Hands-on in Science Lab

Students in 6-8 science are preparing for science fair early by mastering the scientific method. They worked hard and steady placing one drop at a time on the face of a penny. As they steadily worked, they noticed that their hypothesis was unsupported rather quickly. We learned that it is o.k. to have an unsupported hypothesis! How many drops of water do you think will fit on the face of a penny?