TED-Ed
TED-Ed: How big is a mole? (Not the animal, the other one.) - Daniel Dulek
The word "mole" suggests a small, furry burrowing animal to many. But in this lesson, we look at the concept of the mole in chemistry. Learn the incredible magnitude of the mole--and how something so big can help us calculate the tiniest...
Curated Video
Numbers in English
This English language learning video covers the basic use of numbers in everyday language. It introduces ordinal numbers, simple words, expressions, and tips.
Curated Video
Understanding Decimal Place Value and the Relationship Between Digits
In this lesson, students will learn about the relationship between digits in a number and how place value decreases 10 times with each shift to the right. Through the use of number lines, students will understand how to determine the...
Curated Video
Multiplying Fluently by Combining Known Facts
In this video, students learn how to multiply fluently by combining known facts. They are taught to break down numbers into smaller parts and use their knowledge of multiplication facts to solve tricky multiplication problems quickly.
Curated Video
Even and Odd Numbers: Determining by the Ones Place
This video lesson teaches students how to determine whether a number is even or odd by looking at the digit in the ones place. It explains the concept using visual examples and encourages students to pair objects to determine if they can...
Hip Hughes History
The Kennedy Assassination
Hiphughes lays out his top five questions about the JFK assassination. While not a conspiracy nut, the JFK assassination leaves a lot of room for doubt concerning the official Warren Commission story. These are simply questions, please...
Mr. Beat
Why Do Videos Go Viral?
The eight principles: #8 A video is more likely to go viral if it is deliberately marketed to the appropriate demographic. In other words, if ads are strategically placed to reach a lot of people guaranteed to already like the video, it...
Getty Images
Stop motion clock
Stop motion timelapse video of a clock. Black and white. Light on number six.
Getty Images
HD LOOP: Counting Down
HD1080p: Counting down from 9 to 0 in illuminated numbers. Loopable. Progressive scan. Isolated on a black background.
Getty Images
Timing TI
Close up dolly shot of ticking clock focusing on second-counting hand, at natural speed passing from 4 round to 8.
Getty Images
Dice: double sixes
Two dice tumbling onscreen, both ending up on six. The animation repeats in slow motion.