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How Plants Grow for Kids | Learn about photosynthesis and what plants need to grow strong Teacherflix 6 Views • 2 years ago

Did you know that plants require a lot of the same things you do to grow and survive? In How Plants Grow for Kids, you will learn about four of the main things plants need to grow. These "core four" elements are soil, sunlight, air, and water. What do each of these things do for plants? Let's find out!

Plants will find most of the nutrients they need in the soil. These nutrients include nitrogen, phosphorous, and potassium. Nitrogen is what causes the leaves of plants to be green. Phosphorous contributes to the overall health and strength of the plant and its root system. Potassium helps the plant fight off diseases. Soil also supports the plant and helps prevent it from falling over.

The next element is sunlight. The sun produces energy through the light that plants can use to make food. The leaves are the part of the plant that makes this process, photosynthesis, happen. Without this process, plants would not be able to survive. However, too much or too little sunlight can be harmful. Another important element is air. From the air, plants receive carbon dioxide, a component that, like sunlight, contributes to the process of photosynthesis. Carbon dioxide also allows plants to use the sun's energy to make its food and grow.

Finally, plants need water. Water is necessary for the plant to grow healthy and strong. The water a plant receives helps guide nutrients to the plant through its roots, stem, and leaves. It is possible for plants to receive too much water. Too much sunlight harms plants, and overwatering them can yield the same results. A couple other things plants need are temperature and space. Adequate temperatures ensure plants don't die out because of extreme hot or cold. And plants need enough room to grow into their full size. Overcrowding can cause disease or restrict plants from receiving enough air.

We hope you and your student(s) enjoyed learning about the factors that affect plants and their growth! If you want to learn even more, head over to our website and download one of our many free lesson plans about plants, full of activities, worksheets, and more!

https://learnbright.org/lesson....s/science/how-plants
https://learnbright.org/lesson....s/science/photosynth
https://learnbright.org/lesson....s/science/plant-and-
https://learnbright.org/lesson....s/science/plant-part

What you will learn in How Plants Grow for Kids:
0:00 General introduction to plants
0:44 What living things need to survive, be healthy, and grow
1:23 Core four: soil
2:09 Core four: sunlight
2:50 Core four: air
3:37 Core four: water
4:24 The necessity of temperature and space
5:16 Review of the facts

Thank you for watching and learning with us! We’re constantly releasing new content and videos, so click that “Subscribe” button and you’ll get notified.

Find and Follow Us Online:
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*Teachers and Parents! Did you know? In addition to these great videos, we have also created a library of high-quality and engaging lessons for your elementary aged student(s). Visit us, sign up for a free account, and instantly you'll have access to thousands of lesson plans, learning materials, teaching instructions, activities, and assignments that your kids will really enjoy! We hope to see you soon!

Browse our entire collection of Science lesson plans: https://learnbright.org/lessons/?filter_subject=science

#HowPlantsGrowForKids
#HowPlantsGrow
#Photosynthesis

But how does bitcoin actually work? Teacherflix 20 Views • 2 years ago

The math behind cryptocurrencies.
Help fund future projects: https://www.patreon.com/3blue1brown
An equally valuable form of support is to simply share some of the videos.
Special thanks to these supporters: http://3b1b.co/btc-thanks
This video was also funded with help from Protocol Labs: https://protocol.ai/join/

Some people have asked if this channel accepts contributions in cryptocurrency form. As a matter of fact, it does:
http://3b1b.co/crypto
ENS: 3b1b.eth

2^256 video: https://youtu.be/S9JGmA5_unY

Music by Vincent Rubinetti: https://soundcloud.com/vincerubinetti/heartbeat

Here are a few other resources I'd recommend:

Original Bitcoin paper: https://bitcoin.org/bitcoin.pdf

Block explorer: https://blockexplorer.com/

Blog post by Michael Nielsen: https://goo.gl/BW1RV3
(This is particularly good for understanding the details of what transactions look like, which is something this video did not cover)

Video by CuriousInventor: https://youtu.be/Lx9zgZCMqXE

Video by Anders Brownworth: https://youtu.be/_160oMzblY8

Ethereum white paper: https://goo.gl/XXZddT

Timestamps:

0:00 - Introduction
2:25 - Ledgers and digital signatures
7:21 - The ledger is the currency
10:06 - Decentralization
12:26 - Cryptographic hash functions
14:38 - Proof of work and blockchains
19:42 - Double spending
21:41 - Block times, halvenings, and transaction fees
24:40 - Thanks

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Animations are largely made using manim, a scrappy open-source python library. https://github.com/3b1b/manim

If you want to check it out, I feel compelled to warn you that it's not the most well-documented tool, and has many other quirks you might expect in a library someone wrote with only their own use in mind.

Music by Vincent Rubinetti.
Download the music on Bandcamp:
https://vincerubinetti.bandcam....p.com/album/the-musi

Stream the music on Spotify:
https://open.spotify.com/album..../1dVyjwS8FBqXhRunaG5

If you want to contribute translated subtitles or to help review those that have already been made by others and need approval, you can click the gear icon in the video and go to subtitles/cc, then "add subtitles/cc". I really appreciate those who do this, as it helps make the lessons accessible to more people.
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3blue1brown is a channel about animating math, in all senses of the word animate. And you know the drill with YouTube, if you want to stay posted on new videos, subscribe, and click the bell to receive notifications (if you're into that).

If you are new to this channel and want to see more, a good place to start is this playlist: http://3b1b.co/recommended

Various social media stuffs:
Website: https://www.3blue1brown.com
Twitter: https://twitter.com/3Blue1Brown
Patreon: https://patreon.com/3blue1brown
Facebook: https://www.facebook.com/3blue1brown
Reddit: https://www.reddit.com/r/3Blue1Brown

Multiply by 12 | Learn Multiplication | Multiply By Music | Jack Hartmann Teacherflix 10 Views • 2 years ago

This multiplication song for 12 gives the multiplication facts for the 12 times table. This Multiply by 12 song has cool original music that is very contemporary and age appropriate for 2nd through 5th graders. Also, this song goes through each table 1 through 12 three times to give your children a chance for lots of practice. This Multiply by 12 song also has a gradual learning structure.

First time: I sing the multiplication table I give the answer.

Second time: I say the table I delay the answer, so children have a chance to answer before me.

Third time: I completely omit the answer so children can answer on their own.

We take pride in saying that this is one of the best multiplication facts songs around.
This song on learning how to Multiply by 12 is a wonderful way for your children to learn and practice the multiplication tables.

One dozen roses, two dozen eggs
You've got to know how many that makes
To know quick how many inside
It's number 12 you multiply

12 x 1 is 12
12 x 2 is 24
12 x 3 is 36
12 x 4 is 48
12 x 5 is 60
12 x 6 is 72
12 x 7 is 84
12 x 8 is 96
12 x 9 is 108
12 x 10 is 120
12 x 11 is 132
12 x 12 is 144

One dozen roses, two dozen eggs
You've got to know how many that makes
To know quick how many inside
It's number 12 you multiply

Now try answering faster than me

12 x 1 is 12
12 x 2 is 24
12 x 3 is 36
12 x 4 is 48
12 x 5 is 60
12 x 6 is 72
12 x 7 is 84
12 x 8 is 96
12 x 9 is 108
12 x 10 is 120
12 x 11 is 132
12 x 12 is 144

Come on you can do it on your own

12 x 1 is ___
12 x 2 is ___
12 x 3 is ___
12 x 4 is ___
12 x 5 is ___
12 x 6 is ___
12 x 7 is ___
12 x 8 is ___
12 x 9 is ___
12 x 10 is ___
12 x 11 is ___
12 x 12 is ___

One dozen roses, two dozen eggs
You've got to know how many that makes
To know quick how many inside
It's number 12 you multiply

Jack Hartmann's website: http://www.jackhartmann.com
Remember to connect with Jack Hartmann on his Social Networks:
Facebook: https://www.facebook.com/hop2itmusic
Pinterest: https://www.pinterest.com/jackhartmann/
YouTube: https://www.youtube.com/user/JackHartmann
Twitter: https://twitter.com/Jack_Hartmann
Google +: https://plus.google.com/u/0/11....1246828015196865180/
You can find Jack Hartmann's Music on:
Jack Hartmann Website: http://www.jackhartmann.com
iTunes: https://itunes.apple.com/us/ar....tist/jack-hartmann/i
Amazon Mp3: http://www.amazon.com/s/ref=ntt_srch_drd_B00423GXF2?ie=UTF8&field-keywords=Jack%20Hartmann&index=digital-music&search-type=ss
Google Play: https://play.google.com/store/music/artist/Jack_Hartmann?id=Ax3xg7dhdt5nx4b47dnwxjnhhhy&hl=en
CD Baby: http://www.cdbaby.com/Artist/JackHartmann

The Man Who Killed Millions and Saved Billions Teacherflix 5 Views • 7 months ago

Fritz Haber is the scientist who arguably most transformed the world. Part of this video is sponsored by Wren. Offset your carbon footprint on Wren: https://www.wren.co/start/veritasium1. For the first 100 people who sign up, I will personally pay for the first month of your subscription!

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A huge thanks to Dan Charles for writing a fantastic biography of Fritz Haber, for taking the time to talk to us about it, and providing valuable feedback. This video would not be what it is without his contributions. http://site.danielcharles.us https://ve42.co/Charles

Thanks to Tom de Prinse from Explosions and Fire for helping us with the chemistry of explosives. If you like explosions and/or fire, you will love his channel. https://www.youtube.com/c/ExplosionsFire2

Thanks to Michael Kuiper of CSIRO for the animation of the composition of air - https://www.youtube.com/watch?v=j9JvX58aRfg

Special thanks to Sonya Pemberton, Karl Kruszelnicki, Mary Dobbie, Olivia McRae, and the patreon supporters for giving us feedback on the earlier version of this video.

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References:

The primary reference used is Vaclav Smil’s excellent book, Enriching The Earth –
Smil, V. (2004). Enriching the earth: Fritz Haber, Carl Bosch, and the transformation of world food production. MIT press. – https://ve42.co/Smil

Mastermind: The Rise and Fall of Fritz Haber, the Nobel Laureate Who Launched the Age of Chemical Warfare, by Dan Charles – https://ve42.co/Charles

Stoltzenberg, D. (2004). Fritz Haber: Chemist, Nobel Laureate, German, Jew. Chemical Heritage Foundation. – https://ve42.co/Stoltzenberg

Postgate, J. R. (1982). The fundamentals of nitrogen fixation. CUP Archive. – https://ve42.co/postgate

Miles, A. G. (1992). Biological nitrogen fixation. – https://ve42.co/Miles

Friedrich, B., & Hoffmann, D. (2017). Clara Immerwahr: A life in the shadow of Fritz Haber. In One Hundred Years of Chemical Warfare: Research, Deployment, Consequences(pp. 45-67). Springer, Cham. – https://ve42.co/Friedrich2017

Da Silva, G. (2020). What is ammonium nitrate, the chemical that exploded in Beirut. Sci Am, 5. – https://ve42.co/Silva

Rodrigues, P., & Micael, J. (2021). The importance of guano birds to the Inca Empire and the first conservation measures implemented by humans. – https://ve42.co/rodrigues

Allison, F. E. (1957). Nitrogen and soil fertility. Soil, the, 85-94. – https://ve42.co/Allison

Crookes, W. (1898). Address of the President before the British Association for the Advancement of Science, Bristol, 1898. Science, 8(200), 561-575. – https://ve42.co/Crookes

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Special thanks to Patreon supporters: RayJ Johnson, Brian Busbee, Jerome Barakos M.D., Amadeo Bee, Julian Lee, Inconcision, TTST, Balkrishna Heroor, Chris LaClair, Avi Yashchin, John H. Austin, Jr., OnlineBookClub.org, Matthew Gonzalez, Eric Sexton, john kiehl, Diffbot, Gnare, Dave Kircher, Burt Humburg, Blake Byers, Dumky, Evgeny Skvortsov, Meekay, Bill Linder, Paul Peijzel, Josh Hibschman, Timothy O’Brien, Mac Malkawi, Michael Schneider, jim buckmaster, Juan Benet, Ruslan Khroma, Robert Blum, Richard Sundvall, Lee Redden, Vincent, Stephen Wilcox, Marinus Kuivenhoven, Michael Krugman, Cy 'kkm' K'Nelson, Sam Lutfi, Ron Neal

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Written by Petr Lebedev, Derek Muller, Felicity Nelson and Kovi Rose
Edited by Trenton Oliver
Animation by Jakub Mistek, Fabio Albertelli, Ivy Tello, Alex Drakoulis, Nils Ramses Kullack, and Charlie Davies
SFX by Shaun Clifford
Filmed by Petr Lebedev, Derek Muller and Raquel Nuno
Photo of nitrogen deficiency in rice from https://ve42.co/rice
Additional video/photos supplied by Getty Images
Music from Epidemic Sound: https://ve42.co/music