| LESSON 4.  Engineering 
  a Solution 
   There are many problems 
  in the world.  Scientists investigate problems through different types 
  of experiments and observations, but engineers design different types 
  of solutions.   Engineers try to solve problems for society.  They design 
  structures that allow politicians, builders, and other planners to make 
  decisions for society.   Engineers are the link between science and 
  mathematics.  Design is an important component to the scientific 
  method. 
   Engineers consider many 
  factors that would allow a product to be used.  They analyze using 
  mathematical skills to see if the design is good.   For example, in building a 
  bridge, an engineer would have to consider many things including the types of 
  materials and how to build them to be safe and sturdy.  They would create 
  exact designs that allow builders to create a structure.  Engineers usually 
  test their designs with computer simulations and real models. |