KS1: Introduction to Microbes This lesson is designed to introduce students to viruses, bacteria and fungi. The introductory activity allows students to combine their observational and creative skills to make a microbe of their own choice, exploring various microbial types and shapes. Scroll down to find out more and to download the resources. Download the complete lesson Learn about the different types of microbes (viruses, bacteria and fungi), their shapes and sizes, where they can be found and how they ...