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These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.

Microbes in Yoghurt

In this experiment students prepare a smear slide of yoghurt and observe Gram stained bacteria using a microscope. The lesson also looks at magnification and representing numbers in standard form.

Curriculum links include:

* Working Scientifically - Experimental Skills and Investigations: use appropriate techniques, apparatus, and materials during fieldwork and laboratory work, paying attention to health and safety

* Working Scientifically - Analysis and Evaluation: apply mathematical concepts and calculate results

* Working Scientifically - Measurement: understand and use SI units

* Biology - Cells and Organisation: cells as the fundamental unit of living organisms, including how to observe, interpret and record cell structure using a light microscope. The functions of the cell wall, cell membrane, cytoplasm, nucleus, vacuole, mitochondria and chloroplasts

* Biology - Nutrition and digestion: the importance of bacteria in the human digestive system

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