What does an excellent IBDP Science Internal Investigation look like?


It’s the time of year when grade 12’s are working hard on their internal assessments as the final deadlines draw ever closer. It is often difficult to determine what exactly the IB criteria looks like in a student investigation. To make this easier for students we are sharing exemplars of excellent internal assessments students completed last year. In addition, we are highlighting how they demonstrate the IB criteria. The featured investigation is on factors affecting the ripening of fruit. It was awarded 22/24.

Soft technical skills- setting up a potometer to measure the rate of transpiration




The grade 11 HL Biology students reviewed their knowledge of water transport in plants from IGCSE and then went into more depth describing how water travels through the roots in the apoplastic and symplastic pathways. In addition, they took on the wet and sometimes diffucult task of setting up a potometer to measure the rate of transpiration in a leaf.

Nature Edcasts


Stay up to date with latest science news and research with NatureEcast


Using Sweet Search for reliable sources and references online


There is a wealth of information online which you should make the most of for your own personal research as well as for referencing IB assignments. However, due to the sheer scale of information available there is ften a lack of quality control.


This search engine returns results/websites have been evaluated by other teachers and research experts as being reliable.

You can use this search engine to find references for IB assignments in all of your  subjects.

Use the link above or the sweet search option on the side bar of the blog.

The Immortal Life of Henrietta Lacks


Find out how the cells from one woman (without her or her families knowledge) were used as  building blocks for numerous scientific breakthroughs.


If you would like to read the book, you can borrow it from me.

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