ATL in Biology
Limits and zones lab
This lesson begins by getting students to consider what it is like to be a small plant growing in some dunes. Understanding the needs of an individual illustrates the concepts of limits of tolerance...
Activities
Lincoln Index activities (2025)
How do biologists make estimates of the number of giant pandas left in the wild? Because animals often move and hide this task is really difficult but the Lincoln index provides a solution. In this activity...
eBook
B4.1 Adaptation to env - student friendly summary
This is a 'student friendly' summary list of the DP Biology guide for Topic B4.1 Blue text shows extra clarification or guidance. Guiding questions• How are the adaptations and habitats of species related?•...
Activities
Changes in blood supply - model answers
These are suggested model answers for the activity Blood flow changes in organs worksheet As model answers they don't cover all the possible options for correct responses, but they provide a very good...
eBook
D3.3 Homeostasis - student friendly summary
This is a 'student friendly' summary list of the IB DP Biology Guide for Topic D3.3 Homeostasis Continuity and change - Organisms SL: 2 hours AHL: 2 hours Guiding questions This ensures that the...
Activities
Changes in blood supply (2025)
6 litres of blood gets pumped round the human body constantly. However, the blood supply can be altered depending on which organs require it. This change in pattern of blood supply can be seen when we...
eBook
B3.2 Transport - Student friendly summary
This is a student friendly summary list of the IB DP Biology Guide for Topic B3.2 Transport Form and function - Organisms SL and HL: 3 hours AHL: 2 hours Guiding questions Capillaries, arteries and...
Activities
Glucose homeostasis (2025)
This lesson introduces the way insulin and glucagon control blood glucose levels. Students arrange SOLO hexagons to explain the homeostasis process and to build on their prior knowledge of insulin or...
Activities
Homeostasis & thermoregulation - model answers
These are suggested model answers for the activity Thermoregulation comprehension As model answers they don't cover all the possible options for correct responses, but they provide a very good guide...
Activities
Neurons and resting potential - model answers
These are suggested model answers for the activity Structure of neurons worksheet As model answers they don't cover all the possible options for correct responses, but they provide a very good guide...