How Far Is It To Mars? is a neat infographic that provides a pixel scale to show you how far it is from Earth to the Moon and the distance from Earth to Mars. The infographic is a motion infographic so you have to click on it to make it move. The distances are represented by pixels. After you get to the moon on the infographic click it again then sit back and watch as it takes a while to scroll to Mars.
Applications for Education
How Far Is It To Mars? could be a nice resource for showing students the scale of the universe. You might consider pairing it with one of these five resources for showing students the scale of universe.
H/T to Cool Infographics.