The link from Penncrest High School in addition part is not working.
Properties of Water (2025)Dear Lauren, Thanks for pointing out this link mixup. I have updated it today. Best wishes, David
A1.2 Nucleic acids - Planning sheetDear Marina, Thanks for your comment. The model answers were in hidden boxes, which I think you must have missed. I have updated the page so that they are always visible, which is an improvement, so thank you for the suggestion.Best...
Endosymbiosis - Model answers (2025)Samuel Good morning. There are MC questions and Paper 2questions for practice and the topic tests for the end of the topic. By the end of September, there will also be Applications of Skills questions. All have model answers or mark schemes
Light Dependent Reactions (2025)Are there any multiple choice assessments to help students practice?
Light Dependent Reactions (2025)The Link for RNA and DNA Structure on this page goes to old syllabus link rather than the 2025 version
A1.2 Nucleic acids - Planning sheetCould you please upload the mark scheme of the Endosymbiosis worksheet?
Endosymbiosis - Model answers (2025)Zipporah It is not an ms as such but what you need is in the "Teacher only" box.
Transport in plants (2025)https://thinkib.net/media/ib/biology/files/activity%20worksheets/electron_micro_det_ibstyle_answers.pdf...
Cell types detective activity - model answers
Rahul
Thank You David, I have got a lot of clarity ...
IA Analysis - ANOVA or t-test?