Home of real teaching & learning
- Full support for teachers
- Focus on critical thinking
- Engaging classroom activities
- Integrated student eBook
- Assessed tasks / qBank
- Practice exam questions
The InThinking Guarantee: Our sites are written by expert practitioners and not by AI
See our AI policyDisclaimer: InThinking subject sites are neither endorsed by nor connected with the International Baccalaureate Organisation.
Don't miss out, find out!
- Free trials Take out a one month free trial today!
- Newsletters Subscribe to our FREE subject site newsletters.
Recommendations
Read what users are saying about the site.Video overview
Site authors
IB Approved Workshops
Environmental systems and societies: A focus on internal assessment
IB DP Category 3
Paris, France, 13 - 15 November 2026
Find out more
Environmental systems and societies (New Syllabus)
IB DP Category 2
Paris, France, 19 - 21 February 2027
Find out more
Virtual Think-Ins
Focus On: IB Teaching – A Practical Guide for Teachers new to the IB
20 November 2026
Find out more
Keys to Success: The IA in DP ESS: Initiating & managing
23 November 2026
Find out more
Focus On: Systems Thinking in the ESS Course
1 December 2026
Find out more
Find all InThinking events at
inthinking.net
Quote of the day
Faced with a choice between the survival of the planet and a new set of matching tableware, most people would choose the tableware.
InThinking
Supporting international schools with high quality PD & interactive online resources
Creative
Personal
Selected student pages
See allMost popular
See allRecommendations
See all"An excellent resource for new teachers, putting together the first syllabus. It also helps more experienced teachers with new idea and new perspectives."
Nathan Hughes
TASIS
"The ESS InThinking site is an excellent resource. Although I’ve taught IB Bio for many years, I started teaching ESS a year ago, and I found that the approach to the IB ESScourse was very different. I found that daunting. The ESS resources provide..."
Tim Gurney
American School of The Hague
Subscriber comments
-
hello i can't find the activities for HL eco and HL ethics
HL.b Environmental Economics Activities -
Hello Laura and Zoe, Thanks for making this activity. It was a great starter for my class. I also noticed that on p1 of the card sort activity, for 'herbivore' it shows a picture of a tree - I guess there could be a caterpillar chewing...
SL/HL 2.2 Vocabulary for 2.2 Card Sort -
do we have a model answer for this ? @Zoe @Laura
HL 4.2 Citizen Science for Equitable Access to Water
Vaida
Hi, Zoe, I have a question about the exam (any ESS exam). My students are asking: "If I use an ESS term in my response, such as keystone species, trophic cascade, or any other specific term, do I have to provide a definition as well?" It's...
Early Year 1 Exam