How to Do the multiplying chalk trick

This video is a tutorial on how to perform the multiplying chalk trick. The magician uses two pieces of chalk to perform this trick, although he also suggests using anything chalk-shaped. First, the magician performs the illusion of hiding one piece of chalk in his right hand. The other chalk is visible to the audience in his left hand. He switches the chalk and pretends to put it in his pocket, but in reality he is hiding the piece of chalk. He continues to repeat this action over and over. He asks the audience how many pieces of chalk are in his pocket. He shows seven, but he says you only need two to perform the trick.