Curated Video
Proving Triangle Similarity Algebraically
In this video, the teacher explains how to prove the similarity of triangles algebraically using ratios of corresponding sides. The lesson begins by reviewing the concept of proportionality and then applies it to triangles. The teacher...
Curated Video
Using Parentheses to Write and Read Algebraic Expressions
In this video, the teacher explains how parentheses are used to write algebraic expressions and ensure clarity in their meaning. The teacher demonstrates how to write the expression "three less than a number, times twenty" using...
TED-Ed
TED-Ed: How taking a bath led to Archimedes' principle - Mark Salata
Stories of discovery and invention often begin with a problem that needs solving. Summoned by the king to investigate a suspicious goldsmith, the early Greek mathematician Archimedes stumbles on the principle that would make him famous.
Curated Video
Two-Step Word Problem Solving with Number Lines
The video is a tutorial on how to solve two-step word problems using a number line. The instructor provides examples and explains the importance of underlining important information and creating an equation to go with the word problem....
Curated Video
Adding Realistic and Exciting Details about Characters
In this lesson, students will learn how to make their writing more realistic and exciting by adding details about the characters. They will review the five steps of the writing process and focus on revising their work to make it better.
Curated Video
Factor Polynomials
A video entitled “Factor Polynomials” which models how to factor quadratic equations.
Curated Video
Associative Property of Multiplication
Apply the associative property of multiplication.
Khan Academy
How to Add Fractions that have Different Denominators, Fractions, Pre-Algebra
Your young mathematicians can solve this problem along with Sal. They will add 4/9 and 11/12 by finding a number that evenly divides both 9 and 12. Sal fully explains the process of finding a common denominator in an evident and...
Curated OER
Basic Math: Lesson 6 - #8 - Division of Fractions
Dividing fractions! This clip begins with fraction circles described as parts of a whole, shows the actual fractions that represent the images, then defines what reciprocal means. Example problems employing the use of a reciprocal show...
Loyola University Chicago
Math Flix: Solving Wordsworth Puzzles
This QuickTime movie provides an opportunity to practice solving Wordsworth Puzzles using Algebra. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept.
Loyola University Chicago
Math Flix: Patterns the King's Chessboard 1
This part 1 of a QuickTime movie extends the concept of doubling based on the book "The King's Chessboard". The doubled numbers are also shown using exponents. The data is organized in a table. As you watch and listen to the teacher and...
Loyola University Chicago
Math Flix: Patterns the King's Chessboard 3 Activity
This QuickTime movie extends the concept of doubling based on the book "The King's Chessboard" using an activity sheet. Just click below the video on the hyperlink "The King's Chessboard. Some of the data is organize in a table. See if...
Loyola University Chicago
Math Flix: Patterns: Exponential Relationships 2
This part 2 of a QuickTime movie describes an exponential relationship in a real world setting and the stunning growth over time. The data is organized in a table. As you watch and listen to the teacher and students interact it helps...
Loyola University Chicago
Math Flix: Number Patterns 1
This QuickTime movie provides an opportunity to identify number patterns in a number sequence. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept.
Loyola University Chicago
Math Flix: Patterns: Exponential Relationships 1
This part 1 of a QuickTime movie compares both exponential and arithmetic relationships in a real world setting. The data for both is organize in a table. As you watch and listen to the teacher and students interact it helps clarify the...
Loyola University Chicago
Math Flix: Patterns the King's Chessboard 2
This part 2 of a QuickTime movie extends the concept of doubling based on the book "The King's Chessboard". The data is organize in a table that also shows the total each day from all the previous days. As you watch and listen to the...
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