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 (New Syllabus)
IB DP Category 1
Berlin, Germany, 30 October - 1 November 2026
Find out more
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
InThinking Shorts
Find all InThinking events at
inthinking.net
Quote of the day
It's not as though we can keep burning coal in our power plants. Coal is a finite resource, too. We must find alternatives, and it's a better idea to find alternatives sooner then wait until we run out of coal."
InThinking
Supporting international schools with high quality PD & interactive online resources
Creative
Personal
Selected student pages
See allMost popular
See allRecommendations
See all"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
"I really love that you have so many activities and video that would engage in classes. All the teaching material are ready to use; and the tests and annotated marking of works are super helpful!"
Sov Atkinson
Atlantic College
Subscriber comments
-
Do you have a markscheme for this practice question?
HL 4.2 Inequitable Access to Water: Marginalised Groups -
P.S. In addition, with the low ranking values 1-5 would Kendall's Tau stats test be better than Spearman's Rank?
Independent Investigation - IA -
Hi Zoe and Lisa, Quick query regarding stats tests - I've always advised using chi-square of independence when analysing survey data using likert scales for example age group vs behaviour and that this stats test works really well. However,...
Independent Investigation - IA
Zoe
Site authorAh thank you Christophe, I will have to edit and republish that page. I wrote it for the last curriculum but it's still useful.
6.2 Climate Change Impacts on Ecosystems