Blog
Grade boundaries for the new IA Free
Since the publication of this summer's IB results this week we now know the grade boundaries for the new style IAs. They are surprisingly exactly the same as the boundaries we have used for the last seven...
IB Core
TOK - Introductions Free
TOK introduces students to the strengths and weaknesses of the different ways that we know things. It's a training in critical thinking, an introduction to philosophy and one of the reasons why the IB...
eBook
B4.2 Skulls & diet - written task
This structured extension question is in the style of the structured IB exam questions from paper 2. It is focused on the form and function of organs in the digestive system including Hominid skulls...
eBook
A4.2 Conservation methods - written task
This structured extension question is in the style of the IB exam questions but it has a particular emphasis on conservation methods for the protection of biodiversity. It uses the "Explain" command term,...
Activities
Neurons and resting potential (2025)
This series of activities introduces neurons as the specialised cells in the nervous system. These are specially adapted to be able to generate a resting potential and then carry electrical nerve impulses,...
Activities
Model answers - PKU disease IB style qns
The document below shows suggested model answers to the questions on PKU disease IB style questions which is found on the page Theoretical Genetics 2 (2025) Please notes these are suggestions of good...
Activities
Phenotypic plasticity & recessive alleles (2025)
This activity provides a great opportunity for students to learn about some interesting exmples of genetics. The first section covers phenotypic plasticity, this is followed by a recessive allele causing...
Activities
Model answers: Co-dominance & Multiple Alleles
How many different alleles are there in the six genotypes? Three Which are the alleles in human blood groups which show co-dominance? IA and IB Suppose that Adam was heterozygous for blood group...
Activities
Theoretical Genetics 2 (2025)
Beginning with a review of the punnet square questions from last lesson, students are then introduced to some more complex genetics using the example of human blood groups. Teacher led Description of...
Activities
Model answers - Punnet square qns
Below are model answers for the worksheet Theoretical genetics - punnet square questions on the page Theoretical genetics intro (2025) Please remember these are model answers, not a mark scheme, and...