Howard Hughes Medical Institute
Continental Movement Over the Past 200 Million Years
Go for a ride on the continental drift. A video animation shows the movement of land over a period of 200 million years. The lesson instructor explains the shift during the animation and gives pupils a unique viewing perspective to...
Howard Hughes Medical Institute
Daly's Model of Subduction
The subduction model: helping learners understand how continental drift is possible. An animation demonstration illustrates the process of subduction through an analysis of the earth's layers. The instructor narrates the process as the...
Howard Hughes Medical Institute
Holmes' Model of Convection
Convection currents do more than just bake a cake. A quick lesson demonstrates the convection currents of the earth and how they contribute to continental drift. An animation illustrates the movement of the currents and demonstrates how...
Howard Hughes Medical Institute
Plate Tectonics
The plates of the earth may be shifting right under your feet! Learn the causes and consequence of this shifting through an informative a video lesson. Scholars explore the effects of the movement on a local, global, and even planetary...
Howard Hughes Medical Institute
Malaria: Human Host
Malaria is a parasite whose life cycle bounces between mosquitoes and humans. An informative video describes how malaria moves through human systems before arriving in the liver. Once in the liver, the instructor describes how the...
Howard Hughes Medical Institute
Malaria: Mosquito Host
Mosquitos can be more than just annoying, they may be deadly. A video presentation explains how mosquitos transmit the malaria virus to humans. The lesson highlights how the disease manifests itself in the mosquito before it bites a...
Mathispower4u
Solving an Equation with One Set of Parentheses
Time to distribute some learning! The video lesson teaches how to solve an equation by applying the distributive property. Learners watch as the instructor completes each step, explaining as he goes. The first step to solving uses the...
Mathispower4u
Solve an Equation with Variable on Both Sides
Solving equations is the groundwork for all of algebra. A video presentation explains the steps for solving an equation with variables on both sides. Using a different color for each step, the instructor shows how to manipulate the...
Mathispower4u
Solve a Linear Equation With Decimals and Variables on Both Sides (Example)
Create better equation solvers! The video presentation tackles solving an equation with variables on both sides with decimal coefficients. The instructor explains how to multiply by a constant to eliminate the decimals before continuing...
Mathispower4u
Solving Multiple Step Equations
Not only can equations have many steps to solve, but those steps can look very different from equation to equation. The narrator of the video lesson explains the steps to solving six different multi-step equations. He provides...
Mathispower4u
Writing Variable Expressions (Examples)
Variables are the name of the game. The video instructor explains the importance of defining a variable and then models how to write an expression. He reviews three different problem scenarios and then builds expressions to model each...
Mathispower4u
Write Algebraic Expressions (Example)
Expressing words as numbers and symbols ... that is the task at hand. Given a contextual situation, it is often necessary to rewrite the information as expressions. The video demonstration shows two examples of this concept and gives...
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...
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
Evaluating Algebraic Expressions
What types of mistakes do your classes make when evaluating algebraic expressions? A direct video lesson explains the process of evaluating algebraic expressions by substituting values for multiple variables. The instructor highlights...
Mathispower4u
Simplify Polynomial Expressions - Add/Subtract/Multiply (Example)
How are your classes with polynomial operations? If they need a little extra support, this is the video for you! The lesson instructor explains several examples building from a simple addition of polynomials to a more complex example...
Mathispower4u
Simplify Exponential Expressions: Product and Power Rule (Example)
See the properties of exponents come alive! Young scholars watch as the video instructor explains the properties of exponents highlighting the product and power rules. He details several examples that your pupils can watch and rewatch to...
Mathispower4u
Expanding and Evaluating Exponential Notation (Example)
What do exponential expressions and lungs have in common? They both can expand and contract! A short video lesson shows how to expand exponential expressions. Examples include those with and without parentheses.
Mathispower4u
Properties of Exponents
Exponents can be powerful! A thorough video lesson explains all of the properties of exponents. The video instructor provides both general and specific examples of each property.
Mathispower4u
Write Repeated Multiplication Using Exponents (Example)
Strengthen your classes' understanding of an exponent before tackling its properties. A quick video lesson reviews the role of an exponent by rewriting expressions with repeated multiplication. Learners watch as the instructor explains...
Mathispower4u
Zero Exponent Property (Example)
Zero in on a commonly mistaken property. The video instructor shows several examples of expressions raised to the power of zero. Each example incorporates a different exponent property and highlights common misconceptions.