Instructional Video3:35
Curated Video

How to Calculate Cost After Markdowns

9th - 12th
In this short math video we will demonstrate we know ho to calculate cost after markdowns. We will first understand that the original cost of the item is on sale for 10% off. We will calculate 10% of the original cost and subtract the...
Instructional Video0:55
Curated Video

Write a Proportion to Solve a Problem

9th - 12th
In this short video, we will solve a standardized test question by writing a proportion. We will identify key terms and review proportional relationships.
Instructional Video0:50
Curated Video

How to Write a Ratio

9th - 12th
In this short video we will write a ratio based on a real world situation.
Instructional Video2:26
Curated Video

Using the Divisible by 9 Rule

9th - 12th
In this short math video we will answer a standardized math test question where we need to determine which number value is evenly divisible by 9. We will review the divisible by 9 rule and apply it to each of the answer choices. We will...
Instructional Video1:30
Curated Video

How to Choose an Inequality for "More Than"

9th - 12th
In this short video we will answer a standardized math test question where we are asked to identify the correct graph of an inequality represent in words. We will identify the key words given in the real world situation that determine...
Instructional Video1:00
Curated Video

How to Describe the Solution of an Inequality

9th - 12th
In this short video we will answer a standardized math test question where we are asked to describe the solution of an inequality. We will begin by graphing the inequality on a number line to visually represent the solution set. We will...
Instructional Video0:58
Curated Video

How to Find the Midpoint

9th - 12th
This video provides a clear explanation on how to find the midpoint of a segment using the given coordinates of two points. The teacher walks through the steps and provides an example problem with a solution.
Instructional Video1:54
Curated Video

How to Convert Scientific Notation to Standard Form

9th - 12th
In this video, we learn how to convert a number written in scientific notation to standard notation. The teacher explains the process step-by-step and shows an example of converting 8.25 * 10 to the 5th to 825,000.
Instructional Video2:25
Curated Video

How to Find Compound Probability Using a Sample Space

9th - 12th
In this video, the teacher explains how to solve a standardized math test question involving compound probability. The question asks for the probability of getting a sum of 8 when rolling a number cube twice. The teacher uses a tree...
Instructional Video1:02
Curated Video

How to Divide by a Decimal

9th - 12th
In this short video we will answer a standardized math test question where we are asked to simplify an numerical expression by dividing by a decimal. We will set up long division and review how to move the decimal point. We will divide a...
Instructional Video7:32
Curated Video

How to Create and Solve an Equation and an Inequality

9th - 12th
In this math video we will answer an open response question from a standardized math test. We will be asked to write an equation to represent a real world situation. We will be asked to interpret and evaluate a situation for a specific...
Instructional Video1:45
Curated Video

Recognize a Simpler Expression

9th - 12th
In this short video we will answer a standardized math test question where we are given an algebraic expression that represents a real world situation. We are asked to recognize and identify which solution represents a simplified...
Instructional Video1:38
Curated Video

How to Convert Inches to Yards

9th - 12th
In this short video we will answer a standardized math test question where we are asked to convert inches to yards. We will use a conversion ratio and a proportion to convert inches to feet. We will use the Cross Product Property to...
Instructional Video0:57
Curated Video

How to Find Rate

9th - 12th
In this short video, we will solve a standardized test question about finding rate in miles per hour. We will learn that rate is a ratio. A ratio that is divided will become a unit rate or miles per one hour.
Instructional Video0:55
Curated Video

Understanding How to Multiply by a Negative Sign

9th - 12th
In this short video we will answer a standardized math test question where we are asked to simplify an integer expression involving a negative sign and an "invisible" one. We will first rewrite the expression to understand what we are...
Instructional Video1:39
Curated Video

How to Find the Volume of Cubes

9th - 12th
In this short video we will answer a standardized math test question where we are asked to find the volume of a figure made up of cubes. We will break this down into a smaller problem and find the volume of one cube. We will then...
Instructional Video9:20
Professor Dave Explains

Organic Chemistry Practice Exam 1

12th - Higher Ed
Organic Chemistry Practice Exam 1
Instructional Video1:01
Curated Video

How to Find a Missing Value Using Mean

9th - 12th
In this short video we will answer a standardized math test question where we are asked to find a missing value using the mean. We will write an equation representing the mean of 8 values. We are given the mean of the 8 values and asked...
Instructional Video0:59
Curated Video

Using Properties of Exponents

9th - 12th
In this short video we will answer a standardized math test question where we are asked to simplify an expression involving powers. We will review and use the Product of a Power Property. We will identify that the powers have the same...
Instructional Video1:35
Curated Video

How to Divide a Decimal by a Decimal

9th - 12th
In this short video we will answer a standardized math test question where we are asked to divide a decimal by a decimal. We will understand division to be dividend divided by the divisor and equals the quotient. We will review that the...
Instructional Video0:57
Curated Video

Finding Width Using the Area

9th - 12th
In this video, I teach how to find the width of a rectangular garden using its area and length. I provide a step-by-step guide on how to solve for the unknown variable and emphasize the importance of drawing a labeled picture. This is a...
Instructional Video1:24
Curated Video

How to Analyze a Graph

9th - 12th
In this short math video we will answer a standardized math test question where we are asked to analyze a graph. We will first identify what the graph represents using the labels of the x and y axes. We will interpret a point on the...
Instructional Video2:09
Curated Video

How to Write an Algebraic Expression

9th - 12th
In this short video we will answer a standardized math test question where we are asked to identify the correct algebraic expression to represent a real world situation. We will identify key word phrases in the problem and represent them...
Instructional Video1:43
Curated Video

Determine the Solutions to an Inequality

9th - 12th
In this short video we will answer a standardized math test question where we are asked to identify values that are solutions of an inequality. We will evaluate the inequality using the numerical value answer choices until we have...