Mathispower4u
Write Algebraic Expressions from Statements: Form ax+b and a(x+b)
Write an expression from an expression, verbal to algebraic. A quick video lesson gives pointers on how to write algebraic expressions from words. Stressing important vocabulary and order of the expression help to develop an...
Mathispower4u
Write Basic Expressions from Words Modeling Situations
Writing expressions is a basic skill of algebra—but it's a skill that causes scholars to struggle. A thorough video provides examples and explanations to help individuals understand the process. From defining the variable to representing...
Mathispower4u
Writing Basic Algebraic Expressions (Example 1)
Turning words into symbols, a powerful application of mathematics. A video lesson explains how to rewrite a problem-solving question with expressions. The instructor emphasizes the need to define variables.
Mathispower4u
Write Expressions and Determine the Measure of Complementary Angles (Example)
Investigate algebraic applications of complementary angles. Young scholars watch as the instructor describes and defines complementary angles. He then shows an example of finding an unknown value of x given expressions for a pair of...
Mathispower4u
Write Expressions for Complementary Angles and Supplementary Angles (Basic) (Example)
A straightforward lesson explains the meaning of complementary and supplementary angles. The instructor uses both an algebraic representation and a numeric example to describe each angle pair.
Mathispower4u
Writing Expressions to Solve a Linear Equation App: Stamps
Learners build skills for writing and solving equations with a video that describes the process for writing expressions and then an equation to solve a problem. The problem asks for the number of nickels and dimes needed given a set of...
Howard Hughes Medical Institute
Repellant Ephrin Signals Guide Limb Innervations
The foot bone connects to the leg bone, but how? Learn about how neurons grow in the proper direction thanks to signalling. Observe what happens when they encounter a repulsive ephrin signal and the correction process that takes place.
PBS
Clouds and Weather
The sun heats Earth's surface unevenly, causing crazy weather patterns around the globe. A NOVA video describes the resulting changes in air pressure, temperature, humidity and their impacts on weather. It connects the concepts to...
PBS
Severe Storms
Approximately 2,000 thunderstorms happen simultaneously across the planet at any given time—that's a lot! Beginning with how clouds form, NOVA describes the conditions needed for storms to develop, and highlights the three factors that...
TED-Ed
Why Some Countries Are Poor and Others Rich
It's a question economists, anthropologists, and sociologists have asked themselves since the first regional lines were drawn in the sand. Are there common factors that destine one country to thrive and another to struggle? An...
PBS
The Climate Wild Card
If Earth didn't have clouds, the global temperature would be at least 22 degrees Fahrenheit warmer. Viewers examine the importance of clouds on temperature, climate, and global warming. The video describes the current impact of clouds...
PBS
Why So Many Cloud Types?
Scientists categorize clouds by both height and shape since both traits impact the weather independently. Viewers fly high to learn about the characteristics of each type of cloud. NOVA explains the composition of clouds, the atmospheric...
PBS
The Coriolis Effect Due to Earth's Rotation
Why do big storms spin as they travel? As Earth spins, the movement of air and water change. Viewers observe the Coriolis effect on paper airplanes, water, and even hurricanes—and find the effect is everywhere!
TED-Ed
How Does Hibernation Work?
Did you know animals hibernate all around the world, even in the deserts and tropical rain forests? How do these animals reach extreme body temperatures and undergo a decreased heart rate that would be deadly to non-hibernating animals?...
Mathispower4u
Evaluate An Expression Using The Order of Operation (Example 2)
What comes first, the exponents or the multiplication? Follow the order of operations and you will never make a mistake! Young scholars learn the order of operations and then watch as the instructor evaluates a five-step problem. The...
PBS
Biogeography: Where Life Lives
Biogeography is the study of the geographical distribution of plants and animals. NOVA's Evolution Lab explains how organisms on different continents can be so closely related. The resource discusses the processes that bring life from...
PBS
Evolution 101
Have you been shaped by evolution? A short video introduces the idea of evolution through examples of natural selection, reproduction, traits, and more. The video exists as a small part of a series from the NOVA Evolution Lab.
Mathispower4u
Translating Statements to Algebraic Expressions (Applications)
Math is like another language with a vocabulary all its own. Translating verbal statements to mathematic symbols is a challenging task for learners. The video instruction provides several examples viewers watch—and rewatch—to improve...
Mathispower4u
Write a Numerical Expression in the Form a-b and a(b+c) (Example)
To add or subtract ... how do you make the decision? The video instructor explains the process of writing a numerical expression from a verbal expression. While writing the expressions, he provides explanations for his decisions.
Mathispower4u
Writing Algebraic Expressions (Examples)
Express yourself! Using a table method, the lesson presentation explains how to convert a verbal expression into an algebraic expression. The examples include problems with a variety of operations.
Mathispower4u
Writing Algebraic Expressions
Turning words into symbols is a powerful way to use mathematics. A direct video lesson presents several word problems requiring an algebraic expression. After defining the variable, the presenter shows how to write an expression...
Mathispower4u
Introduction to Variables and Variable Expressions
Variable expressions can take many shapes and forms. Learners review the different components of many different variable expressions in a straightforward video lesson. After introducing vocabulary, the instructor uses context to write...
Mathispower4u
Evaluate An Expression Using The Order of Operations (Example 3)
Multiply, add, exponents, parentheses ... what do I do first!?! Young mathematicians watch as the video instructor works through a problem that includes all steps of the order of operations. Explanations help learners understand how...
Mathispower4u
Evaluate An Expression Using The Order of Operations (Example 1)
Introduce your classes to order of operations with a simple example. Showing how to apply the order of operations, the lesson presenter evaluates a two-step expression. Learners see how the order of operations affects the sequence of...