From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to solve quadratic equations by completing the square in intermediate algebra.
Crochet loopy granny squares will indeed remind you a little bit of your Gran Gran's favorite knitted coasters that she collected en masse throughout her lifetime. But the snuggly, historical and vintage quality of these granny squares is exactly what makes them so delightful.
Tired of hatching out the same boring triangles and squares? Want to bring your treasured shapes out of Flatland and into the third dimension? Then this tutorial is the answer to all your (drawing) problems.
Fold an origami flower with three petals from a square piece of paper.
Start with ten squares of paper in as many different colors as you would like, and then cut them into three equal rectangles. Then fold thirty small waves, and assemble into a twenty-sided polygon (icosahedron). Perfect for a geometric Christmas tree ornament.
Equations involving square roots are difficult to solve because of the complexity involved in performing operations on the square root terms. But you can follow a series of steps to solve these problems easily. To solve these kind of problems first isolate the square root term on one side of the equation and the non square root terms on the other side of the equation. Now in the next step square both sides of the equation. This gets rid of the square root on the left hand side and the equatio...
This video demonstrates how to square up a quilt block. Once you have your quilt blocks made up you have to square them so that they are all even sided and the same size. Take your most uneven sided square and lay it down. Place a square ruler over it. Line the ruler with the sides. Once you've measured the square determine how much should be cut from each side. Use a rotary cutter to cut each side down so it is even. Then lay the square ruler over the square again to measure your success. Re...
Jacky Liao and Tony Liao describe the main attributes of Sudoku and provide tips on how to solve the puzzle. Sudoku is a popular puzzle just like crossword. It is a puzzle of a 9X9 square sub-divided into 3X3 squares. You have to fill each column and row with digits 1 through 9 in any order. Each 3X3 sub-square must include all digits 1 through 9. Every Sudoku game starts with a few of the squares filled in. The more squares that are filled in the easier it is to play. As you fill in the squa...
Professor ElvisZap teaches you how to stretch shift and reflect the graph of a square root. A square root function is the opposite of a squared function. You start with y=square root of (x-1) it becomes 0<=x-1. then 1 <=x. You use the graph and solve it as you would for any function using small values first, then you have y=square root of x - 1, the domain 0<=x. This shifted the graph down 1 unit. 0=square root of x - 1, 1=square root of x, 1=x. Then the range is [-1 + infinity). Continue in ...
In this video the instructor shows how to solve quadratic equation by the square root method. The square root property of equations states that if k is positive and a*a = k, then a is equal to square root of k or -1 times the square root of k. So to solve a quadratic equation by square root property first get the equation in the form of a*a = k. Now apply the square root property explained in the previous step to get the result. The instructor now demonstrates these concepts by solving some e...
In this video the instructor shows how to sketch the graph of x squared and square root of x. The first equation is the x squared which is y = x * x. Now to sketch this take a sample values of x and substitute in the equation to get the value of y. Similarly find the set of points for the equation. Finally plot these points and sketch this graph which is in the form of a parabola. The curve is in the form of alphabet 'U' with its vertex at the bottom. Now similarly take the square root of x e...
robichaudd teaches you how to simplify square roots. When you're dealing with variables, even powers and you want to find out the square root of it, you follow the process. Divide the power by the root, which is two, because it's a square root, that gives you what comes out. If we have square root of x squared, the result would be x. So the square root of x to the 6 is x cubed. You simply divide the power by two, since we are dealing with square root. Then square root of 36 times x square is ...
This is the video about how to evaluate square roots. The square root of a number is a number that you can square to get it, that is, a number that you can multiply by itself to get the number. So, 2 is a square root of 4, because 2 x 2 = 4, and 3 is a square root of 9, because 3 x 2 = 9. (-2) x 2 is also 4 and (-3) x 2 is also 9. Numbers that have square roots always have two, a positive one and a negative one, but the square root symbol means only the positive one, so we can have one answer...
These crochet how-to videos demonstrate how to do flat braid joining to join granny squares. Start by crocheting a border on the first square. Then proceed to join the first and second granny squares with the flat braid joining technique. Watch and learn how simple it is to crochet with flat braiding. Follow along until you have joined all four granny squares.
This is one of the few times you should be a square. After all, achieving perfect, equally measured sides and angles involves fine tuned calculations that aren't open to creativity and whims.
Need a little help solving the last part of the Rubik's Cube puzzle? Permutating the last layer could be tricky, and could get you back to square one if you don't know what you are doing, but don't worry, you'll be able to solve that Cube in every possible PLL situation.
In this tutorial, we learn how to understand the properties of a square in Geometry. The four angles on the inside of a square have to be right angles. All but be 90 degrees and add up to 360. A square has four equal sides, which you can notate with lines on the sides. The diagonals of the square cross each other at right angles, so all four angles are also 360 degrees. Diagonals have to be equal in length to each other as well. Once you better understand this, you will be able to learn more ...
This is a very basic tutorial which shows you how to set up a square, convert it to a movie script, and then set up an animation and see your square spin. A simple clip, but you can apply it to many different objects, not just squares!
Supplies1.20-35 square papers (all the same size)2.stapler
This is a more advanced version of the granny square - the stained glass square, which usually is made with several separate colors of yarn. This tutorial is aimed at people who have already mastered crochet techniques to at least the intermediate level.
There definitely exists logic behind calling these fuzzy crochet squares granny squares. After all, the cozy texture and delicate, retro motif do remind us of Sundays visiting Grandma while she served us tea and sandwiches and she knitted the day away.
Radicals are square roots which are not integers; the square roots of 2 or 3 are examples of radicals. The presenters show simple ways of how to add and subtract such radicals. They explain that by using the method of factoring, the addition or subtraction is made very easy. If the square root of 8, for instance, is in some addition sum, it can be factored into the square root of 4 times the square root 2. Since we know that the square root of 4 is 2 this can be simplified to be 2 times the s...
In this video the instructor shows how to factor the difference of squares using a formula. The formula to find the difference of squares can only be applied if you have two perfect squares. The formula is (a * a - b * b) = (a - b) * (a + b). That is the difference of squares of two numbers is the product of sum of two numbers and difference of two numbers. So when you need to find the difference of squares of two numbers substitute the values in the above formula to directly solve for the fa...
This video explains to you how to find the area of a square. The area of a square is given by the formula
In this video the instructor shows how to calculate the area of a circle using squares. She starts with the formula of the circumference which she says is circumference C = Pi * D, where D is the diameter of the circle. Now she says that you can turn the shape of circle into a square and compute the area of the square there by calculating the area of the original circle. She shows how to do this by cutting up the square into sectors and arranging them in the form of a rough square and calcula...
This how-to video demonstrates everything you need to know for lanyard needs. Follow along and find out how to start and finish a lanyard using the square of box stitch (or the circle stitch) throughout. All you need is two lengths of plastic thread. Use your lanyard as a keychain, or to hang a whistle onto. Watch this video tutorial and learn how to make a lanyard using the square or box as well as the circle stitch.
This video tutorial will demonstrate the square stitch. Learn how to do this stitch using a large seed bead and learn how to make this stretch bracelet using the square stitch. Follow along and make this fun seed bead bracelet with the square stitch.
This slow motion video shows beginners the basics of making a granny square. Learn how to crochet a granny square by watching this video handicraft tutorial.
Square lashing is a great way to hold two things together at a perpendicular with rope or cord. Like most any knot, there is more than one way to tie it, and in this video you'll learn how to tie the Japanese MKII version of square lashing.
Calling all left-handers! In this video, you'll learn how to crochet a granny square with your left hands using the double crochet method. So for left-handers needing help with crochet, this video is for you. A granny square is a great way to practice and enhance your crocheting skills.
This math lesson from Yay Math covers four-sided shapes in geometry. Learn about the differences and similarities between rectangles, squares and rhombi (the plural of rhombus). The properties of rhombi and squares are covered, so sit back and enjoy this educational (and FUN) math lesson.
Unlike being a square, being a square knot means you're multifaceted, fun, and unique. Of course, we're talking about square knots in friendship bracelet/jewelry making, in which you utilize two different colors of string to create a tight zig zag knot pattern followed by loops.
While we think granny squares are pretty and whimsical pieces on their own, there really is power in numbers when you combine a bunch together into a massive quilt or afghan. But how exactly do you go from granny squares to a full-on quilt?
Square lashing is a knot-making technique that has been made famous by the Boy Scouts of America's massive pioneering projects, and is really integral to any structure made out of poles like the one you see in the thumbnail. This video will teach you how to use square lashing to bind two poles together perpendicular to one another. You will need to know how to tie a clove hitch to make this work.
There's a reason you feel so coddled, warm, and fuzzy when you visit your Gram Gram's house. Her crochet scarves, thickly woven Afgan blankets, and awesome crochet coasters create an air of love and care.
There's a reason you feel so coddled, warm, and fuzzy when you visit your Gram Gram's house. Her crochet scarves, thickly woven Afgan blankets, and awesome crochet coasters create an air of love and care.
Need to know how to factor perfect square trinomials? Learn how with this free video algebra lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just study for that next big test).
Need a little help figuring out how to factor the difference of two square? Learn how with this free tripartite video math lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just study for that next big test).
Shiho Masuda Teaches you to make 3-D origami star using recycled materials. The materials required are leftover wrapping paper, ribbons, two 3. 25" cardboard squares, ruler, scissors, glue, double sided tape and an X-acto knife. She cuts out 8 6"x6" squares from paper and glues them back to back to make four double sided squares. The four pieces are folded into 3"x 3" squares and stuck together with double sided tape. The 2 cardboard pieces are covered with paper and 12" ribbons are taped to ...
Improve your extreme card manipulation (XCM) with this video tutorial! Watch and learn how to do the Squeeze a Square Display card flourish. This is a perfect card flourish for your magic routine, or to just impress people. It's flashy and elegant. There' s no card trick involved here, just a great performance. Learn the Squeeze a Square Display!
