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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...
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See all"These are excellent resources, ideas and insights for teaching DP Biology. Very useful and user friendly. Totally worth it."
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American School of Rio de Janeiro
"This site provides interesting and comprehensive teaching material which matches the IB standards of learning ."
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SILVER OAKS INTERNATIONAL SCHOOL Sarjapur Bengaluru India
Subscriber comments
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I find these very useful
40 revision sheets "5 essentials" -
Dear InThinking-TeamThere is a mistake in one of the questions of this topic exam. Maybe that's what the previous comment wants to say...Question 7 should say: "a drop blood pH" and not "a rise in blood pH. Best regards, Sasrah
C3.1 Integration of body systems - topic test -
Thanks Jay, I've repaired this link
Eutrophication & Biomagnification (2025)
Lucinda
I agree with Sally - we can no longer provide direct access to students for the topic tests? They are now exclusively accessible to teachers whereas before we had a choice to make them accessible? Would be much easier than downloading and uploading...
Topic tests