The above was the last activity and had lasted them a long time when one of them found out the wonders of how fun a slope can be for their cars!
They had started out with just animals and stones play. Then our two took their toy vehicles out for a ride in the park. I also took the opportunity to teach them on the textures of different surfaces that they were playing on. From rough to smooth surfaces and how the different textures would affect the speed of the toy cars.