An introduction to physical separation techniques, for teachers.
Includes a suggested lesson sequence.

Students try their hand at decanting, as a first step in the cleaning of dirty water.

A demonstration to introduce students to the technique of filtering and to prepare them for the following three activities.

Students begin their exploration of filtration by simulating filtration in nature, through sand.

Students continue their exploration of filtration through following guidelines from the World Health Organisation.

Students discover that rock can be permeable and a great way to filter water!

Students review their understanding of filtration techniques and vocabulary.

Students explore the techniques of evaporation and condensing water to clean it, through viewing a teacher demonstration.

Students examine living things in water by looking at macroscopic organisms and growing bacteria and fungal colonies.

Students review their understanding of physical separation techniques through defining terms and completing a word sleuth.