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Library of 3383 accessible STEM media resources.
Showing resources 81 to 95 of 95
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An early exploration (2015) into how to make a sim accessible has taken place for Capacitor Lab Basics. The sim is keyboard navigable with some auditory descriptions when using 'Forms' mode with a screen reader. We are working on updating the content and the interactions, so that the simulation can be accessed by a screen reader in any mode. This prototype has been tested with NVDA and Firefox.
(Source: PhET Interactive Simulations)
Climb aboard the Cyclops, a microscopic research vessel, and investigate an amazing hidden world on which all living things depend. The Cyclops houses a team of scientists known as the Micronauts and guides them through their discoveries of biological classification, diversity, and ecology. In this episode, the Cyclops crashes into the bottom of the pond and discovers an ooze populated by bacteria. After gathering some, the Micronauts begin to investigate the chemical method the bacteria uses to decompose organic material. In the end, the bacterial also helps the crew escape the bottom of the pond so they can continue to explore. Part 5 of the Microscopic Monsters Series.
(Source: DCMP)
In some parts of the world, there is an intimate connection between the infectious parasitic disease "malaria" and the genetic disease "sickle-cell anemia." A keenly observant young man named Tony Allison, working in East Africa in the 1950s, first noticed the connection and assembled the pieces of the puzzle. His story stands as the first and one of the best understood examples of natural selection, where the selective agent, adaptive mutation, and molecule involved are known--and this is in humans to boot. The protection against malaria by the sickle-cell mutation shows how evolution does not necessarily result in the best solution imaginable but proceeds by whatever means are available.
The University of Washington is advancing research into deep brain stimulation, which is used to treat people with essential tremor, Parkinson's disease, and other conditions. At the Center for Neurotechnology, a team is designing and testing upgrades for devices to make them smarter and less intrusive. Along with enhanced brain sensors, new control algorithms, and machine-learning techniques to improve device performance, the team is ensuring the design meets the day-to-day usability needs of patients. Part of the "Science Nation" series.
Moko is an explorer. As he travels the world continent by continent, he makes many friends and discovers many natural phenomena which sometimes delight him, and other times scare him. Each animated episode recounts an adventure and takes an "original story" approach to explaining these natural phenomena. In this episode, Moko is enjoying the seashore on the beach when Mei-Lei comes to get him to go fishing. They sail out into the sea and in the distance Moko sees what looks like a hill. Mei-Lei tells him that is actually a giant wave! All of a sudden, the tsunami lifts their boat high into the air and propels it forward. The wave crashes down and drops their boat right at the entrance to the village. Moko believes that they were kept safe because he knew to trust the ocean.
Can damage to coral reefs be repaired? Two researchers are looking for solutions to this question. Dr. Steve Palumbi conducts research on the corals around Ofu Island in American Samoa. He is trying to determine why these native corals can withstand ocean temperatures that, in other coral species, would lead to coral bleaching. Along with graduate student Megan Morikawa, Palumbi is testing whether these heat-resistant corals can be transplanted to reefs that have been damaged or destroyed.
Teachers often say to students, “Put your thinking caps on,” and one day, students might just do that for real. Vanderbilt University psychologist Geoffrey Woodman says that’s because scientists are being equipped with more and more tools they can use to better understand the brain, and now, they can even eavesdrop on individual neurons. Initial support from the National Science Foundation (NSF) allowed Woodman and his team at the Vanderbilt University Visual Cognitive Neuroscience Laboratory to study memory and perception. Then, the researchers tested their theory that electrical stimulation of the medial frontal cortex can boost learning and improve decision-making. Part of the National Science Foundation Series “Science Nation.”
A research team has found that sweat is better than saliva and tears for noninvasive testing because it provides information much the same as blood. The team has developed Band-Aid-like sensors to collect health information from sweat. Other segments include the evidence that temperature determines sex for some animals, new methods for delaying ice and frost, and a historic discovery of 500 million-year-old fossils. Part of the "4 Awesome Discoveries You Probably Didn't Hear About This Week" series.
With support from the National Science Foundation, biomedical engineer Bin He and his team at the University of Minnesota have created a brain-computer interface with the goal of helping people with disabilities, such as paralysis, regain the ability to do everyday tasks. Currently, they’re testing out their system using a flying object known as a Quadcopter, which is controlled with someone’s thoughts. Part of the National Science Foundation Series “Science Nation.”
What happens in your brain when you get lost or forget something? Johns Hopkins University Neuroscientist Amy Shelton believes she can find the answer. With funding from the National Science Foundation, she’s testing human spatial recognition. Study subjects learn and recall their way around a virtual maze while an MRI scans their brains. By analyzing MRI images of blood flow in the human, Shelton can get a picture of how the brain learns and recalls the spatial world outside the body. By understanding those processes, she believes she can develop techniques that will help improve human memory.
An early exploration (2015) into how to make a sim accessible has taken place for Forces and Motion Basics. It has working keyboard navigation and auditory descriptions for the 'Net Force' screen when the screen reader is in 'Forms' mode. We are working on updating the content so that it can be read by the screen reader in any mode. Notes for the main interaction: Press 'Enter' or 'Spacebar' to enter a group of pullers. Once in the group, use 'Arrow' keys to choose which puller you wish to select. Press 'Enter' or 'Spacebar' to select puller and move to knot selection. Use 'Arrow' keys to choose between different knots. Press 'Escape' to leave a group of pullers or knots, 'Tab' to leave group and go to next element. This prototype has been tested with NVDA and Firefox.
In 2008, NASCAR driver Michael McDowell lost control of his car and hit the wall at 170 mph. Fortunately, McDowell was able to walk away from the accident, which is a testament to the safety elements NASCAR has instituted. NASCAR officials apply the scientific principle of the conservation of energy to strengthen their safety measures. Part of "The Science of Speed" series.
Engineers are motivated to improve our quality of life, and they typically develop new products to achieve this goal. They use several steps in developing new products: design phase, testing phase, and production and maintenance phase. During the design phase, engineers specify the functional requirements of the product. They also produce a prototype to evaluate its overall effectiveness. They also consider cost, reliability, and safety. During the last two phases, engineers determine if any failures of the components are likely and where they occur. In these processes, engineers use computers to create designs, analyze functionality, and simulate how a machine, structure, or system operates.
Fire scientist David Bowman gives a testimony of the danger of catastrophic bushfire around his hometown of Hobart, Tasmania. As record bush fires continue to plague the country, the work of Bowman and his colleagues to understand the causes and consequences of these events becomes ever more pressing. Part of WildFIRE PIRE series.
For nearly 40 years, Dr. Ellen Ketterson and her research team from Indiana University have been studying juncos in the mountain forests of Virginia. This segment introduces viewers to the junco, the researchers, and the core methods they use to study birds. Set in field, lab, and aviary locations, one landmark study is highlighted in detail: a long-term field experiment investigating the complex effects of the hormone testosterone on behavior, physiology, and evolutionary fitness. Part of Ordinary Extraordinary Junco (Chapter 2).
Showing collections 1 to 5 of 5
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Biology related concepts
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Resources to teach younger students about animals
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