PaperEditing

This sumo wrestling game is a fun game that recreates a match of sumo, the traditional Japanese wrestling sport, with paper. When you tap the lever, the "dohyo" (the ring that the players wrestle in) shakes, making the wrestlers move. The wrestlers have very unique expressions, and you can choose from big and small types, as well as some original animal wrestler characters! Gather your friends and family, choose which wrestler you think is the strongest, and it's "Ready...fight!" How to Play: Line up the wrestlers at the lines (called "tachiai") at the center of the dohyo. Tap the levers to make the wrestlers fight. The wrestler that falls outside the dohyo ring, or touches the dohyo with a part of its body besides the feet, loses the match.

"Moving Copernican System" In the early 16th century, Copernicus, who was born in Poland, proposed a heliocentric theory in which the Earth revolved around the sun. Now we know that this theory was correct. In the early 17th century, Kepler showed, based on the observations, that the orbits of planets did not form perfect circles, but rather traveled elliptical orbits, with the sun at a focus point. Galileo also advocated the heliocentric theory based on his astronomical observations. Finally, Newton discovered the Law of Universal Gravitation toward the end of 17th century, proving the correctness of the Copernican System. "Moving Ptolemaic System" More than 1,800 years ago, the Greek astronomer Ptolemy from Alexandria proposed a cosmic structure called the Ptolemaic System in which Earth was stationary at the center of the cosmos, while the moon, the sun, planets, and stars revolved around it. This theory held sway for over 1,300 years but was eventually discredited due to various observations.

Tyrannosaurus Rex, whose name means "tyrant lizard king", is classified as a bipedal carnivore (Therapoda) of the lizard-hipped dinosaur order (Saurischia). It had a large, sturdy head and long hind legs and a tail. In comparison, its arms were very short with two-fingered hands. What their actual purpose was is unclear. It is believed that T-Rex was able to balance skillfully and moved around on its two hind legs. Dinosaurs lived about 225 million years ago, in the Mesozoic era, which is made up of the Triassic, Jurassic and Cretaceous periods. It is thought likely that the dinosaurs were wiped out around 65 million years ago, when many plants and animals died as a result of climatic changes brought about by a meteor striking the earth, but no one knows what really happened.