https://www.youtube.com/embed/kuHWXct8i0g So you’re about to teach, multiplying, fractions and you’re looking for an activity which is engaging and conceptually make sense. Well, this activity is for you hi, my name’s Tom Moore, and if you haven’t yet watched the video on partitioning the hole using your eye well then I recommend you go back and watch that now, because we’re going to be using that skill a number of times Through today’s activity now, you’ve been given the challenge of teaching students how to multiply fractions, wouldn’t it be cool if we ran an activity where students were able to discover this for themselves and truly understand what it is it’s happening when we do multiply fractions well, we’re Going to go through exactly this in this activity, let’s check it out by starting off with two fifths, multiplied by three quarters. So, first of all, we need to know…

https://www.youtube.com/embed/K2m2V98DDAg Hey guys! Welcome to this video on how to cross multiply fractions. When cross multiplying fractions, the name sort of hints at how this is actually done. You literally multiply across. Let’s say you have two fractions that are set equal to each other a/b=c/d, well to cross multiply them you multiply the numerator in the first fraction by the denominator in the second fraction, then write that number down. Then you multiply the numerator of the second fraction by the denominator of the first fraction. Here is what that looks like: The reason we cross multiply fractions is to compare them. Cross multiplying fractions tells us if the two fractions are equal or which one is greater. This is especially useful when you are working with larger fractions that you aren’t sure how to reduce. Let’s take a look at some numerical examples: Find which of the two…

https://www.youtube.com/embed/ZDExOt6pOg0 [, Music, ], [ Applause, ] hi there. Thank you for checking out my channel. Thank you for clicking on this video. If this is the first news that your washing from this channel, I’m a big educational motivational videos for you guys, this video is actually part of my series now attitude test helpers and today we talk about another topic on math in this part of my math Mundy’s Series, because every Monday, I post a new video lesson on math – and this is actually partners here – is called fractions long ago about two years ago. I started in my first series, our first videos on fractions, but I figured it’s time for a revamp. I’M adding some other things, including new tips, kata laga, on how to do it faster, and that is exactly what we’re going to talk about today. We’Re actually going…

https://www.youtube.com/embed/VwW9XSSNc60 All right. So you know what grades you got, but have you ever wondered how they calculate your standard GPA? Hi, I’m Jimmy, and we’re here to show you exactly how they do that. Now, typically, this is the typical grading scale. For every A that you get, it’s…each A is worth 4.0 grade points. A B is worth 3.0 grade points. A C is worth 2, D is 1, and, of course, F, you don’t get any grade points. But here’s a quick example as to how you calculate your standard GPA based on a typical report card. Now, suppose you have two As, two Bs, and one C in the five courses that you took. Basically, you would take each number and you multiply by how much each letter is worth. So let’s just say because two As because each A is worth four points, you take…

https://www.youtube.com/embed/bcM5J-wYHjE This video is provided as supplementary material for courses taught at Howard Community College and in this video I’m going to show how to convert between inches, feet, yards and miles. Now before we can actually do a problem, we have to understand how these four units of measure relate to each other. So let’s start with that. One foot is equal to 12 inches. Another way to say this would be that there are 12 inches in one foot. One yard is equal to 3 feet. Now very often yards are expressed in terms of inches. So we can find what one yard equals in inches.We can do it this way: if one yard equals 3 feet and each of those 3 feet has 12 inches, if we multiply 3 times 12 inches, we should get the number ofinches in a yard. So 3 times 12 is 36.…

https://www.youtube.com/embed/-Xt4UDk7Kzw Hundred, so thirty percent becomes thirty one out of a hundred, or thirty out of a hundred. Then, to reduce the fraction, we can divide it by each number ten, and here’s a hot tip, When we do this, we can just go out zero in every number, because that will do the same Something as divided by ten. This leaves us with three tenths. So thirty percent is three tenths. Now let’s get this decimal number. Well we know where the place of the tenth is, so if we have three tenths, we just need the place Three in the tenth place, until zero three. There are three different ways for expressing the same value. Here’s another quick tip, when converting from percentages directly to decimals, all of them What we have to do is move the decimal number twice to the left, because a hundred are two…

https://www.youtube.com/embed/0N1dFJl9oAI HELLO, Mr. Tarrou! Ok, today we are going to be solving polynomial inequalities. Now most of these polynomials are going to be quadratic polynomials. So you are going to see a lot of things that look familiar like factoring and the quadratic formula. But there is one extra step that we are going to have to take a look at. If you want to solve a polynomial inequality the first thing that we are going to have to do is set the polynomial equal to zero. If you have a square term and a single degree term you cannot just get that variable alone. You got to get that equation equal to zero and then factor or use the quadratic equation…or if it is a higher order polynomial you might be doing some synthetic division or factoring by grouping.You want to solve it for zero. These values in an…

https://www.youtube.com/embed/atS4wX8I9H0 >> This video is about the sample variance and the sample standard deviation. Variance and standard deviation is about the spread of the data. The more the data spread out the larger the variance or the larger the standard deviation. Standard deviation is just the square root of the variance. And we’re going to do an example here that will help you understand the concept of the variance and the standard deviation. So, let’s define the sample variance. Sample variance is the average which is the keyword of the squared deviations, another keyword, from the sample mean, mean is another important word, another keyword.So, the sample variance is represented as esquire and that’s equal to the sum of the squared deviations. From i equals 1 to n divided by n take away 1. XI we know as the points and x-bar you know as the mean and so the…