An argument for a mathematics program that is more compatible with the nature of the learner is therefore an argument for a greater degree of involvement with manipulative materials and exploitation of appropriate mathematical applications.
The Germ theory of disease, developed in the 1860s and 1870s by Louis Pasteur, states that tiny living beings are the cause of infectious diseases. The theory was developed to explain puerperal fever, or Child bed fever.
The Germ Theory The crowning achievement of his career was his germ theory of disease. It brought to the open how specific microorganisms can bring about important diseases such as cholera, diphtheria, scarlet fever, childbirth fever, syphilis and smallpox.