traffic light = semaforo :) make your own traffic light! to go with your cardboard car and cardboard gas station with a pump that actually fits to the car! I love how this women comes up with these ideas!
Use cardboard, craft sticks, and hot glue to create an epic marble run! The marbles land in paper cups at the bottom of the track. This is a fantastic engineering challenge for kids. How should we position the sticks? Which path will the marbles take? How