storybots The StoryBots travel to the Land of the Lymph to learn how a cold virus spreads, how the immune system in our bodies fights viruses, and what we can do to stay healthier. (Wash your hands!) SUBSCRIBE: Wheeler's delayed choice experiment Wheeler's delayed choice experiment is actually several thought experiments in quantum physics, proposed by John Archibald Wheeler, with the most prominent among them appearing in 1978 and 1984. These experiments are attempts to decide whether light somehow "senses" the experimental apparatus in the double-slit experiment it will travel through and adjusts its behavior to fit by assuming the appropriate determinate state for it, or whether light remains in an indeterminate state, neither wave nor particle, and responds to the "questions" asked of it by responding in either a wave-consistent manner or a particle-consistent manner depending on the experimental arrangements that ask these "questions."
Uncovering Da Vinci's Rule of the Trees As trees shed their foliage this fall, they reveal a mysterious, nearly universal growth pattern first observed by Leonardo da Vinci 500 years ago: a simple yet startling relationship that always holds between the size of a tree's trunk and sizes of its branches. A new paper has reignited the debate over why trees grow this way, asserting that they may be protecting themselves from wind damage. "Leonardo's rule is an amazing thing," said Kate McCulloh of Oregon State University, a scientist specializing in plant physiology.
Woodlands Resources Maths Zone - Free Maths Games © Copyright - please read All the materials on these pages are free for homework and classroom use only. You may not redistribute, sell or place the content of this page on any other website or blog without written permission from the author Mandy Barrow.
PDQ Blog An inside look at some of the top teacher prep programs Today NCTQ released its Teacher Prep Review, which takes a close look at the quality of training provided by 2,420 teacher preparation programs across the country. Our results show that most have a long way to go to get teachers classroom ready from day one. But there are some programs that stand out. To paint a picture of what strong teacher prep can look like, we've created short videos on some of the programs that excel overall (Lipscomb University, Ohio State) or in particular areas (Louisiana State in elementary math, Arizona State in student teaching, and Morgan State in elementary and secondary content). It's programs like these that aspiring teachers should strongly think about applying to and that districts should look to recruit from.
SmarterEveryDay Twitter SmarterEveryDay Loading... Working... Free Online Spanish Games The games below are for mobile, tablet and PC. Each game has numerous categories including adjectives, adverbs, verbs, nouns, por vs para and many more. Click on any game link below to see the categories associated with that game. The fun Spanish games below are for teens and adults - not for children. Spanish games with topics suitable for children can be found at Spanish Games for Kids. The nature of nothingness Zilch… Naught… Nada… It’s easy to dismiss the concept of nothing as, well, nothing. In fact, nothing is everything to science – understanding the intangible voids has lead to breakthroughs we could never have imagined possible. Read on to find out why nothing is more important than nothing… Nothingness: Zero, the number they tried to ban
Math Worksheets, Printable Math Exercises for Preschool, Kindergarten, First to Sixth Grades On this page you will find printable math worksheets and puzzles arranged according to levels. We have worksheets from preschool, kindergarten, First grade to sixth graders. These mathematics worksheets are of the finest quality. Follow the links below to download. Sign up- Math Exercises by Grade - Preschool to 8th Grade - Click here InBrief: The Science of Early Childhood Development (Video) Search InBrief: The Science of Early Childhood Development This edition of the InBrief series addresses basic concepts of early childhood development, established over decades of neuroscience and behavioral research, which help illustrate why child development—particularly from birth to five years—is a foundation for a prosperous and sustainable society. View this video en Español >> Download PDF version of this InBrief >>
DIY TV Win the chance to get your animation shown on Cartoon Network! This contest is for folks 17 and under. More info: This is the most exciting contest in the history of DIY! Detexify LaTeX handwritten symbol recognition Want a Mac app? Lucky you. The Mac app is finally stable enough. See how it works on Vimeo. Download the latest version here. Bifurcation diagram In mathematics, particularly in dynamical systems, a bifurcation diagram shows the possible long-term values (equilibria/fixed points or periodic orbits) of a system as a function of a bifurcation parameter in the system. It is usual to represent stable solutions with a solid line and unstable solutions with a dotted line. Bifurcations in 1D discrete dynamical systems Logistic map Animation showing the formation of bifurcation diagram An example is the bifurcation diagram of the logistic map:
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