Evaluate algebraic expressions by substituting a value for the variable in an expression.

Equations with Fractions demonstrates how to solve one-step equations by using reciprocals when the coefficient of the variable is a fraction.

In this video, the teacher explains how to solve a real-world math problem involving percent of increase. The problem involves expanding a rectangular patio by increasing the length by 50% and the width by 20%. The teacher walks through...

You are gonna rock that AP Physics Exam! Best of luck to you my friends!

In this video, a math teacher demonstrates how to interpret a graph and answer standardized math test questions. The teacher covers topics such as finding the distance a car traveled in a certain amount of time, calculating the average...

In this video, the teacher explains how to write the equation of a line using slope intercept form. They provide step-by-step instructions on how to identify the slope and Y intercept of a line using given information, such as a point...

In this video, the teacher guides the viewer through solving a standardized math test question that requires making an inference from data. The question involves estimating the number of people in a city who own a car based on a random...

An introduction to Conventional Current and Direct current. Includes conventional current direction and dimensions. We even talk about the Bohr model of the atom. And, of course, an example problem where we figure out current and the...

Here we test the money saving advice given on a package of energy efficient light bulbs. We also define KiloWatt Hour; a term that often confuses students. Oh, we also determine the resistance of the light bulbs, ya know, just because we...

An introduction to Resistance. We also define ohmic versus non-ohmic with graphs. We define the slope of the graph as resistance. There is also a discussion of a graph of Electric Potential Energy as a function of Position and we compare...

This video continues covering the proper way to solve quadratic equations of the form ax^2+bx+c=0 by factoring. This video goes over an example where the coefficient of the quadratic term is greater than 1. The example involves an...

Algebra 49, 50 and 51 present three real-world problems which can be solved using systems of three linear equations in three variables. This chapter shows how the parameters of an equation for a circle can be determined, given three...

This chapter introduces the concept of “pivot columns” and shows how they can be used to determine whether a system of linear equations has a single unique solution, no solutions, or infinitely many solutions, simply by looking at the...

Solutions to Problem 17.

In This Episode, Tyler Teaches Us About Using Proportional Relationships - Geometry

What are the 9 properties you can apply to proofs? What else can you apply to proofs? Geometric Proofs, Part 3

Exponentiation is shorthand for repeated multiplication, just like multiplication is shorthand for repeated addition. Multiplied or divided exponential terms with like bases can be combined by adding or subtracting their exponents.

Mr.p gives basic suggestions for how to approach the free response question portion of the AP Physics 1 exam.

We need to know the initial velocity of a projectile leaving the Nerd-A-Pult. That means we need the initial speed and the initial angle. This video shows exactly how I measured both.

When the elimination method is used to solve a system of linear equations, viewing the geometrical changes that happen to the system during this process can give insight into the mechanisms which underlie the logic behind the algebraic...

Before the method of completing the square was developed, only very limited types of quadratic equations could be solved. This method eliminated those limitations, allowing the solutions of any quadratic equation to be found. As...

👉 Learn how to find the derivative of a function using the power rule. The derivative of a function, y = f(x), is the measure of the rate of change of the function, y, with respect to the variable x. The process of finding the derivative...

In This Episode, Tyler Teaches Us About Inverse Property of Multiplication

In this lecture we examine one application that can be solved by a system of linear equations with four or more variables, modeling and predicting the flow of traffic through a network of streets. Examples are given showing how the model...