The National Science Foundation offers a pictoral overview of the hierarchy of scale of our universe from vast clusters of galaxies spanning millions of light years to tight little clusters of quarks inside the atomic nucleus.

Is this a learning tool or what? Aspiring astrophysicists in the fifth grade as well as advanced high school physics majors will appreciate the symmatry.

Consider using this as a homework assignment whether through one-to-one learning with a Tablet PC or teacher spoken group instruction.

Tablet PC Education Blog