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Solve Systems Algebraically
You will solve for the point of intersection of two linear equation problems with two variables.
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Dividing Rational Numbers
"Dividing Rational Numbers” will review the rules and procedures for dividing rational numbers.
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Ratios and Unit Rates
“Ratios and Unit Rates” will help you understand the difference between a ratio and a unit rate.
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Regrouping and Carrying
The video “Regrouping and Carrying” explains how to use regrouping and carrying as part of the standard algorithm for adding two- and three-digit numbers.
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Affecting Change in Your Community
Affecting Change in Your Community examines the responsibilities of citizens by evaluating ways to assist government as they address problems that directly affect communities.
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Swept Under the Cosmological Rug
Princeton University physicist Paul Steinhardt relates how many top cosmologists simply ignore the problems with cosmic inflation.
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Measured Desperation
Physicist Paul Steinhardt, Princeton University, describes how many practicing scientists confidently assume that the unsolved problems of a theory will eventually be rectified rather than embracing the uncomfortable prospect of starting...
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Inflationary Concerns #2 - The Initial Conditions Problem
Cosmologist Paul Steinhardt (Princeton) describes the so-called "initial conditions problem" that makes cosmic inflation very hard to start.
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Inflationary Concerns #1 - Fine-tuning
Physicist and early pioneer of cosmic inflation Paul Steinhardt (Princeton) describes the fine-tuning problem associated with cosmic inflation.
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Improving Upon Greatness
Award-winning violinmmaker and acoustician Joseph Curtin describes how we might construct a better violin by combining aesthetics and practicality.
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99% Perspiration
Penn physicist Justin Khoury describes how, while many believe that becoming a professional scientist or mathematician is all a question of "natural talent", in his view the most significant attributes for success are passion and...
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Measuring Intelligence
Neuroscientist John Duncan (Cambridge) describes some of the tests associated with Charles Spearman's mysterious "g factor."
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Turning the Universe Upside Down
Nobel Laureate Roger Penrose (Oxford) tells us why he is sceptical of the inflationary theory of cosmology.
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The Big Bounce?
Princeton University physicist Paul Steinhardt describes how we might get beyond the intellectual dead-end that the theory of cosmic inflation seems to have led us to.
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Octaves and Harmonics
Nobel laureate in Physics David Politzer (Caltech) uses a banjo to demonstrate how octaves and harmonics arise from vibrating strings.
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No Explanation
Nobel Laureate Roger Penrose, University of Oxford, describes why he believes that inflationary cosmology doesn't explain the mystery of why the universe began in such an unlikely, very smooth state, arguing that had it started out...
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Engineers: Trial and Improvement
“Engineers: Trial and Improvement” discusses the steps of the engineering design process.
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Informational: Problem/Solution
“Informational: Problem/Solution” video lesson explores informational texts, focusing on the problem and solution structure and explaining how to identify problems and solutions in texts.
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What's Your Problem?
A video entitled “What’s Your Problem?” which discusses how a character in a story tried different solutions to solve his problem.
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Adding Large Numbers - Multi-Digit Addition
In this video, we'll learn how to solve multi-digit addition problems using the standard algorithm addition method. This technique is commonly used in 4th and 5th-grade math classes and is essential for adding large numbers quickly and...
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Multiplying Whole Numbers By Fractions Using Models
Learn how to multiply whole numbers by fractions using models in this fun and educational video from Doodles and Digits. Our visual approach makes math easy and enjoyable for everyone! Using models, we'll break down the process and show...
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Carrying When Adding Large Numbers | Multi-digit Addition
In this video, we'll explore the concept of carrying numbers in addition and regrouping. This is a crucial math skill for students in 2nd, 3rd, and 4th grades as it helps them add larger numbers with ease and accuracy. Want the addition...
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Multiplying a Fraction By a Whole Number: A Step-by-Step Guide for 3rd, 4th, and 5th Grade
Welcome to Doodles and Digits, the perfect place to learn math in a fun and interactive way! In this video, we'll show 3rd, 4th, and 5th-grade students how to multiply a fraction by a whole number using a step-by-step approach. We will...
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What is A.I.? | The Artificial Intelligence Song For Kids | KLT
Artificial Intelligence is here to stay, let's learn about it! The lyrics, music, and visuals for this song were all created by A.I. (with human help!!).