Simulation list Return to main menu HTML5 Simulations Updated 4/3/2019 - 206 simulations of mine plus 4 others Beyond physics at the Statue of Liberty Climate Change Vector Addition Motion in 1 dimension Motion in 2 dimensions Forces Circular motion Momentum and Energy Gravitation Rotation Harmonic Motion Fluids Heat and Thermodynamics Waves Electric charge and electric field Electric circuits Magnetism Electromagnetic induction AC Circuits Electromagnetic waves Geometrical Optics - Reflection and mirrors Geometrical Optics - Refraction and lenses Interference and Diffraction Quantum and Nuclear physics Advanced (or other) topics External links The counter has been running on this page since 8-8-2018.
Virtual Pet Games | Free Online Games | Neopets Virtual Neopets Games Neopets.com has tons of pet games, whether you're looking to dive into a world of adventure or just relax with some quick entertainment. You'll meet new Neopets in our games, along with their companions, Petpets, and of course the faeries of Neopia also make an appearance. There are plenty of action games for when you want to run around and test your arcade skills. On the other hand, try one of our puzzle games if you want more thinking and less crazy clicking. Acara Eyrie Gelert JubJub Kacheek Kougra Lupe Shoyru Uni Xweetok Popular Neopets Games
Should we teach kids about porn’s harms? Yes, and here’s how Image: Bigstock Warning: the following article contains graphic descriptions of pornographic material. Sean Covey, son of the famous Stephen Covey, has written a terrific book for teens that I regularly recommend to parents: The 6 Most Important Decisions You’ll Ever Make. In the chapter on addictions, Covey calls pornography “the addiction of the 21st Century.” The sexual revolution normalized pornography. When do kids start watching porn? Unfortunately, exposure to Internet pornography is happening at younger and younger ages. If you have an elementary school-age child, I encourage you to read, together, a picture book titled Good Pictures Bad Pictures: Porn-Proofing Today’s Young Kids by Kristen Jenson and Gail Poyner. The authors acknowledge that good parents want to protect their children’s innocence, but they point out, “Children all over the world begin viewing hard-core Internet pornography long before their parents even consider discussing its dangers.” What does internet porn show?
/wp-content/uploads/2015/08/dino.txt % (Header) (Generated by gcodetools from Inkscape.) (Using default header. To add your own header create file "header" in the output dir.) M3 (Header end.) Physics Simulations at The Physics Classroom Physics Interactives with Concept Checkers Beginning in the Fall of 2022, Task Tracker and Physics Interactives collide to produce Concept Checkers. Task Tracker is our tool for tracking student progress on website activities. A Concept Checker is an interactive questioning module used to access student comprehension. We have generated more than 50 Concept Checkers for use with the Physics Interactives. And we have incorporated our Task Tracker code directly into several of the Interactives. Welcome to Physics Interactives! Interactives are organized by topic. Topics: 1-Dimensional Kinematics Match an animated motion to a verbal description or a graphical description in the Name That Motion and Graph That Motion Interactives. Visit 1-D Kinematics Interactives. Newton's Laws of Motion Explore relationships pertaining to applied force, friction force, mass, and acceleration with the Force Interactive. Visit Newton's Laws Interactives. Vectors, Projectiles and Two-Dimensional Motion Magnetism
ONE TRILLION TREES: How Children Can Save the World I learned, while doing my research, that trees store carbon dioxide and so planting more trees, of course, reduces carbon dioxide. Trees will transform the CO2 gas into wood and release oxygen. As long as the wood doesn’t decay, the carbon will remain stored and negative climate change will slow down. While planting trees alone doesn’t solve the climate crisis, it gives us more time until we find a permanent solution. Inspired, I finished my report with the words: “Let’s plant one million trees in each country of the world!” A crucial part of the organization’s model is that children teach other children. Climate Justice Ambassadors won’t passively accept the climate crisis. This has a crucial advantage. There are now more than 55,000 trained Climate Justice Ambassadors in 53 countries, including China, Germany, India, Rwanda, Slovenia, Peru, Haiti, Thailand, Nigeria, Colombia, USA, Singapore, Italy, Mexico, Poland, and Switzerland. Nine-year-old Felix speaking before the UN.
“An additional reason to abandon learning styles” – teachers and pupils do not agree on the pupils’ preferred learning style By Christian Jarrett “Learning styles” – there can be few ideas that have created such a stark disconnect between the experts on the ground and the evidence published in scholarly journals. Endorsed by the overwhelming majority of teachers, yet dismissed by most psychologists and educational neuroscientists as a “neuromyth”, the basis of learning styles is that people learn better when taught via their preferred learning modality, usually (but not always) described as either visual, auditory or kinaesthetic. Many studies have already uncovered serious problems with the learning styles concept, such as that measures of learning styles are invalid and that students do not in fact learn better via their preferred modality. The study was simple enough – nearly 200 fifth- and sixth-grade pupils (average age 11 years) from five schools chose which was their preferred learning style out of visual, auditory or kinaesthetic. Image via JoanDragonfly / Flickr
CNC Dual Arm Plotter : 11 Steps The blue "arms" L in the above diagram may be regarded as a 2DOF (degrees of freedom) robotic arm with motor M1 acting as the "shoulder" motor. Instead of attaching a heavy "elbow" motor to this arm, a separate motor M2 is connected to the pen by means of a series of light-weight linkages. The final pen position is determined by the resulting parallelogram of forces. Motor choice is not critical other than each motor must be able to resist the "push" from the opposite motor. Maximum plotting area, for a given set of arms, is obtained when motor M2 is mounted directly above motor M1, Construction, however, is greatly simplified if the motors are placed close together as shown. Equations "Plotter Calculations 1" show the required calculations when the input (x) is less than the offset distance for motor1. "Plotter Calculations 2" show the required calculations when the input (x) is greater than the offset distance for motor2. Resolution The plotter resolution varies with distance d1. Accuracy