Curated OER
What are Inverse Operations?
Explore inverse operations. Video viewers watch as a teacher shows how to "undo" an operation by using the opposite operation. By the end, learners should grasp that addition is the opposite of subtraction and division is the opposite of...
Curated OER
What's the Addition Property of Equality?
A basic definition of the addition property of equality. Use this video to recap a lesson on the addition property of equality, or have learners use it as a reference tool when they are working at home.
Curated OER
The Union of Sets
The union of two or more sets is well defined in this two-and-a-half-minute video. A clear definition is provided alongside a concrete example, which makes for good teaching.
Curated OER
Changing Mixed Fractions into Improper Numbers
Bring home a math tutor for your budding math geniuses. Duane explains how to convert a mixed fraction into an improper number. This clip is helpful because he first draws what the mixed fraction represents and how it would look as an...
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
First Grade Math Lessons: First Grade Math Addition Tables
How do we, as educators, build a solid mathematical foundation for young learners? This video suggests using flashcards, memorization, and addition tables. How to use flashcards, tips, and things not to do are all covered.
Curated OER
How to Teach Kids Kindergarten Math: How to Tell Kids Addition Stories
Here is a tutorial video made just for parents who home school their children. The clip shows how a parent can teach basic addition skills through story problems and drawings.
Khan Academy
Singapore Math: Grade 3a, Unit 2 (Part 4)
Use the Singapore math methods to work through simple problems. Visual representations of word problems allow viewers to start making predictions and estimating the answers. This is a good way for class members to use various methods to...
Curated OER
What are Inverse Operations?
Explore inverse operations. Video viewers watch as a teacher shows how to "undo" an operation by using the opposite operation. By the end, learners should grasp that addition is the opposite of subtraction and division is the opposite of...
Curated OER
What's the Addition Property of Equality?
A basic definition of the addition property of equality. Use this video to recap a lesson on the addition property of equality, or have learners use it as a reference tool when they are working at home.
Curated OER
How Do You Add Decimals?
Need a review for adding decimals? Make sure to line up the decimals, write in zeros for placeholders, add the numbers, bring down the decimal. There you have it.
Curated OER
How Do You Rewrite Subtraction as Addition?
A quick look at how to write a subtraction as an addition problem. The first value stays the same and the second value becomes the opposite value which is added to the first.
Curated OER
How Do You Add Variables that Are the Same?
The teacher explains that adding many variables that are the same is like multiplying them. She writes one example using whole numbers and one example with variables.
Curated OER
How Do You Add Whole Numbers?
Adding whole numbers can be tricky if you don't get all your numbers in alignment. So make sure to get the place value correct.
Imagine Learning Classroom
Learn Zillion: Connect Ideas in an Essay Using Transition Words
In this lesson, you will learn how to connect ideas in a text by using example, addition, and contrast transitions. [4:40]