This is a simple activity to visualize a communication system.
In order to do this the students encode, decode, transmit,
receive and store messages. They will use a code sheet and
flashlight for this process. They will also maintain a storage
sheet from which they can retrieve information as and when it is
required. Water reclamation plant In this video clip, students
see how wastewater is treated at a water reclamation plant. One
of the plant's operators gives Bob the Vid Tec (a children's
programming host) a tour of the plant, describing along the way
what happens at each step in the water treatment process. For
example, the operator explains that microorganisms are used to
consume human waste in the biological nutrient removal step. Bob
also talks with another plant operator about why kids should
learn about wastewater treatmen Box Plot 2 This activity allows
the user to explore maximum, minimum, median, upper quartile,
lower quartile and outliers while learning how to draw box
plots. University of Iowa :