Many tests allow the use of a blank sheet of paper for working out equations. If you are allowed to use note paper during your test, write down your cheat notes on the piece of paper you plan to use as scrap with a white-colored pencil. White colored pencil will be nearly impossible to detect from a distance, but should be easily visible to your own eyes, provided you have enough light. White ink can also work for creating these "invisible" notes, but may be slightly more visible to others due to ink's reflective properties. White Out is fairly visible as far as this technique concerned, and can blot out the natural lines in the paper. Use at your own risk! If your tests are self-marked in class, invest in a pen with erasable ink. When it comes time to take the test, use that pen to mark all the answers. Then, when you self-check the answers, discretely erase any answers that are wrong and replace them with the correct answers. When taking the test, make sure to write lightly with the pen. If you press too hard, your old answers will be visible as indentations in the paper, giving away your actions! Some classes will require you to make edits to your test using a red pen to denote wrong answers. Replace the red ink in the pen with black ink and make the corrected changes in secret. Keep an actual red pen nearby in case your teacher is observing the changes you make. This trick works best when corrections are made through additions to the existing work (such as with missing grammatical marks from papers). Try suggesting to your teacher that self-correction leads to better learning! Using erasable ink can help make extra space on the paper if you need to insert a word or number in order to make the answer correct.

Summary: Write your cheat notes in white colored pencil. Use erasable ink. Insert a black ink stem into a red pen.

Do you wash your hair every single day? This can really dry it out, since you're washing away the oils your scalp produces to keep your hair shiny and healthy. Washing every day can also lead to oily hair, since stripping your hair of its oils causes your oil glands to go into overdrive. Try this routine instead: Wash your hair just two or three times a week. If you feel like your hair is getting dirty between washes, you can apply a dry shampoo on the days that you don't wash your hair. Just apply a small amount to your roots and then rub it throughout your hair to the ends. Rinse out your conditioner with cold water. Hot water is hard on your hair and can lead to split ends and frizz. Rinsing out your conditioner with cold water seals the cuticle, resulting in shiny, bouncy hair. Think of your hair like your best silk dress. After hand washing it, would you ball it up and wring it out? No, that would destroy its shape and fibers. Your hair is similarly fragile and needs to be treated with care to stay healthy. After washing your hair, gently pat it dry with a towel instead of wringing it out. Let it finish air drying. Use a comb instead of a brush. Forcing a brush through tangled hair can cause it to rip and break. Use a wide-toothed comb to gently work through the tangles from bottom to top to prevent breakage. Put away your hair dryer, straightener, curling iron, and hot rollers unless you have a special occasion at hand. Applying heat to your hair can damage it, so it's best to let your hair air dry instead. If you want to use the blow dryer sometimes, use it on a cool setting. When you do use heat styling devices, be sure to put a protective serum in your hair beforehand. Try an egg yolk and olive mask, a vinegar rinse, or put plain yogurt or sour cream on your locks. Search online for instructions. Egg oil contains Omega-3 fatty acids, antioxidants, and cholesterol, and is like a complete solution to hair problems like hair loss, grey hair, and frizzy hair.

Summary: Change your washing routine. Handle your hair gently. Use heat styling devices sparingly. Use homemade treatments. Use egg oil (Eyova):

You will need an old webcam, an electronics tool kit, a hot glue gun, and some type of inconspicuous housing. The housing should be something that you can safely take apart and won't look out of place with a wire attached to it. Some possibilities include a power supply, a coffee maker, or an old alarm clock. You will be hooking this up to a computer, so a private desktop or laptop is also necessary. You can even use a tablet if you have one that is compatible with USB. With cheap nanny cams regularly available, making your own hidden camera is not the most practical method. However, if you happen to have these materials on hand, it has the advantage of being free. Very carefully, use your electronics tool kit to remove your webcam's original housing. Remove all components besides the camera's lens, the circuit board, and its USB cable. Be very careful not to disconnect the lens or the USB cable from the circuit board. Keep all of these components attached. Unless you're using an object that is already hollow, you will need to make room for your camera to fit inside. Take the housing apart using any necessary tools and remove some or all of what's inside. If you're using something like an electric pencil sharpener, objects like this already have two perfect apertures built in. If not, your best option is likely to drill the holes yourself using an appropriate cutting bit. Make sure that the hole for the cable is at a seam where the housing opens. When drilling a new hole, you need to consider a spot where the camera will look inconspicuous. Pick a part of your object that is relatively dark so that the lens will better blend in. Using your hot glue gun, attach your camera and circuit board to the inside of the housing. Glue the circuit board to the bottom or side of the housing, placing the glue between it and the circuit board's solder side. Mount the camera so that the lens is up against one hole. Be very careful not to get any glue on the camera lens. Place the USB cable on its opening before closing the housing back up. Use more hot glue if you need to. Be very careful to make the item look exactly as it did before and obscure any signs that it has been tampered with. Consider covering the cable with a well-positioned book or piece of paper. Connect your new hidden camera to a computer using its USB cable and the computer's USB port. If the cable is too short, attach it to a USB extender. Install the webcam spy software of your choice and check to see if your camera is working. Test your camera by waving your hand in front of it. Can you see your hand on the computer screen? Did the software record that action? If so, try leaving the room for a while and then coming back in. Did your camera record your entrance? If so, then you have successfully made your own hidden camera.
Summary: Gather your materials. Take apart the webcam. Hollow out your housing. Make sure the housing has a hole for both the lens and the USB cable. Attach your webcam to the inside of its housing. Put the housing back together. Connect your camera to your computer.