Remediation/Remedial activity Go through the lists that learners have compiled in the class. Topic 3 Micro-organisms Unit 1 Types of micro-organisms Learner’s Book pages 48–51 Unit overview


In this unit, learners will find out about the smallest living things called micro- organisms. They will learn that these can only be seen under magnification and they will be introduced to some micro-organisms such as viruses, bacteria, protists and fungi.


Resources


Hand lenses/magnifying glasses or micro viewers, bread mould, newsprint, micrographs of micro-organisms with scale bars Teaching guidelines


Begin this unit by asking learners whether they know what causes humans to suffer from flu, or whether they know where antibiotics used to treat certain illnesses come from. Background knowledge


The four groups of micro-organisms covered in this unit are bacteria, protists (unicellular algae belong to this group), viruses and fungi.


Activity 1 Use hand lenses to examine bread mould and newsprint


Learner’s Book page 50 Guidelines to implement this activity


• This is a pair activity. • A few days in advance of carrying out this activity, take some bread slices and generate some bread mould.


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