Unschool: Mystery Wednesday - love this idea. One day a week choose a new location to visit. Kids are told what to wear and what to bring, and then given clues along the way as to where you're going. So much fun!
An upcoming documentary entitled The Raising of America will explore the early childhood education and care system in the U.S., including a comparison to other countries. A preview video is available on their website.
Earth Evolution Poster/Graphic - Changing Planet - The Intersection of Geology and Biology - illustrates how the Earth has evolved over the past 4.6 billion years, and highlights how that evolution influences biological evolution.