SciShow
Stem Cells
Hank gives you the facts on stem cells - what they are, what they're good for, where they come from, and how they're used in medicine.
Brian McLogan
ACT SAT Prep How to determine the color in a particular sequence
ACT SAT Prep How to determine the color in a particular sequence
Mr. R.'s Songs for Teaching
Math Word Problems Story: The Number Thief 3 (3rd-5th grade)
A fun story full of 3rd-5th grade math challenges! Answers: Chapter 1: 1. 3 lemons plus 3 x 4 (or 12) lemons= 15 lemons 2. If 3 lemons grow, and 1 falls off, there are 2 new lemons each day. After 33 days, there will be 66 lemons. 3. 170...
Curated Video
JavaScript Mastery from Zero to Hero - Prepare for Coding Interviews - How to Find the Longest Word in a String
In this video, you will learn how to find the longest word in a given string using JavaScript. The video covers the step-by-step process of solving this problem, including how to split the string into an array of words, looping through...
Maddie Moate
Avengers Campus and Star Wars Galaxy's Edge! | Disneyland and California Adventure | Maddie Moate
Greg and I were visiting LA for work last Christmas but we couldn't resist a quick day in the Disney parks! I hope you enjoy exploring Disney's California Adventure and Disneyland as much as we did! Let me know in the comments what your...
Curated Video
Converting Units of Measurement
In this video, the teacher explains how to approach a real-life word problem that involves converting units of measurement. They use examples of converting pounds to ounces and vice versa. Then, they apply this knowledge to solve a...
Brian McLogan
Tutorial - Learn how to sketch a best fit line from a scatter plot
In this video playlist I show you how to solve different math problems for Algebra, Geometry, Algebra 2 and Pre-Calculus. The video will provide you with math help using step by step instruction. Math help tutorials is just what you need...
Brian McLogan
Simplifying an imaginary number to a higher power
In this video playlist I show you how to solve different math problems for Algebra, Geometry, Algebra 2 and Pre-Calculus. The video will provide you with math help using step by step instruction. Math help tutorials is just what you need...
Brian McLogan
What is a perfect square trinomial
In this video playlist I show you how to solve different math problems for Algebra, Geometry, Algebra 2 and Pre-Calculus. The video will provide you with math help using step by step instruction. Math help tutorials is just what you need...
Brian McLogan
How to determine the product of two rational expressions
In this video playlist I show you how to solve different math problems for Algebra, Geometry, Algebra 2 and Pre-Calculus. The video will provide you with math help using step by step instruction. Math help tutorials is just what you need...
Curated Video
Learning Akka (Video 37)
Akka helps you to build scalable, resilient, and fault-tolerant distributed systems that can provide outstanding performance on local machines as well as over remote networks. Employing the actor model, it is possible to leverage these...
TED Talks
Bruce Schneier: The security mirage
The feeling of security and the reality of security don't always match, says computer-security expert Bruce Schneier. In his talk, he explains why we spend billions addressing news story risks, like the "security theater" now playing at...
Curated Video
Mastering Swift 2 Programming (Video 5)
Swift 2 is a multi-paradigm programming language that has expressive features familiar to modern functional languages, and does not forget the object-oriented features of Objective-C. Things that took a block of code in Objective-C are...
Big Think
Fairness is a universal value. So why all this inequity? | Dr. Monica Sharma
Are we trying to solve too many problem with technological solutions? Trained as a physician and epidemiologist, Dr. Monica Sharma worked for the United Nations from 1988 to 2010. As director of Leadership and Capacity Development at the...
NativLang
Solving your way through languages & codes: the International Linguistics Olympiad
How good are you at solving puzzles? Learning languages? Cracking codes? Test yourself as you puzzle out the tricky problems these linguists and mathematicians have put together. Stop memorizing words, symbols and answers, and start...
Curated Video
Can You Solve This Crazy Equation? Ramanujan's Radical Brain Teaser
In 1911, Srinivasa Ramanujan posed this problem involving an infinite nested radical (a never-ending expression that has square roots inside of square roots). Can you figure out how to simplify the equation? The video presents an...
Curated Video
Are Shakespeare's Plays Encoded within Pi?
A follow-up, with examples of numbers that are infinite and non-repeating but don't contain all combinations of digits: http://youtu.be/8PUJvAlD64k Happy Pi Day! Also see: Pi is (still) Wrong: http://youtu.be/jG7vhMMXagQ Pi in Binary...
Educreations
Half Life Problems
Does a radioactive cat have 18 half-lives? An understanding of half-life is important in both chemistry and biology, so start your young scientists off the right way — with the good foundation provided by a video that begins with a graph...
Curated OER
How Do You Solve a Word Problem Using an Exponential Function?
In six days Tina gets exponentially better at the number of times she can jump rope. Let's create an equation and see how many times Tina can jump rope on the sixth day. First identify the variables. Next make a table, then plug in the...
Khan Academy
SAT Prep: Test 2 Section 6 Part 6
The most valuable part of this video isn't math-related (even though the math strategies are quite helpful); it's the way Sal replaces part of a problem that confuses him with easy-to-manipulate variable letters. Students who get hung up...
Khan Academy
Equations of Sequence Patterns, Sequences, Series and Induction, Precalculus
This video shows an example of writing an algebraic equation for the pattern of blocks that grows at each iteration. Sal shows how to find the pattern by looking at the number of iterations and blocks. He then continues this example by...
Khan Academy
SAT Prep: Test 6 Section 3 Part 3
Continuing problem 7 from the previous video, Sal takes students through what he describes as "a common SAT problem" involving geometric lines and figures. Additional problems deal with sequences, cross-multiplication, and measuring...
Khan Academy
SAT Prep: Test 4 Section 2 Part 3
Continuing his theme of solving problems in a timely and correct manner, Sal teaches students that most problems on the SAT are designed to be solved in less than 30 seconds (though he does state that they are given over a minute for...