eBook
B1.2 Proteins 2° structure - written task
This structured question is in the style of an IB exam questions in paper 2. It has a particular emphasis on the concept of molecular shape, the theme of form and function. Specifically this question...
Assessment - introduction
IA official assessment criteria Free
In this page you will find the IB wording for the Official IA assessment criteria. on MyIB. I have made two different assessment criteria sheets that are easier to print, There is also a template for...
Assessment - introduction
IA teacher comments sheet
This template for teacher marking notes could be used to record information for the moderator. This information helps the moderator agree with your marking, so long as you have followed the assessment...
Assessment - introduction
The new Investigation from 2025
The changes to the IA (Internal assessment) in 2025 was more of an evolution than a revolution. There are several improvements and many aspects of the new assessment criteria which will be familiar to...
eBook
B1.1 Carbohydrates - Written tasks
These written tasks are designed to help students to practise using their knowledge and skills. In the topic of carbohydrates and lipids this includes the use of SI unit prefixes, identification of monosaccharides,...
Activities
Modelling energy with pyramid diagrams (2025)
To investigate energy in ecosystems uses the concepts of "trophic levels". This activityexplains how to build a pyramid of energy and then how to use it to illustrate the differences in energy conversion...
Activities
Sexual selection examples (2025)
This activity looks at two interesting examples of natural selection in action. The first is the sexual selection of mates in birds-of-paradise. These birds have bright feathers and complex songs and...
Activities
Guppy evolution - model answers
These are suggested model answers for the activity Guppy evolution IB-style questions on the page Sexual selection examples (2025).As model answers they don't cover all the possible options for correct...
Activities
Species & their karyograms (2025)
In three activities student explore how chromosome number is a characteristic feature of a species. . Gradual divergence of the genes within two isolated populations is illustrated by examples of magpies...
Activities
Activity 3 - Human chromosome #2 - model answers
This page shows suggestions of model answers for the Human chromosome number two - see for yourself activity on the page Species & their karyograms (2025) These are suggestions, not a mark scheme, and...