This is a super inexpensive activity. The foam tubes are about $1.80 for a 7 foot tube and you can slice it in half and make two ramps out of it. The marbles and masking tape are also inexpensive.
Awesome STEM Activity!Students were given foam insulator tubes that had been sliced in half lengthwise, masking tape and marbles and asked to create a roller coaster design using what they know about gravity and motion.
Students designed their own write up in their interactive science notebooks. Some use paint chips!