| *Activity Name:* | {text-data:name=activityname|width=300px}Penny Boats{Penny Boats}| *How long did it take?* | {text-data:name=activitytime|width=300px}{1 Hour} |
| *Materials:* | {text-data:type=area|name=expenses|width=100%|height=200}\* Aluminum Foil
* Pennies
* Tubs with water |{Penny Boats} |

*Vocabulary to know about for this activity*:
{text-data:type=area|name=vocabulary|width=100%|height=300}{Buoyancy, Force, Density}

*Background/Things to know about for this activity*:
{text-data:type=area|name=background|width=100%|height=300}{A background about buoyancy, how to draw a force diagram for a boat, displacement, etc.}

*Preparation (what should one do to prepare):*:
{text-data:type=area|name=preparation|width=100%|height=300}{Make sure a water source is available}

*Procedure (how to go about the activity):*
{text-data:type=area|name=procedure|width=100%|height=300}{Go over force diagram of a boat, talk about the most effective shapes for a boat. Have students draw their design ideas. Distribute 1 square foot pieces of aluminum foil to each pari of students. After the first designs are complete, allow students to test whether their boat floats. Redesign if needed. Final test should see how many pennies the boats can hold.}
*How can the EDP or engineering design practices be incorporated into this activity?*
{text-data:type=area|name=practices|width=100%|height=300}{Testing the initial designs and then allowing for redesign incorporated this part of the design process. Testing the prototype and discussing how to improve designs is also part of the engineering design process.}

*Comment:* We completed this activity with 5th grade students. It went very well an the teacher was able to get involved with talking about forces and the best designs for the boats. We had multiple tubs of water for testing in order to speed up the process, but it may have been more engaging to have one tub that all the students watched. This way the students could see what kind of designs were successful or not.

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