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.
Figure 2: Photograph of Bacillus anthracis, the cause of anthrax.3. Robert Koch is most known for his development of rules, or postulates that determine the specific agent of infectious disease. His name is well known as one of the founders of medical microbiology.