What to do DIVIDE the class into groups of four students with the following roles:
Class GOES outside to a field of grass. Equipment Handlers PLACE the dowel square where the group wants to work. Group members each COUNT the grass blades inside a section of the square. Recorders WRITE the number of blades each student counts on the data collection sheet.
Equipment Handlers WALK
the square along each side of the field to determine its length
and width. Recorders WRITE the length and width of the field
on the data collection sheet.
Speakers FILL OUT the
data collection sheet to determine
the total number of blades of grass in the field. SPEAKERS report
their results to the class. COMPARE each group's results. We used this method at the Miami Museum of Science. Our field is about 3,600 square meters and there were about 1,300,000 blades of St. Augustine grass. What's Happening? Find out more about large numbers and pH. Challenge. How
many truck loads of jelly beans would it take to illustrate the
National Debt?
About 100,000 jelly beans will fit in a truck, and one jelly
bean equals one dollar. Share your ideas in the pH
Exchange.
