TED-Ed
What You Might Not Know About the Declaration of Independence
Did you know that the Declaration of Independence was signed on July 2, 1776? Did you know that five men, not just Thomas Jefferson, are credited with writing the Declaration? Did you know that references to slavery were excised from the...
TED-Ed
Ugly History: Japanese American Incarceration Camps
When Aki Kurose was 16 years old, her family was forced to relocate from their home in Seattle with other Japanese Americans. The government feared that despite their loyalty to the United States, they were operating on behalf of...
Texas Instruments
TI-Nspire™
We landed on the moon with less computing capabilities than you can find in this app! Here is a multiple function calculator that takes all the power you get from a handheld and adds the wonderful large screen that only a tablet can...
Paul Hudson
SPQR Latin Dictionary and Reader
Searching for an incredibly thorough Latin app? Look no further! Latin learners will be quite satisfied with the collection of texts, three dictionaries, customizable flashcards, assessment options, and other features that are right at...
Curated OER
Introduction to Ratios (new HD version)
Sal defines ratios. Then he shows how to write ratios three different ways. This concept is then demonstrated with four examples for finding quantities by using ratios.
Code.org
Star Wars: Building a Galaxy with Code
Welcome to the code side. The interactive lesson introduces coding in a game format with familiar characters. Young computer experts learn to develop code to control the interaction of the characters in the game. The activity ends with...
Khan Academy
Natural Selection and the Owl Butterfly
The lecturer describes how specific characteristics develop. In this case, he discusses eye marking. The impact of environmental factors significantly influences the likelihood of successful reproduction, as favorable genes are more...
Khan Academy
Example: Adding Two Digit Numbers (No Carrying)
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...
Khan Academy
Writing a Number in Standard Form, Arithmetic Properties, Pre-Algebra
Viewing this Khan Academy video helps with grasping the concept of place value. Learners write the word six hundred forty-five million, five hundred eight-four thousand, four hundred sixty-two in standard form, using multiplication as a...
Khan Academy
Example 1: Multiplying a Binomial by a Binomial, Algebra I
There are particular ways to multiply binomials. One could use the FOIL method or employ the distributive property. Sal walks through each step of the FOIL method and then shows that using distribution results in the same answer. This is...
Khan Academy
Rounding Whole Numbers 2, Arithmetic Properties, Pre-Algebra
This is the second in a series of three Khan Academy videos on rounding whole numbers. Students watch Sal Khan round the number 423,275 to the nearest thousand by looking at the number in the hundreds place. If it is five or higher, you...
Khan Academy
Adding Fractions with Like Denominators, Fractions, Pre-Algebra
Show your students this presentation to help them understand how to add fractions with like denominators. Sal adds 3/15 to 7/15 and then simplifies his answer. He uses drawings and multiple colors to show the actual process.
Khan Academy
Dividing Mixed Numbers, Fractions, Pre-Algebra
Before Sal can divide a mixed number, he has to rewrite it as an improper fraction. He explains that dividing a fraction is the same as multiplying it by its reciprocal and that you can "cancel out" numbers to make multiplying easier.
Khan Academy
Dividing Polynomials 1, Polynomial and Rational Functions, Algebra II
Divide two polynomial expressions by writing the problem as a fraction or as long division. Sal shows how to use long division to divide polynomials. A solid understanding of polynomial operations is necessary to grasp this video.
Khan Academy
Multiplying Fractions and Whole Numbers: Mixed Number Answer, Pre-Algebra
Here is a great video explaining multiplying a fraction by a whole number. Sal shows students how to put a whole number over 1 to multiply it by a fraction. He simplifies his answer and writes it as a mixed number.
Khan Academy
Rounding Whole Numbers 3, Arithmetic Properties, Pre-Algebra
Sal Khan completes the three-part rounding series with this Khan Academy video on rounding to the nearest 10. He references the actions taken in video two, so students would be best served if all three videos were shown in sequence.
Khan Academy
Rounding Whole Numbers Example 1, Arithmetic Properties, Pre-Algebra
Rounding is an essential skill that must be used throughout the study of mathematics. This Khan Academy video is the first in a series of three. It shows how to round the number 24,259 to the nearest hundred, using a number line.
Khan Academy
Example 4: Adding and Subtracting Polynomials, Algebra Basics
Adding two polynomials begins with simplifying when possible. Sal demonstrates the process he uses to combine like terms and explains why the process works. This video would be great for those who need a quick refresher.
Khan Academy
Polynomial Divided by Monomial, Polynomial and Rational Functions, Algebra I
Let's think about how a person could simplify an expression where a polynomial is divided by a monomial. Sal shares three different modes he could use to simplify, then uses each way to solve the same problem.
Khan Academy
Simplifying Rational Expressions (Old Video)
Here is a quick look at how one could simplify a monomial expression involving division. Sal works on a problem and briefly explains his process. Great as a concept review.
Khan Academy
Multiplying in Scientific Notation (Example), Pre-Algebra
Apply the concept of scientific notation to a word problem involving the rate of speed. Sal explains how to express the answer using scientific notation.
Khan Academy
Finding the Greatest Common Factor of Two Monomials, Algebra I
Sal explains that the most significant common factor of any number is the largest number divisible into both monomials and not necessarily the number with the most significant value. He breaks down two numbers into their prime factors as...
Khan Academy
Example 1: Factoring a Difference of Squares with Two Variables, Algebra II
Practice is an important learning tool. This practice problem allows students to apply their know-how to factoring a binomial with a difference of squares. Sal explains his process briefly, making this video suitable for those already...
Khan Academy
Factoring Sum of Cubes, Polynomial and Rational Functions, Algebra II
Here is a special form of a sum of cubes problem, where students use algebraic multiplication to rewrite each term in expanded form. Sal gives an example before solving the problem to show the process that he will use to determine the...
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