Ohaus PRIMER BALANCE Manual - Manual (Page 11)

11
the average egg
OBJECTIVE :
To use averages to make decisions related to how
an object is categorized.
MATERIALS: Primer Balance
3 small and 3 large eggs (hardboiled)
100 one-gram mass pieces
PROCEDURE: 1. Use a felt tip pen to mark the size on each egg:
"s" for small and "I" for large.
2. Find the mass of each egg according to its size:
then calculate the average number of grams for
each egg size. (To find the average, add the
total mass of the eggs and divide the number
of eggs.) Record your answers.
Use the following chart.
3. Discuss whether or not weighing is a good way
to determine egg size.
Small Eggs Mass
Egg #1
Egg #2
Egg #3 _____ grams
_____ grams
_____ grams
Average mass of a small size egg = _____ grams
Large Eggs Mass
Egg #1
Egg #2
Egg #3 _____ grams
_____ grams
_____ grams
Average mass of a small size egg = _____ grams
Standard