If you’re looking for building toys for your young engineer, stop the elevator! This is one of the best STEM toys for kids looking for continuous marble action. - Build a Marble Run track that twists, turns, and spins marbles at incredible speeds! You are exploring physics! Gravity pulls the marble down the first hill. At the top of the hill, the marble has potential energy (energy that's stored up and ready to be released). As the marble rolls down the hills the potential energy turns into kinetic energy (energy of motion). - Marble runs for kids develop the ability to focus！We can help improve that focus by encouraging manageable playtime goals. Giving them pictures of run designs that they could make would give them something to shoot for. Many children are visual learners, so this is the perfect way to help them exercise hand-eye coordination and spatial skills while putting their imagination to the test! Annular Layered Hollow Funnel Design The ball passes through the established cylindrical tube and falls into this layered hollow annular funnel. The ring-shaped layer design not only prevents the ball from coming out, but also lengthens the trajectory of the ball. In multiplayer competition, you don't have to worry about too many balls blocking the trajectory, and the ball trajectory becomes more intuitive. The chase game officially begins and the whole process will keep your kids watching carefully. Roller Coaster Track Let the ball experience the ruggedness and ups and downs of the mountain road, and show a smooth posture with the track. Children's hearts also rise and fall with the movement of the ball, increasing children's interest . 360 Degree Rotation The elongated track increases the running time in a straight line, and the 360 degree rotation is configured so that the ball can constantly change the direction of movement, which makes the ball toys more fun. Extended funnel design The balls pass through the sturdy pipe and fall into this enlarged funnel. A yellow hollow cover is designed on the top to prevent balls from jumping off the track. The enlarged funnel gives the balls more room for movement and allows the balls to move to rotate 4-5 circles then enter the next orbit, the whole process will attract your child to watch carefully. The Up and Down Slides High and low slides for a high-speed experience. The small levels designed by the discs on both sides can rotate the balls fully, which improves the playing experience. When competing with multiple balls, see who comes out first. Conception d'extension Serpentine The winding curve allows the ball to enter the next track after experiencing the ruggedness and curves of the mountain road, fully restoring the car's forward movement, left and right turns and overtaking turns on the competition track. Unique U-shaped rail The U-shaped grooved rail connects the top and bottom rails, allowing the balls to show the charm of gravity on the established smooth track. Start your ball game now. High and Low Spiral Track The up and down spiral trajectory makes the ball show a wonderful trajectory through the established trajectory in the seemingly tortuous circular path, at the same time, the circular line greatly lengthens the trajectory of the ball. The wonderful time is always reluctant to end early.