Introduction to #GeoGebra (Webinar 1):
Tour the entire platform.
Create, edit, share constructions.
Learn today: Use in class tomorrow!

For GeoGebra resources (shared in video):
tinyurl.com/ggbres

Host: Tim Brzezinski (www.youtube.com/c/TimBrzezinski)

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I wrote the lyrics to this one and put it to the tune of a familiar kids' song. I think it turned out well!

If you would like for me to come up with another song to help learn something grammatical or remember something you're studying, let me know!

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*Click CC to turn on subtitles in English to follow along*

See original version (without pop ups) here:
https://www.youtube.com/watch?v=xrZtfIqI79g

See more at https://www.underwatermath.com. Underwater Math provides engaging learning solutions for students. This instructional video supports solving one step addition and subtraction problems. Florida Math Standard 2.OA.1, 1a, 2

Subtraction lesson for K-12

Making an interactive and moving demonstration of circle theorems helps reinforce what the situation is. You can do it very quickly and easily in GeoGebra. This one is for the fact that the angle off a chord anywhere in the segment is the same (this is a good starting point for proving many other circle theorems).
ALL CIRCLE THEOREMS LIVE HERE: https://www.geogebra.org/m/xkvz2EfF

Today we transition between units on language and aesthetics with a discussion of nonexistent and imaginary objects. Is it possible to make true assertions about things that aren’t real? We’ll explore Meinong’s Jungle and the concept of a universe of discourse.

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Harry Potter, Copyright ©Warner Brothers
Hogwarts photo by Rob Young via WikiMedia Commons, CC BY 2.0 https://commons.wikimedia.org/....wiki/File:Hogwarts_C

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Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

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Resources from this webinar: https://www.geogebra.org/m/uygyuqvf

Initial survey: https://www.geogebra.org/classroom/gzmrm7fm
End survey: https://www.geogebra.org/classroom/fxqetqty

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Let's chat for 30 minutes about GeoGebra and how easy it is to get you started for the school year when teaching math.

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A #GeoGebra Book is a collection of one or more GeoGebra activities. As a teacher, you can create a GeoGebra book to create a collection of tasks for students to complete in a GeoGebra Class. In this demo, teacher view is shown on left. Student view is shown on right. More info: https://www.geogebra.org/m/hnc....rgruu#material/auue6

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Tanyakan pertanyaan aneh anda disini! NGGA ada pertanyaan yang bodoh! 'Kok Bisa' ngga cuma sekedar mencoba menjawab pertanyaan-pertanyaan yang terlihat bodoh, aneh dan dungu disini, tapi juga mencoba menumbuhkan rasa keingintahuan anda terhadap segala hal di dunia ini. Jadi tunggu apalagi? Ayo subscribe, let's watch the videos and go curiosity!

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A: Tiap hari Rabu. Tapi kadang-kadang ada video yang butuh waktu pembuatan lebih lama. So, stay tuned!

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Q: MIN, KENAPA DI VIDEONYA ADA BAKSONYA TERUS!?
A: Bakso is inspiration *wink

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References:
NASA. (Tanpa tahun). Mars Exploration Program. Dikutip dari [NASA Mars Exploration](https://mars.nasa.gov/?msclkid....=bc179a69b03c11ecb7a

*Titan - In Depth*. (2021, February 24). NASA Solar System Exploration. [https://solarsystem.nasa.gov/m....oons/saturn-moons/ti

NASA. (n.d.). *Mars Facts*. NASA Mars Exploration. [https://mars.nasa.gov/all-abou....t-mars/facts/?msclki

*In Depth | Mars –*. (2021, July 8). NASA Solar System Exploration.

[https://solarsystem.nasa.gov/p....lanets/mars/in-depth

[https://www.nationalgeographic.....com/science/article

[https://www.space.com/24701-ho....w-long-does-it-take-

[https://www.theatlantic.com/sc....ience/archive/2019/0

[https://www.forbes.com/sites/j....amiecartereurope/202
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Chain Reaction in Nuclear Fission: When slow neutrons are bombarded on uranium, each uranium nucleus is broken in to two almost equal parts and along with it enormous energy and two or three trash neutrons are emitted. If the conditions are favorable, these neutrons take part in the fission.This leads to a chain of nuclear fissions which continues till the whole of the Uranium is consumed. Thus the energy produced keep on multiplying.We have seen that about 200 MeV MeV- mega electron volts of energy is released due to fission of 1 Uranium nucleus. In this chain reaction, the number of nuclei undergoing fission increases very rapidly, hence the energy produced acquires an enormous amount very soon."The chain reaction is a series of nuclear fissions in which the neutrons produced in each fission cause additional fissions."This chain reaction liberate tremendous amount of energy within short interval of time. But sustaining a self--propagating chain reaction is not easy in practice, because the progressive chain reaction is inhibited due to the following reasons.A Ordinary uranium consists of three isotopes 92U238 92 Uranium 238, 92U236 92 Uranium 236 and 92U235 92 Uranium 235. The major part of ordinary uranium is the isotope 92U238 92 Uranium 238 the remaining are rare. Now, 92U238 92 Uranium 238 can be fissioned only with fast neutrons 1 MeV while 92U235 can be fissioned with slow as well as slow and fast neutrons. Neutrons having energy less than 1 MeV are absorbed by 92U238 through these low energy neutrons can take part is the fission of 92U235 but the probability of their absorption by U238 is much more. Thus the fresh neutrons released in the fission of ordinary uranium being absorbed by U238 are not able continue the chain reaction. This difficulty can be removed in the following two ways: The lighter isotope U235 can be separated from the ordinary uranium by diffusion method. The fission of U235 is now possible by neutrons of any energy high or low. So chain reaction continuous as shows in above.The second way is to slow down the neutrons by any method. So that their energy remains 0.03 eV This can be achieved with help of moderators, which reduce the speed of neutrons very rapidly. Graphite and heavy water are good moderators.The second difficulty in maintaining the chain reaction is that the fast neutrons released by the fission of U235 travel a distance of about 10 centimeter in the substance before they are slow down and fission other nuclei.Therefore, to continue the chain--reaction, the size of the fissionable substance should be bigger than a certain critical size.

K12’s 2025 Cook-Off is underway! Last week, we met Caleb; now let’s see what Isla has in store! See what inspires her to cook and how she reacts to each culinary card.
Episode 3 will be live next week, so subscribe if you don’t want to miss it. Looking for a sneak peek? Make sure to watch until the end. 🤫

Once you’ve seen all the finalists, go to https://enrichment.K12.com/cookoff/. Public voting begins July 23 and ends July 29.

Fun competitions like this are only one of the many perks of K12-powered learning! Enroll today to add some flexible fun to your education.

Do you remember these! The nostalgia I had making this was unreal