Can you design your own roller coaster? What materials would you use? Would you use pool noodles or another material? How many different designs could you build? Which design would work the best? Which design would generate the most speed?
Try building your own roller coaster. Remember to draw out your design. Gather your materials. Test your design. Improve your rollercoaster and then retest it.
For inspiration on constructing your rollercoaster, you can visit: