Will Your Boat Hold the Most Pennies

1
Will Your Boat Hold the Most Pennies?!

• An asynchronous lesson on buoyancy.

2
Materials Needed

• Each group needs
• A roll of foil
• A pencil for each person
• Two pieces of paper for each person
• At the table you will find
• A basket full of pennies
• A large tub of water

3
Group Roles

• Reader reads all directions from the computer
  and controls the power point show.
• Scribe writes down all suggestions from the
  group members
• Materials Specialist gathers all materials for
  the lesson
• Coach makes sure all ideas are being heard and
  encourages group members to participate

4
Here Is Your Mission If You Choose To Accept It!

• As a group, talk about the essentials for making
  a sturdy boat.
• Make sure you write all of the ideas down.
• Draw a diagram of how you will design your boat.

5
Design Your Boat!

• The foil in your roll is all the foil you can use
  to design your boat.
• Make sure everyone participates in putting the
  boat together.
• Decide on a name for your boat as a group!
• Predict how many pennies you can put into your
  boat before it will sink.

6
Group Roles While Testing Your Boat

• Boat Captain places the boat into the water
• Penny Placer drops the pennies into the boat
• Penny Tracker keeps track of how many pennies
  are placed into the boat, count each one loud
  enough for the entire group to hear
• Penny Checker makes sure pennies are being
  counted correctly. Makes sure penny tracker
  stops counting when the penny that makes the boat
  sink is counted.

7
Time For the Big Test!

• Take your boat to the table with the tub of water
  to test it out!
• Table Rules
• Only one group at the table at a time!
• Once your boat sinks, quickly clean up your boat
  and sit back down with your group.
• Record your boats name and how many pennies it
  held on the board for the entire class to see.

8
Communicating Data

• Make a chart like the one shown.
• Record each groups final penny count.

9
What Determined How Many Pennies Your Boat Held?

• When your boat is placed on top of the water, it
  encounters an upward force which is provided by
  the liquid.
• This force is called buoyancy, which allows the
  object to float on the liquid.
• At the same time, the objects gravitational
  force is pushing down on the liquid.

10
What Does That Have To Do With How Many Pennies
My Boat Held?

• The boat floated on the water because its
  downward force weighed less than the upward
  buoyancy force of the water.
• After adding the weight of the pennies to the
  boat, the force of the boat became stronger than
  the waters buoyancy force.
• This caused the boat to sink.

11
While Others Are Finishing Up.

• Click on this link to view a fun video clip about
  buoyancy!
• When the video is over, discuss other objects
  that you encounter everyday that shows the work
  of buoyancy.