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Pluto was considered a planet for more than 75 years, but in 2006 it was demoted to dwarf planet. Many people were left wondering why the change was made and what the difference was between a planet and a dwarf planet. Come find out in this educational video!
In chemistry, there are two main types of changes – physical changes and chemical changes. Physical changes affect the shape, size, and form of a substance. Chemical changes changes occur when the particles of two or more substances are rearranged to form a new substance. Come learn how to tell the difference between the two … Read more
This crossword puzzle contains clues for ten major Northern Hemisphere constellations, and includes an answer key. Click on the preview to download the full two-page PDF! This worksheet may be used for non-commercial home and educational use. Please do NOT reproduce it elsewhere around the web! You May Be Interested In:
Taurus is a constellation of the zodiac visible in the northern hemisphere during winter and early spring. Despite the fact that Leo is best viewed in the winter, it is the zodiac sign for people born in late April and early May in astrology. Come learn about the stars in the constellation Taurus as … Read more
Rhinos are some of the biggest land animals on the planet. Although they have no natural predators they include some of the most endangered species in the world. All species of rhinos have one or two horns on their nose, and it is this horn that leads poachers to kill them. People are working … Read more
The Roman Colosseum, originally called the Flavian Amphitheater, is nearly two thousand years old! It was built to house gladiators in combat, animal hunts, executions, and even mock sea battles, complete with full-sized ships. It was a marvel of engineering and design, and remained in use as an arena for about 500 years.
Frederick Douglass was a famous speaker, writer, civil rights activist, and abolitionist. Born into slavery, he escaped to freedom and dedicated the rest of his life to securing freedom for others and equal rights for everyone. He wrote three biographies which still provide an excellent look at the conditions slaves were kept in. This … Read more
Did you ever wonder why the sky is blue? It’s because of the way that sunlight interacts with our atmosphere!
The Arctic is an amazing place! You probably know that it is a very cold, icy place, home to polar bears, whales, and walrus, but there is more to the Arctic than that! The Northern Lights dance in the sky during long winters when the sun does not rise. In the summer, plants grow … Read more
Have you ever wondered where the story of Santa Claus began, and how he became what he is today? Come learn about the original Saint Nicholas, and his evolution into Santa Claus!