Big river journey classroom activity: boats build an aluminum foil boat objective: design a boat that will float and hold many pennies; evaluate the design.. Easy science experiment tin foil boats. in this easy science experiment you will be designing a tin foil boat that will hold the greatest number of pennies.. The best design for an aluminum foil boat would be to try to make it cover as much area as possible. although you still want edges to hold the pennies, you want to.
