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Pre-Algebra 03 - Decimal, Binary, Octal & Hexadecimal
Our modern decimal number system is base-10. Other number systems used in fields like computer engineering are base-2 (binary), base-8 (octal) and base-16 (hexadecimal).
Curated Video
Multiplying Multi-Digit Numbers Using the Area Model
In this video, students learn how to multiply multi-digit numbers using the area model. The video explains the concept of multiplication as repeated addition and introduces the idea of using arrays to represent multiplication sentences.
Curated Video
Using Simulation to Test the Fairness of a Coin
In this video, the teacher explains how to determine if a model is consistent with the results by performing a simulation with random numbers. The example used is flipping a coin to determine who washes the dishes, and the teacher...
Curated Video
Adding 10 or 100 Using Expanded Notation
In this video, students will learn how to quickly add 10 or 100 to any number using expanded notation. Understand the concept of place value and demonstrates how to write numbers in expanded notation. Through examples and practice...
Curated Video
Comparing Decimals Using a Number Line
In this video lesson, we explore the symbols used to compare numbers and emphasizes that longer decimal numbers are not necessarily larger. Through examples and visual representations on a number line, students practice comparing...
Curated Video
Determining Multiples of 4 and 7 Using Divisibility Rules
In this video, the teacher explains how to determine if a whole number is a multiple of 4 or 7 using divisibility rules. The teacher demonstrates the rule for divisibility by 4, which involves looking at the last two digits of the...
Curated Video
Determining Multiples of 2, 3, and 6 Using Divisibility Rules
In this video, the teacher explains how to determine if a whole number is a multiple of 2, 3, or 6 using divisibility rules. The teacher demonstrates how to apply the rules for each number and provides examples to illustrate the concept.
Curated Video
Adding Three-Digit Numbers Using Expanded Form
The video demonstrates how to add three-digit numbers without drawing pictures but by using expanded form. The host explains how to expand each number and add the values of the hundreds, tens, and ones separately. The process is shown...
Curated Video
Comparing and Ordering Numbers to the Millions Place
In this video lesson, students will understand that each digit represents a place value and that moving to the left increases the value by an order of 10. By comparing the digits from left to right, they will be able to determine which...
Curated Video
Naming Decimal Numbers through the Thousandths Place
In this video, students will learn how to name decimal numbers through the thousandths place by understanding the concept of place value. The video emphasizes the common mistake of assuming all decimals are read the same and reminds...
Curated Video
Understanding Place Value Charts and How They Work
This video explains the concept of place value and how different places in a place value chart are related. The video emphasizes the importance of considering the place value of each digit when writing numerals and highlights common...
Wonderscape
Understanding Value, Base 10 and Symbols for Comparing Numbers
In this video that meets Common Core 1st grade math standards, the teacher introduces the concept of base 10 and how it makes counting and representing numbers easier. The teacher demonstrates how to count using base 10 by showing a set...
Curated Video
Multiplying Whole Numbers and Decimals by Powers of 10
In this video, students learn how to multiply whole numbers and decimals by powers of 10 by understanding place value. The teacher explains the concept of exponents and shows examples of multiplying by powers of 10. Students are guided...
Curated Video
Multiplying Decimal Numbers by Powers of 10
This video explains how to multiply a decimal number by a power of 10 by understanding place value. It demonstrates that multiplying by 10 or 100 shifts the digits to the left, and the decimal point holds the digits in the correct place....
Curated Video
Multiplying by Powers of 10 and Patterns in Place Value
In this video, students learn how multiplying a number by a power of 10 increases its value. The video explains the relationship between place values and how each power of 10 increases the value of each digit by 10 times. It also...
Curated Video
US students throws pies at teachers on Pi Day
Students at a Detroit-area school celebrated pi by throwing a pie in the face of their favorite teacher.Tuesday is March 14, or 3-1-4, the first three digits of pi - 3.14. The infinitely long non-repeating number, which represents the...
Curated Video
A 16-month old girl in impoverished Myanmar was born with 12 fingers and 14 toes, and now her family is seeking a Guinness World Record.
HEADLINE: Girl with 12 fingers, 14 toes aims for a record
CAPTION: A 16-month old girl in impoverished Myanmar was born with 12 fingers and 14 toes, and now her family is seeking a Guinness World Record. (Feb. 15)
SLUG: Myanmar-Fingers...
AFP News Agency
CLEAN : Anti government protesters go on trial in Turkey
CLEAN : Anti government protesters go on trial in Turkey
Curated OER
What is a Repeating Decimal?
Pi is not a repeating decimal, although it goes on and on and on forever after the decimal. Why? Because nothing repeats. So what is a repeating decimal? How is a repeating decimal written? Can a fraction be a repeating decimal? Want to...
Virtual Nerd
What is Place Value for Whole Numbers?
Whole numbers are the natural numbers including zero. The instructor illustrates and explains place value. She draws a place value chart and then defines each term and what the numbers mean. She writes a number in standard form and then...
Curated OER
How Do You Find the Value of a Digit in a Whole Number?
The instructor illustrates place value by first drawing a place value chart. Then she inserts the numbers in question so she can find the value of certain digits. I think her chart really helps visually.
Virtual Nerd
What is Place Value?
The teacher names and explains place value. She starts at the ones, and moving left of the decimal, goes to a million. Then moving to the right of the decimal she names and explains tenths to thousandths. This is a terrific video to use...
Curated OER
What is Place Value for Whole Numbers?
Whole numbers are the natural numbers including zero. The instructor illustrates and explains place value. She draws a place value chart and then defines each term and what the numbers mean. She writes a number in standard form and then...
Virtual Nerd
Virtual Nerd: What Is Place Value?
This video tutorial introduces the term place value and shows some of the most seen place values. [6:47]