### message | statement | description | label:

Food label
* Many food labels claim to be for all rodents, but diet requirements actually vary greatly.
* Most food labels list the amount of saturated fat in that product.
* are a powerful and important mechanism that can influence consumer preferences
  - also useful, both for skill teaching and to discuss nutritional values
  - the most recognized and useful nutrition information tool in the United States
* can be a useful guide to choosing packaged foods lower in saturated fat.
* come on all packaged foods.
* do include fiber as part of the total carb content.
* list fat in grams.
* list ingredients by weight, with the largest amount first
  - in order of amount present in the food, from most to least
  - nutrition information, including fat calories
* list the amount of sodium in a serving
  - the food in milligrams
  - fiber content of the food
  - grams of dietary fiber per serving
* provide information in the list of ingredients and on the nutrition label
  - nearly adequate data to enable the individual to control carbohydrate intake
* require information on food content to be displayed.
* show carbohydrate content
  - the amount of fiber in a serving
* tell how many carbohydrates a food has in it.

Specification
* Describe the role of specifications in determining quality.
* are descriptions
  - documents
  - frequently the name of a particular bacterium
  - naming
* include development.
* provide mechanisms.
* use manufacture techniques.
* use modern manufacture techniques

### message | statement | description | specification:

Formal specification
* method to describe computer system for software development purposes.
* refers to the use of such a specification language in writing specifications.

Word picture
* are descriptions.
* consist of words plus arrows, lines, boxes and distinctive positions.

### message | statement:

Equation
* Has all the mathematical functions.
* Many equations used in physical science are statements of physics laws.
* Most equations govern behavior.
* Most equations have real values
  - simple solutions
* Solve linear and quadratic equations.
* Some equations describe atmospheric motion
  - conductivity
  - physical properties
  - waves
  - explain photosynthesis
  - govern theories
* Some equations have plane waves
  - relate to body weight
  - show mechanical energy
* are a shorthand way of expressing a definition or concept
  - type of object
  - equalizations
  - guides to thinking about how an impact on one variable effects another
  - located in blackboards
  - statements which say that two quantities are equal
  - the language of mathematics
  - useful for relating variables and numbers
* arise as a way of asking and answering questions involving functional relationships.
* cause problems
  - systematic problems
* contain compounds
* describe diameter growth
* describe logistic growth
  - population growth
* explain facts
  - observations
* give equations
  - ideas
* have important limitations
  - practical values
* have real practical values
* is the state of being equally balanced.
* mathematical statement
* provide explanations
  - sufficient explanations
* represent values.
* require knowledge.
* show impact
  - results
+ Equality (mathematics): Mathematics :: Geometry
  * Equivalence in a more general sense is provided by the construction of an equivalence relation between two sets, that is, the two sets have exactly the same elements. The sets do not need to be finite to be equal. A statement that two expressions denote equal quantities is an equation. Equations are equal. Inequalities are unequal.

### message | statement | equation:

Chemical equation
* describe chemical reactions.
* represent changes that take place in a reaction
* use the Latin abbreviations.