# Models & Representations

By Levi Clancy for Student Reader on *updated *

- Laboratory Methods
- Acids and Bases
- Antibody techniques
- Caenorhabditis elegans
- Cell Culture
- Chemical Kinetics
- Common Laboratory Microbes
- Competition Assay
- Drosophila melanogaster
- Experimental Design by the Scientific Method
- Focus Assay
- Genetic techniques
- Measurement
**Models & Representations**- Mouse Models
- Pathology techniques
- Protein analysis
- Visual Assays

A model is a simplified substitute for the real problem, allowing us to solve the problem in a relatively simple way.

**Analysis models**are previously solved problems that describe either (a) the behavior of some physical entity or (b) the interaction between that entity and the environment.**Geometric models**form geometric constructions of real situations. We then analyze the geometric construction. These are commonly used in trigonometry.**Simplification models**ignore insignificant details.**Structural models**make it easier to understand concepts which are relatively abstract. For example, thinking of an election as a cloud of electron density is a structural model of an electron.

Thinking of problems from different perspectives will oftentimes help you figure things out.

**Mental representations**occur when you imagine a scene based on a description in a word problem. You envision a sequence of events and can predict what will occur in the future.**Pictorial representations**occur when you draw your mental representaition. The drawing describes what you would see if you were observing the situation in the problem.**Simplified pictorial representations**are pictorial representations to which a simplification model has been applied.**Graphic representations**are graphs which represent situations in problems