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  • 15 June 2024
    Zoe Badcock
    The Dilemma of DDT
    Hi Bogdan, I've answered your question here
  • 15 June 2024
    Zoe Badcock
    1.5 Humans and Pollution
    Hi Bogdan, making an markscheme can be a fraught experience and sometimes things are excluded that you have to scratch your head about. The important thing from the IB team's perspective is that it is standardised and everyone marks the same...
  • 15 June 2024
    Zoe Badcock
    2.4 Comparing Biomes
    Hi Pamela,It is task 2 on this page https://thinkib.net/ess/page/25952/24-climatographs. Following making climatographs for various locations then you can get them to make a giant island on a big piece of "butcher" paper - the rolls that you...
  • 14 June 2024
    Bogdan Oros
    The Dilemma of DDT
    Hi, I have a question in regards to the marking scheme and a student response. A 4 mark question was phrased on a previous exam the following way ' Identify four factors which make the use of insecticide DDT controversial' . A student wrote...