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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, New Zealand

This is an excellent resource for any IB Biology teacher. David Faure has many years of IB teaching experience and some great ideas and suggestions particularly on the integration of technology in the classroom. We use this as an additional source of...

Maria Schram, British School of Brussels, Belgium

This year is my first year teaching IB Biology. The InThinking Biology site has proven to be immensely valuable to the quality and delivery of my lessons.

Karin Hartog, D Y Patil International School, Belgium

 Blogmore

Uploading IA samples to IBIS?

24 March 2018

In the northern hemisphere only a few weeks remain before the April deadline to upload samples for the Biology IA - the Individual investigation.... more

Struggling to navigate the PRC?

15 January 2018

Since the closure of the OCC and the development of the new programme resource centre (PRC) for official IBO documents I have been taking some... more

Concept based learning

10 January 2018

Concepts in learning provide a support to extend and deepen student understanding. They provide a structure to help students and teachers alike... more

Subscriber comments


  • 20 Apr Katharina Petersen
    Extended Essay titles
    Hi David I have a student who wants to do a behavioral study on the harbour seal(common seal) and possibly the gray seal in her EE. She has access to study two harbour seals and one gray seal in captivity. Would it be okay with only 3 seals...
  • 19 Apr Clarisse Mendoza
    A miracle cure for ulcers
    Hello David, do you have any answer key for the Gastric juice and Endoscopes and Histology worksheet? I tried searching the whole page and website I can't find it. Thanks .
  • #17 is completely wrong...please fix this!! There seems to be a common misconception in enzyme kinetics that assumes all allosteric inhibition is noncompetitive. In reality, allosteric inhibitors can be both competitive and noncompetitive,...
  • 18 Apr Kamran Malik
    Synapses.
    Hi, excellent activities however the synapse diagram statements are in the correct order! Could we get either a word or jumbled up version?
  • 17 Apr Clarisse Mendoza
    Control of digestive secretions
    Dear David do you have an answer key for the SOLO hexagons?
  • First, Thank You for the answer key. We found a few issues though. Sample C has 4 Damselflies, and B has 2 leeches. This changes the Biotic index for C to 48/19=2.53 and B 51/29=1.76
  • Dear David, A student of mine wants to investigate how eating breakfast could impact on brain activity. She wants to conduct a number tests on students who eat breakfast and those that do not and compare the results. Another question she is...
  • This was super helpful! I really appreciated this exercise.
  • Hello David, This is a bit of a cheeky question but do you know when the resource for the IA planning skills lesson - seed germination experiment be ready?! I want to do a practice IA with my DP1 class and we are doing plant biology so this...
  • The revision list is not working for me and I don't think the file is correct?
  • 12 Apr Danielle Jensen
    Evolution test - mark scheme
    I think #5 may be wrong
  • In question number 5 why is ATP not included as helping to control muscle contraction? Says the answer is B 1,3,4 and doesn't include 2 which is ATP.