Curated OER
Change Fractions Into Decimals
This is a terrific way to help learners understand how decimals can be described as fractions. Using 2.675 as the first example, the instructor leads viewers through the process of describing this number as a fraction. She then addresses...
Curated OER
How Do You Write a Whole Number Given in Expanded Form in Standard Form and in Words?
You've been given a number written in expanded form. You have to write it in standard form, and in word form. The instructor does a nice job illustrating and explaining just how to do both of these operations.
Curated OER
Singapore Math: Grade 3a, Unit 1 (part 3)
Through a review of reading and writing numbers to 10,000, learners explore this key concept. The instructor also leads a discussion of number progression. By using visual cues and brilliant colors, Sal makes it easy to understand how to...
Curated OER
Singapore Math: Grade 3a, Unit 2 (part 8)
Provide your class with a developmentally sound way to view four-digit subtraction. Sal uses strong visual aids to show what each step in the subtraction process literally represents. Everyone will be able to see the mathematical process...
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
Singapore Math: Grade 3a, Unit 2 (part 4)
Use the Singapore math methods to work through simple problems. The visual representation of word problems allows viewers to start to make predictions and estimate the answers. A good way for class members to use a variety of methods to...
Curated OER
Singapore Math: Grade 3a, Unit 1 (part 2)
As part of a series on numbers less than 10,000, a thorough presentation demonstrates how to visualize numbers in groups of a thousand. The instructor then describes how to read and write numbers less than 10,000.
Curated OER
How Do You Write a Whole Number Given in Expanded Form in Standard Form and in Words?
You've been given a number written in expanded form. You have to write it in standard form, and in word form. The instructor does a nice job illustrating and explaining just how to do both of these operations.
Curated OER
Singapore Math: Grade 3a, Unit 2 (part 3)
Using three-digit numbers, this video discusses the process used to add and subtract with regrouping. The instructor also focuses on how to determine when and when not to regroup. It describes exactly what is happening when a problem...
Curated OER
Singapore Math: Grade 3a, Unit 2 (part 6)
Sal reinforces the concepts taught in the first video on Singapore four-digit addition with a series of addition problems. The video would be a great homework assignment. Ask your class to view it at home and write a paragraph on the...
Krista King Math
Value that Makes Two Tangent Lines Parallel
Perform parallel calculations to find equal slopes. Using the formula for the equation of the tangent line to a point, the resource sets out to find two points with a difference of one that have parallel tangent lines.The 25th video in a...
Krista King Math
Repeating Decimals
How many decimal places should be included in an answer? The answer is easy when the decimal repeats: all of them! Show classes how to write a represent a repeating decimal using notation. The video demonstrates different situations that...
Curated OER
Adding Whole Numbers and Applications 1
Adding double-digit numbers can seem difficult for some students. But, this Khan Academy video makes this process clear in a developmentally sound way. Students watch as 'Sal' adds the number 46 to 43. He references each number by its...
Curated OER
How Do You Put Whole Numbers in Order From Greatest to Least?
So you want to put some given values in order from greatest to least? The instructor starts out by drawing a place value chart. She then inserts all the numbers into the chart. This helps you visually see their value so you can compare...
Curated OER
How Do You Put Whole Numbers in Order From Least to Greatest?
So you want to put some given values in order from least to greatest? The instructor starts out by drawing a place value chart. She then inserts all the numbers into the chart. This helps you visually see their value so you can compare...
Krista King Math
Intermediate Value Theorem to Prove a Root in an Interval
Viewers os this short video learn how to prove that a root exists in a given interval without having to determine the actual value of the root. Applying the Intermediate Value Theorem is most helpful in this situation.
Virtual Nerd
How Do You Write a Whole Number Given in Words in Standard Form and in Expanded Form?
You are given a number that is written out in words and now you have to write it in numerical form, and you have to write it in expanded form. The teacher helps you identify the period values and the place values to write the words in...
Curated OER
How Do You Subtract Whole Numbers?
Line up your numbers! The instructor shows you how to line your numbers up by place value. Then step-by-step she subtracts each place value. She demonstrates how to borrow when the top value is less than the bottom value you are...
Corbett Maths
Lower and Upper Bounds
Teach young mathematicians to keep an eye on boundaries! Young scholars use a video lesson to explore the possible values of numbers rounded to varying place values. The instructor provides an explanation to several contextual problems...
Curated OER
How Do You Do Long Multiplication?
Multiplying multi-digit numbers without a calculator. First, make sure you align the numbers properly. It's not just about multiplying, but there's carrying numbers and adding numbers and placeholders. You can do it, just remember to...
Curated OER
Adding Three- and Four-Digit Numbers
Lauren demonstrates the importance of aligning numbers properly to add them. First she lines the numbers up incorrectly and gets an absurd answer when she adds them together. Then she shows how to carefully align the numbers according to...
Curated OER
How Do You Do Long Multiplication?
Multiplying multi-digit numbers without a calculator. First, make sure you align the numbers properly. It's not just about multiplying, there's carrying numbers and adding numbers and placeholders. You can do it, just remember to line up...
Learning Games Lab
Finding Your Place on the Scale (Logarithms)
Linear scales are the standard that most graphs and data use. Converting data to a logarithmic scale can be tricky, but a video presentation thoroughly describes the process. Using visual imagery and specific examples, the lesson...
Corbett Maths
Division by Decimals
Knowing how to divide whole numbers gives ample preparation for dividing decimals. Young mathematicians watch an educational video that reviews how to divide decimals. The method described is to use place value reasoning to rewrite the...
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