Cars from lego pieces

For the Steam activity with the theme "Simple machines" I made a "car" from lego pieces.

The children received lego pieces from which we asked them to build a car that could move.

The children made the car and to see if it moves, we made an inclined plane with the help of a plank where we tested this.

Due to the inclined plane, the children noticed that the car not only moved by itself but also had some speed.