Curated OER
How Do You Graph a Line If You're Given the Slope and a Single Point?
You have a slope and a given point and now you have to graph it. Begin by drawing a graph and then plotting the given point. Remember that slope is rise over run. So from the given point move the appropriate spaces to plot the next...
Curated OER
What Does Positive Slope Mean?
How can two negative values create a positive slope? Rise over run, a negative divided by a negative. Watch the instructor explain just how that works.
Curated OER
What Does Negative Slope Mean?
Rise over run? The instructor explains two ways that a slope can be negative. It's not as complicated as you may think. Follow along on this lesson and see for yourself.
Khan Academy
MTEL Math Practice Test: 1-4
Are you worried about the MTEL? Never fear—Sal is here! Designed for adults seeking their teaching credentials in Massachusetts, this series of videos guides future teachers through a practice test for the Math MTEL. The valuable...
Curated OER
How Do You Subtract Integers Using a Number Line?
There are times when you might want to use a number line to help you visually understand what is happening mathematically. Subtracting integers might be one of those times. So take a look and see which direction you need to move on the...
Curated OER
How Do You Add Two Negative Numbers?
A very simple explanation of adding two negative numbers together. Well, it's a mathematical explanation that includes moving the negative and using absolute value. Just watch the instructor as she shows you the steps and it will make...
Curated OER
How Do You Figure Out a Template for Factoring a Trinomial?
Given a trinomial to factor, figure out the signs that will be in the resulting binomials. There are three cases for the combination of signs. Check out this video, it will prove to be very helpful to know how to determine the signs...
Curated OER
How Do You Use a Shortcut to Factor a Perfect Square Trinomial?
It's not really a shortcut but an equivalent equation. That's how these two perfect square equations work. So when you see an expression written out and it fits the perfect square of a trinomial criteria it can be rewritten in the...
Curated OER
Adding Integers with the Same Sign (2)
As a follow up to his video on adding integers with the same sign, Duane created this shortcut video to make life easier. He tells learners they can ditch the number line and just add the absolute value of each number and attach the sign.
Curated OER
Adding Integers with the Same Sign (1)
Duane uses a vertical number line to show learners how to add integers with the same sign. The vertical number line is an effective visual tool that will help viewers better understand exactly what happens when two positive or two...
Curated OER
Adding Integers with Different Signs (2)
Boy I would have loved adding integers if I had known this short cut. Without explaining why it works Duane tells viewers that to determine your answer's sign when adding integers with different signs all they need to do is write down...
Curated OER
Adding Integers with Different Signs (1)
Using that neat vertical number line, tutor Duane shows what happens when you add two integers together when they have different signs. This is a great visual tool and may help learners who have a difficult time conceptualizing this...
Curated OER
How Do You Use a Shortcut to Factor a Perfect Square Trinomial?
It's not really a shortcut but an equivalent equation. That's how these two perfect square equations work. So when you see an expression written out and it fits the perfect square of a trinomial criteria it can be rewritten in the...
Virtual Nerd
What's Positive Correlation?
If the y-value increases as the x-value increases then you have a positive correlation. Meaning that the line-of-fit has a positive slope.
Curated OER
How Do You Add Two Negative Numbers?
A very simple explanation of adding two negative numbers together. Well, it's a mathematical explanation that includes moving the negative and using absolute value. Just watch the instructor as she shows you the steps and it will make...
Curated OER
How Do You Subtract a Positive Number from a Negative Number?
Subtract a positive number from a negative number. Switch the signs, add the terms, use absolute value, but leave the first negative outside. Confusing? Watch the instructor explain the steps to learn this method.
Curated OER
How Do You Add a Negative Number to a Positive Number?
Combine a negative number with a positive number. How? Follow along and see the instructor explain what to do.
Curated OER
How Do You Add and Subtract a Bunch of Numbers with Different Signs?
So you have an expression of positive and negative numbers and you want to add and subtract them. Do you do the operations in order that they are written? Do you combine some? Do you move them around? Do you change their signs? The...
Imagine Learning Classroom
Learn Zillion: Compare More Than Two Positive or Negative Numbers
In this lesson, you will learn about comparing more than two positive or negative numbers in real-world situations by using a number line. [5:01]
Other
Professor Freedman's Video Snippets Add/subtract Integer
Professor Ellen Freedman uses this very short video to explain how to add and subtract positive and negative integers. She offers tips on how to keep track of whether the answer is positive or negative.