The Constructive Playthings Race and Roll Ramps Set is the perfect opportunity to integrate stem into the classroom. Our two 12" x 6" hardwood ramps have removable, textured coverings that are 18" long and easily attach with hook and loop fasteners for your convenience. Students can test their theories on speed, height and weight while fostering collaboration and problem-solving strategies. The included accessory set includes 2 wooden cars, 2 metal cans, 2 plastic cane rings, and 2 weighted rubber baseballs, everything you need for a quick experiment! These ramp sets are great for the classroom or for at-home use. Recommended for ages 3 and up.