- Foam cubes - it doesn't matter what the size is unless it's really small. 1 inch foam cubes work pretty well.
- Small cups to hold pennies (tiny cups you'd get from a dentist's office)
- Paper clips
- Pennies (up to 700 pennies)
- Plastic tub (to catch the pennies if/when the bridge collapses)
- Hand out a tube of foam cubes and ~250 toothpicks to each team of students.
- Build whatever shape the team wants to build.
- Build, test, & build, again!
2nd graders - last year, 298 pennies
3rd graders - this year, 250 pennies
4th graders - this year, 450 pennies
5th graders - this year, 650 pennies
I don't have a lot of class pictures because I have to load the pennies very carefully, evening out the load on the bridge. So, the teachers take the pictures, but I haven't received the pictures, yet. So, here's what I have.
|~150 pennies in the right and the left cups each|
Try this one at home and have a wonderful time.
P.S. - The only problem with this project is that the foam cubes are quite expensive (between $17.95 - $24.95 per 102 cubes), and we can't keep reusing the foam cubes. So, it does get expensive for a class project when I try to collect $10/year/student for the science projects. If you know where I can get them cheaper, please let me know.