Attempt 1

We designed a flat bottomed boat with curved sides. A sketch of our plan is pictured below.


Design Strengths:
- large surface space = distributes weight
- rounded bottom = improves floatation
- thicker rim = balance; slows seeping water over


We then constructed our boat.

Above is an image of Trenton shaping our boat.
Above is an image of our completed boat.

Our boat held 58 pennies.
I sank because it became too heavy.

Water seeped into the sides of our boat over the edges.
Many other boats with flat bottoms were successful.

Attempt 2

We revised our design, keeping the flat bottom but making the boat wider and flatter, and we crinkled the foil trying to make it thicker.


Design Strengths:
- wider bottom = more area to spread weight
- rounded bottom = improves floatation
- thicker rim = balance; slows seeping water over
- crinkled bottom = thicker tinfoil


Then we constructed our boat.

Above is a side view image of our second boat.
Above is a top view of our second boat.

Our boat held 36 pennies.
I sank because it became too heavy in the center.