Active Math Posts
How To: Multiply rational expressions in two "easy" steps
In this Math Made Easy tutorial the instructor shows how to multiply rational equations. He states that multiplying rational equations is simply a process of simplifying equations, in which he says that first the polynomial equations should be factorized. He further shows how to factorize the equations by solving an example. After factorizing them he reduces the common terms on the numerator and the denominator and finally arrives at the new simplified equation. This video clearly shows the m...
How To: Find the surface area of a rectangular prism
Have a 3 dimensional figure that you can not figure out the surface area? This video teaches the fundamental concepts and techniques of figuring out the surface area of a 3 dimension figure. In this video, the specific shape will be a rectangular prism. The video will assist its viewers in understanding and learning the process of how to find the surface area of this 3 dimensional figure. The method is simple and easy to learn. This is highly recommended to anyone with an interest in math.
How To: Understand the Rule of Corresponding Angles
This video explains about the rule of corresponding angles. When measuring the angle between the parallel lines (i.e.) Line1 and Line2 across the straight line. The angle A and angle B are equal. The angle C and angle D are equal. The angle E and angle F are equal. Finally angle G is equal to angle F. So, the angle between the parallel lines in all the angles are equal. Hence, this is the rule of corresponding angles. This video is very useful to basic high school geometry courses. Correspond...
How To: Subtract fractions with uncommon demoninators
In this tutorial the author shows an easy and simple way of subtracting fractions with uncommon denominators. He says that to subtract fraction with uncommon denominator, we need to make their denominators equivalent first and after making the denominators equal, you need to increase the numerators proportionally to maintain the original ratio of the fraction. Now as the denominators are same, we can directly subtract the numerators arriving at a new fraction. He further shows how to deduce t...
How To: Solve long division.
This video is about solving long division. Divide from the left most number. 95 can not go into 13 so 0 goes on top of 13. 95 goes into 132, 1 time. A "1" goes on top of the 132 and divide. Apply remainder with next number. Bring down next number to get 370. Apply remainder with next number. Repeat division to last number. Remember to include any remainder if the number does not divide evenly. Repeat steps 1 and 2. Since there are no more numbers to bring down, the remainder is "1". This vide...
How To: Read a tree diagram when studying probability
In this video the tutor shows how to read a tree diagram. He shows an example of a tree diagram and says that tree diagram represents the choices made by a student in a cafeteria by ordering different kinds of foods and the chain in which the they are ordered. Now every combination that a student can choose at their lunch is mapped out in the form of a tree diagram. Now any choice a real student takes at the cafeteria can be mapped out to the tree diagram through the different branches. Now t...
How To: Convert mixed numbers into improper fractions
For example consider 1 and 2/3. In this mixed fraction 1 is the whole number and 2/3 is the fraction. You simply have to multiply the denominator with the whole number and add the numerator to the resulting answer. Consider the fraction 1 and 2/3.All you have to do is multiply the whole number 1 with the denominator 3 which is step one and gives you 3 as a result and then add 2 the numerator to the result of step one that is add 2 with 3 and it will give you 5. Then just take the end answer a...
How To: Subtract positive and negative integers
How to subtract positive and negative integers: There are four types of subtraction:
How To: Use the A-A Property to determine 2 similar triangles
Dougsimmsonline shows how to determine whether or not 2 triangles are similar. Not only does he go on to show that they are but he describes step by step how to do the math to find missing angles. He does this process twice to show one set of triangles being similar and show the other set of triangles as not being similar. Doug is using a large computer touch screen as his drawing board to show you how this process is done.
How To: Draw a right trapezoid in Geometry
Watch this video to learn how to draw a right trapezoid using given specifications for lengths of sides. A right trapezoid is a four-sided shape with two right angles and two parallel sides. First, draw the long base. Then draw a 90 degree angle at one end of the base, using a protractor. Mark the angle to show it is 90 degrees. Then draw another 90 degree angle at the top. This is the first video in a set--to finish learning you must watch the next segment. If you watch these videos you will...
How To: Divide mixed numbers
In this easy to understand video, intuitive instructions are given on how to divide mixed numbers. This video will help you quickly learn a fast and easy method for simplifying and then dividing mixed numbers. If you have ever gotten confused when trying to learn about mixed number division, this video will walk you, step by step, through the best process. The video contains a voice over and visual demonstration of how to do an example mixed number division problem.
How To: Calculate the area of any triangle
This video will show you simply how to calculate the area of any triangle using basic geometry formulas. Since a triangle is basically half of a rectangle, the formula for calculating the area of a triangle is base times height. This video offers some insight and examples provided to you by a teacher about how to apply this formula to various types of triangles, whether they are right triangles, equilateral, isosceles, or another form of triangle. By watching this video, you will be well prep...
How To: Find equivalent fractions
In this video the tutor explains about the concept of Equivalent Fractions and how to find them. She states that equivalent fractions are fractions with same value. She explains this with an example saying that a fraction can have many forms in their unreduced states and all these fractions will have the same value which can be obtained by reducing them. She shows that we can make an equivalent fraction of any fraction by multiplying the numerator and the denominator by the same number and go...
How To: Solve mixed equation with decimal, percent & fraction
This video shows the process to solve a mixed equation with decimal, percent and fraction. The presenter explains the process in a way, which is easy to understand. The video is candid and well presented. The video shows three ways to solve the problem. This can be done by converting the equation into fractions or decimals or percents. The video explains all the three ways in detail. The video is very simple and easy to comprehend. This video is a must for people wanting to learn mathematics.
How To: Find the volume of a solid object
This video shows the process of finding the volume of solid. The video is simple and easy to comprehend. The video takes the example of a rectangular solid and a solid cylinder to explain the method to find the volume. The video shows the step by step method to find the volume. The first step involves finding the area of base. After this, the area is multiplied by the height to find the volume. The unit of measurement is also taken into account in the video.
How To: Graph an inequality on a number line
Need a little help in understanding the number line and graphing an inequality? Great! Here you will learn a valuable lesson with this how to do video. A basic tutorial, it explains what kind of dot to use when you are graphing inequalities. Then it shows you how to place the dot on the line and where to draw the line in answer to the problem. If you are just beginning your pre-algebra, then this quick video will get you pointed in the right direction.
How To: Multiply mixed numbers
A guy from the website Math Problem Generator explains, in this video, how to easily multiply mixed fraction numbers. First, he demonstrates that you need to convert both of the numbers to improper fractions. Then he shows that you need to multiply the two resulting numbers together. The resulting fraction is also improper, so it needs to be converted back to a mixed number fraction. In the example that he provides, he shows that one and a half multiplied by one and a third becomes two and a ...
How To: Convert units
In this tutorial the instructor shows how to convert lengths between different units. He show a two step approach where in the first step he setups a relation between centimeters and meters showing that 100 cm equals 1 meter. Now he writes it down in a fraction form and equates it to another similar centimeter upon meter fraction where the value in meters in unknown. Now he cross multiplies and solves the fractions giving the result of the unknown meters. This video clearly explains how to co...
How To: Find the sides of a 30-60-90 right triangle
Does your geometry homework have you stumped about finding the sides of a 30-60-90 right triangle? Have no fear, in this excellent video, Davitily from Math Problem Generator explains the process step by step using easy to follow examples. The video covers common examples and tricky snags that you are likely to encounter on your next math class exam. Stop scratching your head over finding the legs and hypotenuse in your geometry or trigonometry homework by watching this informative video.
How To: Understand and find the mean, median, and mode
The Mean is the average number, the Median is the center of the group and the Mode is the number that shows most often.
How To: Understand basic probability with examples
This is a very basic overview of probability, possibly intended for an eleven year old. It is a very good introduction to probability for one that has never encountered probability before. The instructor is not always clear in his intentions. Someone watching this video would learn about probability, ratios, percentages, and fraction. There is a set of required knowledge to understand what the instructor is talking about. The instructor uses very nice diagrams and also gives nice explanations...
How To: Calculate average acceleration
In this video the author explains how to calculate average acceleration along with some real world examples. Now if we subtract the starting speed of a moving vehicle from its maximum speed and divide it by the time taken to reach the maximum speed from the initial speed you will obtain the average acceleration of the vehicle. The author shows this with a racing video example. If you want compute the average acceleration of a moving object watch this video and use the simple method explained ...
How To: Solve temperature subtraction problems (integers)
An educational video from free math tutoring that shows an easy way to calculate differences of temperature. Many times people commit simple mistakes in subtracting temperatures that lead to illogical results. This video explains a very common pitfall and at the same time, clears up an important concept in temperature subtraction.
How To: Solve an equation by the distributive property
In this simple tutorial the tutor shows how to solve equation by the distributive property. He states that when there is a number which is multiplied to a full equation, we have to multiply each and every term of that equation by that multiplying number. This is called the distributive property as the value is distributed to each and every term inside the equation. He goes on and solves a problem based on this property to give a clear idea of the property. This video shows how to solve equati...
How To: Plot a real number on a number line
This video tells you how to plot a real number on a number line. For example consider -3.1. You know -3.1 lies between -3 and -4. You also know -3.1 lies very close or next to 3. So all you have to do is, put a point just before -3. Now you have marked -3.1 on a number line. Similarly you can point any real number on a number line. It is quite an easy job to plot real numbers on a number line.
How To: Do long division quickly
In this `Math Made Easy' tutorial the instructor shows how to perform Long Division. He gives a simple four step approach where in the first step he shows to divide the first left most number by the divisor and this gives the quotient. Now he shows to multiply the quotient with the divisor to get a value which is to be subtracted from the original divided number. Now in the third step he shows how to bring down the next digit and finally in the last step he asks to perform the same procedure ...
How To: Multiply similar radicals
This video shows how to multiply similar radicals. The basics of doing this is to multiply the root of the radicals. For instance, if you have the cubed root of 14 multiplied by the cubed root of 3, you would only multiply the root numbers. Thus, your answer would be the cubed root of 42. The exercises in this video show a few basic examples, but they can help you down the road when completing more complex problems that involve multiplying similar radicals.
How To: Use the Common Factor factoring method
How to Use the Highest Common Factor method for Factoring
How To: Understand the properties of a parallelogram
This video describes the properties of a parallelogram. It states that it is a quadrilateral, meaning that the four angles inside have to add up to 360 degrees. Both sides of the parallelogram are always going to be parallel. Also, both sides are congruent, as well as the opposite angles. It also has two diagonals that intersect at a midpoint. This video will teach you the main properties of a parallelogram and help you better understand its angles and the physical makeup of it.
How To: Multiply two fractions together
This video demonstrates the simplest method for multiplying fractions. According to the tutor, one should first identify the highest common factor with which to reduce the two fractions, by themselves, and in relation to each other. The numerators of the two fractions are multiplied and the product is written down as the numerator of the resultant. The same operation is carried out on the denominators of the two fractions, resulting in the denominator of the resultant fraction. The final answ...
How To: Solve multi-step equations with absolute values
This educational math video describes the steps necessary to solve an equation involving absolute values. "Absolute value" refers to the magnitude of a quantity and is always expressed as a positive number. You can think of absolute value as the distance a number would be from zero if plotted on a number line. Positive 17 and negative 17 both have the same absolute value because both are 17 units from zero on a number line. Because of this, all absolute value problems have two answers, one wh...
Use the quadratic equation: finding the mirror point
In this video the tutor shows how to find the mirror point using a quadratic equation. He says that to graph a parabola you need to find the mirror point symmetrical to the Y-intercept. Now he explains how to find a mirror point using an example with sample values. He begins with saying that the Y-coordinate of the mirror point is same as the Y-coordinate of the Y-intercept. Now you have to find the x coordinate of the mirror point which he shows that it is double the x-coordinate of the vert...
How To: Do multiplication
For people who are learning how to multiply, this video will show you easily how to multiply numbers with more than one decimal place. Starting with your rightmost digit on your bottom number, multiply with your top number as if you were doing a simple multiplication problem. After you have finished, place a 0 below the rightmost number of your product as a place holder and continue to multiply with your next digit in the bottom number. After you have completed this for all your numbers, you ...
How To: Find the area of a ring w/ the areas of 2 circles
Doina Popovici's video explains how to calculate the area of a ring. She takes us really slow, down to all the steps of this process. It's very important that she explains every math formula and operation so you cannot get lost into this solving. The video uses nice pictures and colors in order to make learning easier and nicer for those who are interested. At the end of the video you'll surely be able to solve by yourself a problem like that and your appetite for geometry will grow significa...
How To: Find an inscribed angle w/ corresponding arc degree
In this tutorial the instructor shows how to find an inscribed angle when its corresponding arc degree is given. He shows how to do this with the help of an example. He states that the angle of arc degree is always twice the angle of its corresponding inscribed angle. So now to find out the angle of the inscribed angle we just need to divide the corresponding arc degree by two. In this video the instructor shows a simple way to find the inscribed angle when its corresponding arc degree is given.
How To: Subtract fractions with common demoninators
A simple video showing how to subtract fractions with common denominators. The denominators is the bottom number of a fraction and the numerator is the top number. So in the fraction of one half 1 is the numerator and 2 is the denominator. If you have fractions with same denominator you can subtract the numerators to find the difference. After the subtracting the numerators add the common denominator to complete the fraction. So five sevenths subtracted by one seventh equals four sevenths. If...
How To: Understand & calculate percentages with word problems
This video begins with teaching of percentage lesson. He is also teaching conversion of percentage to decimal and vise verse. This teaching is using advanced technology note pad when he goes on writing on pad that will display on screen. He is telling that percent 35% in decimal it is .35 and if decimal 2 it is 20% in percent. And he was teaching how to convert fraction to percent by taking one example 7/8 , to convert this first we have to divide 7 by 8 then we get answer .875 then to conver...
How To: Divide two fractions quickly and easily
Need to learn how to divide two fractions? This one minute instructional video will teach you the steps to teach you how to divide. It will take you through the simple process and will make it much clearer. With notes on the side of each step learning to divide will become a breeze. Highlighted notes and numbered steps will make it possible for you to learn the simple process of dividing two fraction and that will later on help you tackle bigger division problems.
How To: Solve for fractions with common denominators
This a simple video illustrating the process of addition involving fractions which have common denominators. The method is really quite easy and straightforward, as demonstrated by this video. One has to simply take the denominator of the sum as the same which is the common denominator of the two fractions being added. Then, one has to take the two numerators, add the, and write their sum as the numerator of the fraction which forms the sum. Finally, the resultant fraction should be reduced b...
How To: Measure angles with a protractor in Geometry
Confused with how to use your protractor for Geometry homework? In this helpful video, Doug Simmons from free math tutoring provides easy to understand classroom examples explaining how to use both sets of numbers on your protractor. Provides easy to remember rules that will keep you from fumbling with the common confusions of protractor use. Doug also explains common mistakes that you should avoid in order to start getting the right answers in your math problems. Finally, math tutorials at y...