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Sent in by:
Amber of South Amherst, OH
The pennies are back with added change for an added challenge.
- different size coins like a penny, quarter, nickel, or dime
- paper towels
- water dropper
- water in a cup
- paper and a pen or pencil to keep track of your data
- How many drops of water can you fit on a penny? How about a quarter? Make a prediction. Start by putting one drop of water on a penny. Now, how many more do you think it can hold? Why?
- Keep adding drops to see how your prediction turns out. Remember to keep track of your data. Do it three times and then figure out the average number of drops that can fit on a penny.
- Next, try it with a quarter. Make a prediction.
- Use what you know about how many drops of water the penny held.
- Keep adding drops to see how your prediction turns out. Do it three times and then figure out the average number of drops that can fit on a quarter.
- Compare the number of drops the penny held to the quarter.
Now it's time for you to experiment. Think of a question that you want answered. Like, do all pennies hold the same amount of water? What other things besides size affect the number of drops each coin can hold? Write down what you thought was going to happen and what did happen. Then test out your question and send your reports in to our special feedback area. Every week, we'll publish a whole bunch.
Ashely, age 11 of Bronx, NY wrote:
I put the water in a penny and the number I got was??? 21 drops of water on the penny. it was so cool.
Mia, age 11 of CT wrote:
This experiment is so cool! I got 27 on the quarter and 15 on the penny.
Ella, age 10 wrote:
when the droper put on 3 drops it the water spills off of it.
Danielle, age 9 wrote:
i put 2 drops on the pennie and it overflew! It was a fun experment!
Lisa, age 11 of Shakopee, MN wrote:
for the pennies, there where different numbers and for the dimes, they where all the same number. for the nickles and quarters, the quarters where 299, and 298 and then the nickles where the most because they where 300, and in between 302.
Jackson, age 11 of Dallas, TX wrote:
I got 60 my first try then 126 then 160! For real!!
Luke, age 9 of Dallas, TX wrote:
I got 35 on my first try then I got 48
Veronica & Mary Kate of MB, SC wrote:
The penny had only an average of eleven, while the dime had anaverage of 18, the nickel had an average of 27, and the quarter had an average of 34.
Connie, age 11 of MB, SC wrote:
frist time it was 18 then it was 20 then 26
Haley, age 11 of Myrtle Beach, SC wrote:
26, 34. 3, 12, 19. 6
Joanne and Sarai, age 10 of MB, SC wrote:
17, 19, 31, 34
Monique & Serena, age 11 of MB, SC wrote:
17, 34, 39. 3, 35. 6.
Chirs & Jazmine, age 10 of MB, SC wrote:
21, 16, 20, 24
ZOOM Fans, age 9 of MB, SC wrote:
My apartner and I found that 40 drops
Mitchell & Samuel, age 10 of MB, SC wrote:
We averaged 19. 33 drops on the penny, 17. 67 for the dime, and 24. 67 on the quarter and nickel.
Joceln & Sarah, age 10 of MB, SC wrote:
We got twenty eight drops on the penny
Bleu & Jubril, age 11 of MB, SC wrote:
17 17 12 28
Rose and Rashana, age 10 of MB, SC wrote:
When we did this expeiriment our coins looked like it had a protective bubble over it then when it overflowed with water the puddle expanded and the next coin was expeirimented with the same way.
Cooper, age 10 of MB, SC wrote:
The water on the penny started to stack then it all slid of. It ended up holing 23 total dropes of water.
Kevin & Tymeke, age 11 of MB, SC wrote:
14 drops on the penny. 40 drops on the dime. 25 drops on the nickel. 45 drops on the quarter.
Sarah and Angela, age 10 of MB, SC wrote:
Some of our predictions came true. and sometimes they were wrong. We didn't know that it would be some many drops on the coins.
Charlie and Austin, age 11 of MB, SC wrote:
we got 12 drop on the penny. we got 31 drop on the dime. we got 22. 3 on the nickel we got 37. 2 on the quarter.
Sarah and Tatum, age 10 of MB, SC wrote:
It held held more drods than we thought it would hold.
Michael, age 10 of Myrtle Beach, SC wrote:
I got 20 drops on the penny.
Stephanie & Allison, age 9 of MB, SC wrote:
our average for the penny was 25.
Nicholas and Joshua, age 9 of MB, SC wrote:
10, 14, 25, 27
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