Cells and microbes are found everywhere, from inside your mouth to the puddle in your backyard. The simple experiments in this book will help readers begin to understand this important topic. If they are interested in competing in science fairs, this book contains great suggestions and ideas for further experiments.

A collection of science experiments about cells and microbes with emphasis on using the scientific method.

Contains science projects that concern the relationship between living things and their environment.

First published in 1927.