Difficult Exercises Search Results

How To: Build a Small DIY Hydrogen Fuel Cell Science Experiment

The hydrogen fuel cell has great potential to replace carbon-based fuels in our vehicle fleets and stave off global warming. It's a difficult concept intellectually, so why not make this fun little science experiment to try it out for yourself? Yes, by following these simple instructions you can make a small hydrogen fuel cell at home that will even power some devices!

How To: Use personal pronouns in an IELTS essay

In this video, we learn how to use personal pronouns in an IELTS essay. Pronouns are: we, I, me, you, and us. These are words we use to describe ourselves and should generally be avoided in an essay. There are times when it's difficult to avoid personal pronouns in essay, but only use these when you're being asked to or are supporting an argument. An example of how to avoid using personal pronouns is: "I believe that" could be changed to "it is believed that". Once you learn how to replace pe...

How To: Find the standard deviation with the Z-Score formula

In this tutorial, we learn how to find the standard deviation with the Z-Score formula. First, take your problem and write it out one by one underneath each other. Then, you will need to substitute the numbers in for the variables that are in the problem. Once you do this, you will follow the basic rules of math to find out what the answer to the problem is appropriately. Once you have done this, finish off the problem to find the answer, then you will have found the standard deviation using ...

How To: Understand shooting surfaces in basketball

In this tutorial, we learn how to understand shooting surfaces in basketball. Make sure you have the ball located on the finger pads or shooting surfaces. On the finger pads, keep the ball engaged with them and not the palm of the hand. This is also the shooting surface, where you have better control of the basketball. You can elevate the basketball from your thumb by spreading out your fingers so there is a finger's length between the palm of the hand and the ball. Test this out with one of ...

How To: Find the percent of a number

In this tutorial, we learn how to find the percent of a number. First, take the percent and convert it into a decimal. Then, multiply this by your other number. After this, you will come up with the answer to the problem. An example of this would be if you had the question: what number is 25% of 40. First, you would find the decimal of 25, which is .25. After this, you would multiply that by 40 and then come up with the correct answer, which is 10. Repeat this process for the different equati...

How To: Change a tire on a folding bike

In this tutorial, we learn how to change a tire on a folding bike. First, you need to know how the bike goes together so you can take the tire off correctly. Once you have taken the tire off of the rim of the bike, you can discard with it. You can use either strong fingers or a wheel lever to help you take the wheel off if it's difficult. Next, you will need to slightly inflate the tire and add on the rim to the tire. Once it's on, you will need to inflate it and then place on the bike! Now y...

How To: Change fractions to decimals

In this tutorial, we learn how to change fractions to decimals. First, you will need to divide the numerator by the denominator. The numerator is the top number and the denominator is the bottom number. Once you get this number, you will end up with a decimal instead of a fractions. When finished, you will end with the number that will be your answer! Practice doing this with simple numbers, then move onto more difficult to test your mind and get better and better at math! This is an easy con...

How To: Thread a Singer Finishing Touch serger sewing machine with differential feed

Sewing with a serger sewing machine can be quite difficult, if you're lucky enough to own one. Even threading the beastly sewing machine can be pretty tricky. But this two-part video tutorial should help you to properly thread one. This covers the threading of a Singer Differential-Feed Finishing Touch serger sewing machine (14SH654), which has 4/3 thread capability. Singer also has a PDF available with detailed threading instructions.

How To: Use Japanese expressions for "lazy"

In this video, we learn how to use Japanese expressions for "lazy". This is difficult to translate for most people, because of how it's expressed and said. Mendo-Kusai is expressing something you don't feel like doing. This is something that takes too much effort, and you can take this to someone casually or with your friends. An example is if you don't feel like doing your homework, or you don't want to walk all the way around a grocery store. This basically means you are being lazy and don'...

How To: Use basic words in Hindi

In this video, we learn how to use basic words in Hindi. The easiest way to learn the basic words is to hear them and see them at the same time. When you are saying "I" you will say "main" in Hindi. When you want to say "I have" you will say "mere paas hai". Try saying each of the parts individually so you can get a better feel for them, then combining them together quickly to make just one word. Once you are ready to combine these into a sentence, feel free to use the basic words together in...

How To: Make side pocket cut shots when playing pool

In this video, we learn how to play pool by making a side pocket cut shot. Thin cuts into the side pocket require the cue ball to travel 8 or more feet. The best way to do this is to pocket the 7 into the side pocket, then run the cue ball down to the short rail. After this, do a straight angle on the 8 and hit it into the right hand corner. This shot may look very easy, but controlling the cut ball is very difficult. Practice this skill to develop it and you will be able to do this shot with...

How To: Play guitar using proper technique on the fretboard

In this video, we learn how to play guitar using the proper technique on the fretboard. While playing on the fretboard, the speed and movement should be equal. Your fingers should be close to the fretboard at all times, not far away from it. When you play riffs, pick the notes that will make the music sound seamless and beautiful. All the sounds should flow together perfectly. Once you learn these basic tools, you should pick some easy sounds and practice them so you get the idea of how your ...

How To: Make nutritious and easy one-dish meals

We all know how it goes: You've just come home from a grueling day at work followed by a grueling drive back, and you're beat. Even the thought of forcing your feet to the kitchen and turning on the stove makes you shudder. So you pick up the phone and order a pizza and buffalo wings. Sure, it's tasty, but is that really the best thing you could be eating?

How To: Order a cup of coffee or some tea at a café using Mandarin Chinese

When traveling abroad, the one thing you're going to need is how to quench your thirst. Ordering a simple cup of coffee or a hot cup of tea could be impossible if you don't know the local language. This video will show you how to order a drink in Mandarin Chinese. You'll also learn how to point to any snack item that you might want, even if you don't know what it's called in Mandarin! You'll see that communicating with a waiter or waitress need not be too difficult in China.

How To: Make a scalloped crochet hoop earring

Think all crochet projects produce yuppy granny squares and are only done by elderly cat ladies who live alone? Think again. With stars like Amanda Seyfried proclaiming that knitting is their favorite hobby, crocheting/knitting is once again becoming hot stuff, kind of like designer cupcakes or pilates.

How To: Install kitchen cabinets

If your kitchen needs to a face lift, the most common, and expensive, area to work on are the cabinets. Cabinets can give a certain feel to the room depending on what the style may be. Taking out cabinets from an existing kitchen may be easy, but installing them can be a bit more difficult.

How To: Tame frizz in a long curly layers haircut with HerCut

Long, curly layers look fabulous (we're thinking Beyoncé and Shakira here), but the hairstyle also presents two of the most difficult to manage hairstyling problems: Too much frizz and messy, uneven layers that don't lie flat. It may seem like a hairstylist's - and everyday gal's - nightmare, but long, curly layers can be styled with the right tools and technique.

How To: Add bounce and shine to your curly bob with HerCut

HerCut is an innovative new line of haircare products at Sephora that's built on the premise that every haircut is unique and requires its own styling products to create the best texture and shine. As "no duh" as this seems, there actually aren't many lines out there that are built for individual hair styles.

How To: Replace your home's gutters

If you own a home with beat down and rusty gutters, it may be time to replace them with new ones. Gutters are important during the winter time by helping collect any water that can seep or leak into your home, causing water damage. They're not too difficult to replace and can help out the overall look of a home significantly.

How To: Make a simple wood cutting board

If you are just starting out in woodworking, there are many basic projects that you can tackle. The birdhouse, storage shelf, and the cutting board. Making a cutting board isn't too difficult and once finished, can be used to give you a space that you can chop fruits, veggies, and meat on.

How To: Do changing spot combo pirouettes

In this tutorial, we learn how to do changing spot combo pirouettes. First, prepare for the turn facing the front left corner. Do a triple pirouette, then forte the leg around and change your spot to the right front corner. After this, land behind. Do this in counts of eight, then plea and land. This may be difficult to understand at first, if you have no experience doing dance moves. Just keep practicing, and pretty soon you will have these moves down! Changing spots is an easy move to get d...

How To: Fix a flat bicycle tire

There's nothing like taking a nice, relaxing bike ride during anytime of the year. Not only do you feel more in touch with your surroundings, but you're able to burn some calories as well. But all the joy and happiness that it brings can quickly be sucked away by a flat tire.

How To: See if an email is a scam

In order to find out if an email is a scam, you should avoid clicking on any links in that are in any emails. The links that are attached to emails, in this manner, usually have cloned the website of the institution where you do your banking. The link will look similar to your banking institutions site. Do not enter any of your personal information in emails in this fashion. Your bank will not contact you in this way.