InThinking Subject Sites

Subscription websites for IB teachers & their classes

Disclaimer: InThinking subject sites are neither endorsed by nor connected with the International Baccalaureate Organisation.

Student access tools

You need to log-in or subscribe in order to use Student access.

2.1: Barnacle competition

Here is a great activity that is designed to help you understand more about the concept of competitive exclusion as it relates to two species of barnacles. The activity will take around 20 mins to complete

To access the contents of this site, your teacher must grant you access.

DP ESS

InThinking Subject Sites

InThinking Subject Sites for IB Teachers and their Classes

Supporting IB educators

Developing great materials

Integrating student access

Meeting schools' needs

2.1: Barnacle competition