1) Using your ruler, measure the diameter in centimeters
of your whole cookie. Record your measurement on the student data
sheet.
2) Observe the whole cookie. Make a prediction,
without
counting or breaking the cookie, how many chips do you think are
in your cookie? Record.
3) Weigh your whole cookie in grams. Record.
4) Place your whole cookie inside the plastic bag.
Make sure you squeeze out most of the air. SEAL THE BAG CLOSED!
5) Stand up and forcefully drop the cookie bag to the
floor directly in front of you. CAUTION: Make sure you have
enough room around you so you do not hit anyone or anything.
6) Repeat this about five times or until the cookie is
crumbled.
7) Empty the contents of your bag onto your plate.
8) Use the toothpicks to carefully separate the cookie
crumbs from the chocolate chips. Make two piles on your plate.
9) Count the number of chocolate chips. Record.
10) Weigh just your chocolate chips in grams, making sure
the cookie crumbs are off the chips. Record.
11) Calculate the percentage of chocolate in each
cookie. Record.
(HINT:
Divide the weight of the chips by the weight of the whole cookie)
