Signed Numbers: Summary: Signed Numbers
This clip summarizes the use of both negative and positive numbers, as well as their location on the number line. "All these numbers," the clip states, " are called 'signed numbers'." The clip also reviews how to determ..
Solving Equations: Building and Solving A New Equation
This clip explains how to work through an equation step by step, beginning by "collecting" all the unknowns on one side of the equation and all the constants on the other.
Solving Equations: Equation Involving Subtraction, An
This clip demonstrates how to solve an equation involving subtraction, X-9=7, which eventually comes out to be X=7+9, or 16.
Solving Equations: Introducing Equations
This clip introduces a type of number sentence known as an equation, which the clip describes as "a kind of balance scale" having two parts connected by an equal sign.
Solving Equations: Solving An Equation
This clip describes the steps in solving a simple equation. It states that "...the important thing is to study the equation, decide what you want to move around or get rid of, and proceed step by step." It also advises t..
Solving Equations: Summary: Solving Equations
This clip summarizes how to solve equations. It describes the relationship between word problems, number sentences and equations, noting that the latter are, " nothing more than a statement that two mathematical express..
Solving Equations: Unknowns, Coefficients and Constants
This clip introduces the terms "unknowns," "constants" and "coefficients," and explains the role each plays in a word problem.
Solving Equations: Using An Equation to Solve a Word Problem
This clip explains that, " what makes equations tricky is that there's no set rule for doing them all. You have to size up each one separately, decide what needs doing, and get it done." The clip then goes through an eq..
Square Roots: Couple of Practical Problems Involving Square Roots, A
This clip presents practical square root problems involving a garden and swimming pools. It explains that if we know the area of a square, we can figure out its side, because the side must be the square root of the area...
Square Roots: Defining and Finding Squares and Square Roots
This clip explains that the square of a number is the product of that number multiplied by itself. The clip then explains the relationship between a number and its square root, noting that the number 1 is its own square ..