This is a lesson which meets specification points within the WJEC GCSE ‘The Sciences’ Double Award (2026) spec, specifically from Unit 1.1 Cells (Biology).

The lesson starts with a recap on osmosis, children are reminded of the definition for this process. The next slide introduces the investigation that students will undertake today, along with a diagram depicting the main pieces of equipment needed.

Using the slides, the teacher can now go through the pieces of apparatus needed for the investigation, and the method. After this, students will be asked to think about the table of results which will be needed to record their results. The teacher can discuss the options as a class, and draw an example table on the board. Students can then draw their table of results onto the worksheet provided, or a separate piece of paper.

Next, students need to consider the control variables, and the potential sources of error. Again, students can discuss this in pairs/groups, before feeding ideas back to the class. Students should record their control variables and sources of error on the worksheet provided.

After this, students can complete the investigation. Once they have recorded their results, they can answer the analysis questions at the end of the worksheet.

All resources are included. Thanks for looking, if you have any questions please let me know at swyftresources@gmail.com and any feedback would be appreciated.