The nurse is observing a group of 8-year-olds who are being taught the concept of conservation of weight. Which of the following activities would best help these children understand this concept?
a) Weighing and measuring each other and comparing the number of pounds to the number of inches for each person.
b) Weighing a pound of oranges and a pound of bricks and counting how many of each make a pound.
c) Measuring the weight of a handful of popcorn and then the weight of a handful of pennies.
d) Using a balance scale to weigh a variety of objects and counting how many pennies must be used to balance the scales.
Answer: Weighing a pound of oranges and a pound of bricks and counting how many of each make a pound.