Separation techniques - Alien's Blood

A series of 2 or 3 lessons that address separation techniques: filtration and paper chromatography.
The filtration uses a mixture of sand, iron filings and water and for chromatography you need filter paper chromatography strip and a suitable colors of felt tip or highlighters.
There are frames provided for students to record their learning on and a second copy for teachers to complete for peer-assessment. The lesson is ideal for learners between 9-14 years of age in science or classroom settings. Please also complete your own risk assessment, specifically around the solvent for chromatography: in my practical I used ethanol as it dissolves pigments in pens. Alternatively, you could try water for water-soluble pens and inks, if necessary.

All images are obtained using creative commons licence or my own images.