disc" method or should we also be teaching the "shell" method for more complex...
Integration basicsHi Georgia. Just to let you know that I have uploaded an annotated version of the worked solutions for MockG_AA_HL_P2_2026 that can serve as a markscheme for the mock exam. Hope it helps. Cheers, Tim
Sample Mock ExamsThank you for the great post!
AI and doing mathematicsThank you for the clarification, Tim. Yes, it would great if you could add marks to the worked solutions, it helps me to be more consistent with my marking than if I do it myself... Thanks!
Sample Mock ExamsHi Georgia, Thanks for your query about MockG_AA_HL_P2_2026_v1. Apologies for the confusion about the # of marks for the last two parts of Q.12. Part (c) is 3 marks; part (d)(i) is 2 marks; and part (d)(ii) is 5 marks. I sometimes...
Sample Mock ExamsHi Tim, Really appreciate all you hard work and effort with these mock papers - they are an excellent resource! I have one question and one request for you: Regarding mockg_aa_hl_p2_2026_v1, can you please clarify how the marks are distributed...
Sample Mock ExamsH Konstantinas, Yes - you make a fair point. It's always best to write questions in a way that avoids confusion for the student; and the fact that a student could produce more than three solutions that satisfy the equation is potentially confusing....
Sample Mock ExamsHey Tim, The problem I see here is that all 6 answers work once you go back from thetas to x's. I understand that sin(pi/18)=sin(17pi/18) and so on, but then the solutions should say that you should accept x=sin(pi/18) or x=sin(17pi/18), which...
Sample Mock ExamsHi Konstantinas. Thank you for your query about the worked solutions for MockG_AA_HL_P1_2026_v1. Please note for Q.9, that the restriction is on theta, not x. The cubic equation is in terms of x, not theta. As you said, there should be just three...
Sample Mock Exams
Tim
Site authorHi Jenny. Good question. I cannot recall seeing an IB maths exam question that required a volume to be computed using the shell method. There is no absolute guarantee that would not happen but given the fact that the formulas for volume (one each...
Integration basics