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Biology
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Berlin, Germany, 30 October - 1 November 2026
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Paris, France, 13 - 15 November 2026
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Environmental systems and societies: A focus on internal assessment
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Focus On: Systems Thinking in the ESS Course
9 October 2026
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Keys to Success: The new Extended Essay in DP Biology (first exams M27)
15 October 2026
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Keys to Success: Teaching Statistics & Data Skills in DP Biology & ESS
3 November 2026
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Getting the most out of InThinking Subject Sites
15 October 2026
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5 Oct 2026
Richard Scarr
It is with great sadness that we have to announce the passing of Richard Scarr. He was always an enthusiastic biologist and a dedicated educator. After reading Biology at Kings College in London he taught...
12 Aug 2026
Exam practice questions
Over the summer we have completed a full set of exam practice question pages, one for each topic. These pages are great for homework or revision. The Exam practice concept; The pages all have “exam practice”...
Recommendations
See all"Incredibly useful resource site - has probably saved me hundreds of hours planning. Plenty of links, worksheets and interactive resources that support the new IB course."
Sarah Jackson
Diocesan School for Girls
"This year is my first year teaching IB Biology. The In Thinking Biology site has proven to be immensely valuable to the quality and delivery of my lessons."
Karin Hartog
D Y Patil International School
Subscriber comments
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A student wishes to use AI to create a simulation that would generate the data for her Biology IA, rather than collecting data experimentally. Provided that she designs the simulation herself and analyzes the resulting data, would this be an acceptable...
IA official assessment criteria -
Thanks David! Thyose are a big help. My students usually have no previous experience with hexagon activities, so early in year one it helps to have a few models so they see what we are going for. (And using them on a provided illustration...
Virus structure & function (2025) -
Dear Lauren, I have just tested a dichotomous key activity with my IB2 class. I will post it here asap.Best wishes, David
Biodiversity of species & DNA
David
Site authorDear Lauren, I've just posted model answers as you requested for this dichotomous key activity. Of course this is just one possible answer, but it will illustrate the method. I realise the bee shapes and colours are quite tricky.Best...
Biodiversity of species & DNA