In standard use, the S-matrix can be calculated if you understand the forces in the interaction region - for example, in the nucleus of an atom. But what if you don’t know those internal interaction forces? Heisenberg sought a way to...

This video recounts a lecture by Richard Feynman giving an elementary demonstration of why planets orbit in ellipses. See the excellent book by Judith and David Goodstein, "Feynman's lost lecture”, for the full story behind this...

When you’re learning about science for the first time, it can be easier to break things down into a simpler form, and you can end up with a few misconceptions about the world. But sometimes this is the first step to understanding that...

Here's something to think about the next time you clean your windshield.

More than a century after first emerging into the fogbound, gaslit streets of Victorian London, Sherlock Holmes is universally recognizable. And yet many of his most recognizable features don't appear in Arthur Conan Doyle's original...

This video introduces and practices Near Doubles facts. Using what we know about doubles helps us solve facts that are near doubles facts. This is perfect for kindergarten, 1st grade, 2nd grade, and early learners, this video covers...

Explore the nuances of the German education system. Though not compulsory, kindergartens provide the first entry into German education. Children then attend the Grund Schule elementary school, which aims to teach basic skills along with...

This video introduces and practices Doubles facts.



This is perfect for kindergarten, 1st grade, 2nd grade, and early learners, this video covers doubles math facts practice. Whether you're teaching in the classroom or at home,...

This video introduces and practices Counting On facts.



This is perfect for kindergarten, 1st grade, 2nd grade, and early learners. This video covers counting on math facts practice. Whether you're teaching in the classroom or...

Social Emotional Learning My Well-Being_ Adjusting to a New School V1-0003

This video discusses the challenges and importance of transitioning from middle school to high school for teenagers. It emphasizes the significant changes...

Howcast - Learn about childhood epilepsy from Steve Wolf, MD and Patty McGoldrick, NP in this Howcast video.

Tom Thomas wants to talk with his friend through the computer but doesn't have a microphone. Simka and Nolik show him how to use his headphones as a microphone too.

Simka tries to convince Nolik that the terrible sound they hear inside of Tom Thomas’ broken computer is a horrible "Fixie-eater".

Tom Thomas plays a computer racing game against Johnny over the Internet with Simka and Nolik cheering him on. Tom Thomas finishes the last level and wins. Hooray! Suddenly, a banner appears on the screen with the promise of a super...

Fire and Nolik think they make the coolest team on the whole planet! Working together they are able to escape Chewsocka’s pursuit. They decide they should do everything together and never fight. When they arrive at Fixie School Grandpus...

While playing a game on his phone, Tom Thomas eats an open-faced sandwich. When Nolik reminds him that his mom said he shouldn’t eat while playing computer games, Tom Thomas gets flustered and drops the sandwich. It lands on the floor...

It’s time for the school’s annual New Year’s Masquerade and Tom Thomas wonders what costume he should wear. Nolik suggests he should go as a Fixie! Tom Thomas makes a blue Fixie costume that looks like Nolik, but as Fire, Digit, Verda...

Tom Thomas’ mom borrows a window cleaning robot from a neighbor and would like to get one for her own family. However, Tom Thomas’ dad doesn’t want to spend the money and claims that he can do an excellent job of cleaning the windows...

Tom Thomas pets Chewsocka explaining to the Fixies that his dog is not only his pet, but also his friend. Nolik say that he also has a pet – a little spider named Buggy. Nolik and Simka introduce Buggy to Tom Thomas. Tom Thomas shows the...

Tom Thomas feasts his eyes on a chocolate ball. Nolik really want to know what toy is inside the candy, but Tom Thomas asks him to wait till the next morning when they can open it together. Tom Thomas goes to sleep but Nolik’s curiosity...

Professor Eugenius is getting ready to go to a ceremony where he will receive the “Genius of the Year” award. Nolik and Toola jokingly ask him to say greetings to the Fixies during the TV broadcast of the awards, but Simka stops them: if...

Tom Thomas plays an evil dragon who has trapped Simka, the princess, inside a castle he has made from his new construction set. Nolik plays the brave knight who must save her. But playtime gets serious for Nolik when Chewsocka sneaks...

Nolik thinks that the birthday card Tom Thomas received from Katya has a secret code on it. He learns that the strange markings are actually musical notes to a famous song.

Nolik tries to make a movie of Fire playing basketball with Toola and Verda cheering him on, but he is unable to capture all of the action at one time. Simka teaches him how different shots can be edited together to feature the different...