Curated OER
How Do You Solve a Word Problem Using an Inequality With Variables on Both Sides?
Don't skip this word problem! Take one piece at a time in writing out this inequality. Once you have an expression that represents the words in this inequality, the rest will seem easy. So watch this video to get a better understanding...
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How Do You Solve an Inequality With Variables on Both Sides?
A direct instructional video of how to solve an inequality when you have the same variable on both sides of the inequality sign, this resource could be used in class or at home.
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How Do You Solve a Multi-Step Inequality Using Reverse Order of Operations?
Investigate inequalities with this instructional video. A lecturer presents an inequality that will take multiple steps to complete and works through the problem step-by-step, numbering and labeling each action she takes. This video is...
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How Do You Solve and Graph a Two-Step Inequality?
Approach inequalities in a new way with this video! This video gives step-by-step instruction on how to solve a two step inequality and then graph the answer. Learners could use this video as a reference as they do homework, or you might...
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How Do You Graph an Inequality or an Infinite Set on a Number Line?
The teacher shows how draw a number line and graph an inequality using an open circle. She also shows how to graph a set of numbers on a number line.
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How Do You Figure Out the Rate Traveled if You Know Distance and Time?
If you know two values and are looking for a third, you can set up an equation and solve to find your answer. In this problem you know distance and time, and you are looking for rate of speed. Use the distance formula to set up your...
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What is the Formula Connecting Distance, Speed, and Time?
The formula for uniform motion, meaning something is moving at a constant speed, is d=rt. This involves distance, rate, and time. If the word problem gives two of any of these values, the third unknown value can be found.
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Why Are the Angles of Equilateral Triangles Always Equal to 60¼?
Learn how to identify an equilateral triangle by evaluating its congruent sides. Once you've determined that that sides are congruent you'll be able to use the triangle sum theorem to determine the angles in an equilateral triangle. This...
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How Do You Find Missing Angles in a Triangle With Variables?
Are you working on finding the missing angles of triangles in your class? Consider this video. An instructor uses the triangle sum theorem to create an equation that helps her find the missing angles. She explains each step and writes...
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How Do You Rotate a Figure 90 Degrees Clockwise Around the Origin?
Show your class how to rotate a figure 90 degrees clockwise around the origin of a coordinate plane. The lecturer explains the concepts and steps involved in reflecting a figure across the y-axis. Consider providing this for learners as...
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How Do You Rotate a Figure 270 Degrees Clockwise Around the Origin?
Pupils who view this tutorial will gain a better understanding of how to rotate a figure around the origin of a coordinate plane. This video covers how to rotate clockwise and counterclockwise to achieve the same purpose. Show this video...
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What is a Transformation?
A transformation is the process of changing the graph of a figure or a shape. The instructor introduces the four most common transformations: reflection, dilation, rotation, and translation. So watch as she draws the transformations on a...
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What are Perpendicular Lines?
Perpendicular lines intersect to form right angles - four of them to be exact. Vertical angles, congruent angles, 90 degrees each, these are some of the special properties of perpendicular lines. Watch this video to find out a couple...
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What is a Line Segment?
Line, line segment, segment of a line, what does it all mean? Endpoints, midpoints, names of lines, names of segments. Watch this video and learn the definitions of these terms.
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How Do You Find a Value for x that Makes Two Lines Parallel?
So you have a transversal line intersecting two parallel lines and you are looking for a value that would make two corresponding angles congruent. You have all the information needed to write an equation to find the value. So write that...
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How Do You Find Angle Measures for Adjacent Angles?
Two angles with given values are adjacent. Together they are 172.5 degrees. How do you find the degree of one of the angles? You will have to write an algebraic equation with the given information to solve for the value of the variable....
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What are Complementary Angles?
Supplementary, obtuse, acute, complementary angles. It's good to know what all of these mean, but let's focus on one at a time. Complementary angles always add up to 90 degrees. So if given one angle in a complementary angle problem, the...
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How Do You Reduce A Fraction?
Reduce, reduce, reduce. Young mathematicians should learn this and make it their mantra. Reduce fractions before doing anything else to them. Practice reducing single fractions, practice reducing fractions that are being multiplied by...
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What are Equivalent Fractions?
Check this out! Make equivalent fractions by multiplying or dividing a given value. It's a useful skill to have in math. Watch this video as the instructor demonstrates several ways to get equivalent fractions.
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What's a Prime Number?
What is a prime number? Is zero a prime number? Is one a prime number? No?! Is two a prime number? Yes. So what is the definition of a prime number? A prime number is a number that can only be divided by 1 and itself. Watch this short...
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How Do You Find the Prime Factorization of a Number Using a Tree?
A factor tree? What's a factor tree? A tree of factors? A factor tree is a method use to do the prime factorization of an integer. It's not complicated. Watch the teacher as she explains the steps and shows how to write the answer as a...
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How Do You Find the Greatest Common Factor If There are No Common Factors?
Use prime factorization to find the greatest common factor of three given values. Okay. But what if there doesn't seem to be any integer that is common in all three given values? Well, then, the greatest common factor must be 1. Not sure...
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How Do You Find the Greatest Common Factor of Two Numbers by Listing Their Factors?
Greatest common factor, least common multiple, prime factorization, multiples, factors, oh my! The instructor in this video shows how to make different lists of factors to find the greatest common factor. So take a peak and see how to...
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How Do You Find the Greatest Common Factor of Two Numbers Using Prime Factorization?
Here's a quick review on how to use a prime factor tree to find the greatest common factor of two numbers. This is one of the simplest ways to find the greatest common factor. So watch this video to get a refresher on how to do prime...