INPUT ARTICLE: Article: Mix 1 tsp (5 mL) of dish soap with a cup of warm water, then let soak your diamond earrings for 3-4 minutes. Remove them with a spoon, then rub them gently with a soft toothbrush. Place them in the mixture for another 1-2 minutes, then transfer them to a bowl of cold water to rinse them off. Let them dry on a clean towel. To clean silver earrings, first line a glass baking pan with tin foil, shiny side facing up. Place the earrings on the tin foil and fill the pan with warm water until the earring sare immersed. Sprinkle in baking soda until you can see the earrings start to bubble, then let them soak for an hour. Rinse them in a bowl of clean water and dry them with a soft cloth. It's important to clean silver earrings properly, since they can lose their shine and look dull and old when they get dirty. You can clean a few pairs of silver earrings at a time with this method. Mix lukewarm water with a few drops of mild dish soap. Dip in a soft cleaning cloth and use it to gently wipe your pearl earrings. Let them air dry on a towel before putting them away. Avoid using harsh chemicals to clean pearl earrings, since they're typically more sensitive to damage. Wipe your pearls with a soft cloth after every wear to keep them looking clean. Dirt can accumulate in the corners of cut stone earrings, making it difficult to wipe off. Use a shaved matchstick or a toothpick to pick it out instead, removing the dirt slowly and carefully. You can also try wrapping the toothpick in a tissue or cloth to create a softer tip, but it may not be as effective in getting into tighter spaces.

SUMMARY: Clean diamonds with dish soap and warm water to avoid discoloration. Wash silver earrings with warm water and baking soda. Use mild soap and water to clean pearl earrings. Remove dirt from cut gem earrings with a toothpick.

INPUT ARTICLE: Article: Whether you research alone or with friends, learn about the origins of Groundhog Day. In medieval German culture, people believed that hedgehogs could predict winter if it saw its shadow. When some Germans immigrated to Pennsylvania, they brought this tradition with them but switched to groundhogs. The first recognized Groundhog Day celebration was February 2, 1887, when the town of Punxsutawney dubbed their groundhog Phil America's weather-forecasting animal. Groundhog Day history can be intriguing, once you study it. For example: did you know that during the Prohibition, Punxsutawney Phil supposedly threatened to impose 60 weeks of winter if he didn't get a drink? At daybreak in Punxsutawney, reporters gather around the groundhog's den to watch him emerge from his burrow. Get up early in the morning to watch this momentous event on TV. Be prepared for a long winter if he sees his shadow! Call or email your local station if you're not sure what channel is broadcasting the event. If you live in the eastern US coast, you can travel to Punxsutawney to watch Phil in-person at his burrow in Gobber's Knob. If groundhogs are native to your environment, go on a hike or trail walk and look for groundhogs (also known as woodchucks). Go with a group and make a game out of who can spot the most groundhogs. If you can't see any, enjoy the fresh air and see if there really will be six more weeks of winter. Visit your local zoo if groundhogs aren't native to your area. Call ahead to ask if your zoo has a groundhog exhibit. To celebrate the importance of Punxsutawney Phil's shadow, make your shadow puppets out of paper. Outline your shadow puppet on a piece of paper, then cut it out and attach it to a popsicle stick. After you've created your puppets, put on a puppet show. You could even make a puppet show about the true meaning of Groundhog Day.

SUMMARY: Read up on Groundhog Day history. Watch Punxsutawney Phil emerge from his burrow on TV. Go on a nature walk. Play with shadow puppets.

INPUT ARTICLE: Article: Make sure the needle stays on the endpoint, and that you do not adjust the compass setting. The length of the arcs does not matter. Make sure you do not change the compass setting. Make sure the needle stays on the endpoint, and that you do not adjust the compass setting. The two sets of arcs you've drawn should intersect. To do this, place your straightedge on the point where the arcs above the line intersect, and align it with the point where the arcs below the line intersect. The line you draw between the two arc intersections bisects the line at a ninety degree angle. You have used the compass to outline two congruent circles centered over either endpoint. The intersecting arcs represent the endpoint of a radii from the center of either circle. The length of the radii will be the same, since the circles are the same size.

SUMMARY: Draw an arc above and below the line segment. Reposition the compass on the other endpoint. Draw another set of arcs, above and below the line segment. Connect the arc intersections. Draw your perpendicular bisector. Understand why this works.

INPUT ARTICLE: Article: The Terminal has an icon that resembles a black screen with a text cursor. Use the following steps to open the Terminal on Mac: Click the Magnifying Glass icon in the upper-right corner. Type Terminal in the search bar. Click the Terminal icon. This navigates to the root directory on your computer. This navigates to the folder(s) the file is located in. Be sure to separate each folder with a "/". Make sure you use the correct capitalization. For example, "cd ~/documents" You can also type "ls" and press Enter to see a list of folders and files in the current directory. For example, "rm textfile.txt". This deletes the file. If the file name has spaces in it, place the file name in quotations (i.e rm "text file.txt") If the file is write-protected, you will need to confirm that you want to delete the file. To confirm, type "y" and press Enter. Alternatively, you can type "rm -f" followed by the file name to force delete the file name.

SUMMARY:
Open the Terminal. Type cd and press Enter. Type cd ~/ followed by the file location and press Enter. Type rm followed by a space and the file name and press Enter. Type y and press Enter.