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Those eggs have been sitting on the counter for an awfully long time. How do you know if they're still safe to eat? How I Pinch a Penny teaches you how to perform a floating test that will tell you which eggs are fresh and which eggs have gone off (and when in doubt, throw them out). Also check out the way the an egg's whites and yolk change as it ages, so you can tell a good egg from a bad inside and out.


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You want to play golf, but your friend wants go surfing; you’d both rather be together than not. It is in your best interest to make the same decision, but you have a few options, and you have to decide without knowing your friend’s decision. Learn how to run a mixed strategy algorithm to determine if there is a mixed strategy equilibria. Once you can calculate the payoffs for a mixed strategy, you can make an educated decision and choose the option with the highest probability of success.


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Want to make a fun and colorful alcoholic drink? In this lesson, The Vegetarian Baker teaches you how to infuse Absolut Vodka with jelly beans, making the vodka colorful and sweet. Using mini vodka bottles and jelly beans, you can create a cheerful mini-fridge-sized drink with a kick. It's the perfect way to get a little of your inner child into your adult beverage!


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While diets may work to keep you healthy in the short term, the stress that they put on your mind and body sets you up for a big crash later. As Darya Rose, author and creator of Summer Tomato, explains, the secret is in taking small steps to build healthy habits instead of using up all of your hard-earned willpower. Start getting healthy for the long term today!


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What happens if two suspects are taken in for questioning on suspicion of robbery? If everyone is looking out for their own interests, the results might surprise you! Follow along with William Spaniel as he explains this classic game theory scenario. Learn how to decide which outcomes are most likely and what it means for a person to have a ‘strategically dominant strategy’.

Continue with the rest of this series to understand how people behave in increasingly complicated scenarios.


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Does DNA sometimes seem imaginary, like the Tooth Fairy? Everyone learns about it in high school biology, but have you ever actually seen DNA? Well, with Myles Power’s help you can. In this lesson, learn how to extract DNA from a strawberry. Using only common household items like dish soap, table salt, and paper towels, you too can draw out the genetic material that makes a strawberry a strawberry. This experiment is easy, but amazing, and proves that science is totally fun.


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Before you get out there and start popping wheelies, learn the basic things that any cyclist should know when attempting tricks on his or her bike. This lesson by Think Bikes provides a checklist for you and your bike (got your helmet? gloves? do your tires have the right pressure?) and shows you how to do one of the most important tricks in the book: the track stand.


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How can you win when playing Rock, Paper, Scissors? Not with a pure strategy, that’s for sure! This lesson from William Spaniel's Game Theory 101 series teaches you the theory behind this classic game. Do the math and check the payoffs to discover why you just can't beat randomness. Bummer, right? Learn about cycling arguments and why equal payoffs mean you can't easily pin down even a mixed strategy Nash equilibrium.


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Whether you are catering a swanky soiree or hosting your own celebration, learn how to create a festive blueberry dessert that looks much more difficult to make than it is! Your partygoers will be delighted with this chic Blueberry Dessert in a Martini Glass. In this lesson from The Aubergine Chef, you’ll learn how to make and combine the four components of this beautiful dessert recipe (cake, mousse, gelee, and Chantilly cream), and garnish each glass masterfully.


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Want to get rid of dead skin and reveal smoother, softer, younger looking skin, but don't want to spend a fortune on beauty products? Taste4Beauty shows you how to make a DIY homemade sugar scrub that's cheap, quick, and easy to make- it only has two ingredients! This scrub will exfoliate and moisturize your skin, and improve blood circulation. You'll be revealing a glamorous new you in no time!


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New to the iPhone 5s? Excited to explore its features? In this lesson by The Unlockr, learn how to set up and use Touch ID by scanning your fingerprints accurately. Scan one or two fingers, or take the time to record all of them! With Touch ID correctly set up, your phone will be secure from prying eyes (and fingers).


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This Advent Calendar is a gift that kids can make for their parents! This lesson shows you step by step how to make an advent calendar. Think of things you can do to help your parents in December, write or draw every promise on a little piece of paper and put them in the Christmas ornaments. For teachers, the lesson attachment has a link to a free companion document containing writing suggestions and sample drawings. Music courtesy of Davenport Productions, used under license.


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If you run your own business, you know how hard it is to keep track of payroll, inventory, customers, and vendors. Guess what? There is an easy way to manage these and other accounting tasks without breaking a sweat! In this first lesson of a beginner QuickBooks course, get an overview of this powerful accounting software and learn just how easy it is to master! Learn to set up a company file, enter critical information, and get ready to use QuickBooks!


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Eating healthy starts with the food in your kitchen. If you don’t stock your fridge and pantry with wholesome and nutritious meal options, you will be more likely to take the easy route and order something fast and greasy elsewhere. In this lesson, Darya Rose, author of Foodist and creator of Summer Tomato, offers several tips and tricks for easing your way into cooking healthy meals at home.


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Before you set out on your next adventure in the great outdoors, make sure you have the right food—and enough of it! Elaine Johnson, associate food editor at Sunset magazine, reveals what to prep ahead, why you should use a grocery list, how to pack a cooler to keep fragile foods safe and secure, and more. With all of the meals squared away in advance, you can spend less time hovering over the grill and more time enjoying the fresh air.


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From gathering tools and materials to devising a final script, planning a high-quality lesson is a challenge. If you’re having trouble, take some tips from crafting experts and producers of over a dozen Curious lessons, the O’Neil Sisters. Whether you are thinking about creating your own how-to videos or you’d like to improve the quality of an upcoming series, use these tips and tricks to create clear, structured, and attractive lessons.


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Have you mastered the double crochet and slip stitch? Are your friends and family always complimenting your handmade crochet scarves and accessories? If you want to start selling your crochet for profit, this is the course for you! You’ll learn how to create a business plan to make your dream into a reality. Begin by thinking about your audience, inventory, pricing, and advertising strategy.


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Want to wow the world with the quality HD video you could be shooting with that iPhone in your pocket? This lesson will teach you the basics of shooting video on your iPhone 4, 4s, or 5. Once you are familiar with the camera app, learn how to hold and focus the camera, and how to view an accurate display of your video. Ready to shoot? Finish this lesson by learning ways to stabilize your camera to make your online video or tutorial appear smooth and fluid.


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Not all bicycle seats are created equally! Neither will all bicycle seats fit you comfortably, or affect your performance the same way. Once you know what saddle width you need, determine what style fits you best; consider your physique and your riding position. This lesson from Art’s Cyclery highlights three different saddles: the Arione for the average rider, the WTB Devo for riders with a climber’s build (toned thighs and a thin physique), and the San Marco Concor for more muscular riders.


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