FLI - Future of Life Institute Euler Archive online - Works by Euler | Euler Archive | University of the Pacific The Eneström Index. In 1913, Swedish mathematician Gustaf Eneström completed a comprehensive survey of Euler's works. He enumerated 866 distinct works, including books, journal articles, and some letters he deemed to be especially important. Each of these was assigned a number, from E1 to E866, which is now referred to as the "Eneström number." Most historical scholars today use Eneström numbers to identify Euler's writings quickly. Euler Translation. Other Resources. Follow index Publications from 1726 1726 E1: Constructio linearum isochronarum in medio quocunque resistente Publications from 1727 1727 E2: Dissertatio physica de sono E3: Methodus inveniendi traiectorias reciprocas algebraicas Publications from 1728 1728 E4: Meditationes super problemate nautico, quod illustrissima regia Parisiensis Academia Scientiarum proposuit Publications from 1729 1729 E5: Problematis traiectoriarum reciprocarum solutio E6: Dissertatio de novo quodam curvarum tautochronarum genere Publications from 1732 1732
Numberless Word Problems | Teaching to the Beat of a Different Drummer Have you ever said or thought any of the following? “They just add all the numbers! It doesn’t matter what the problem says.”“They don’t stop to think! Then you might be interested in trying out numberless word problems with your students. In essence, numberless word problems are designed to provide scaffolding that allows students the opportunity to develop a better understanding of the underlying structure of word problems. My Blog Posts I’ve written about numberless word problems at various points on my blog. Numberless Word Problems – This is the initial post I wrote about numberless word problems. Problem Banks Below are banks of problems organized around the CGI problem types. Addition and Subtraction Problem Types Multiplication and Division Problem Types Other Blog Post Collection Would you like to hear how other educators have used numberless word problems? If you write a blog post and would like me to include it here, just fill out this form. Like this: Like Loading...
Centauri Dreams — Imagining and Planning Interstellar Exploration Encyclopedia of Mathematics Desmos Art: A Definitive Guide to Computational Sketching | Math Vault If you’re of the type who enjoys playing around with graphing calculator, then you might be interested in the so-called Desmos Art. These are basically pictures and animations created in Desmos primarily through the clever use of equations and inequalities — among other features such as tables, animating sliders and regression models. Indeed, if you go to this official staff pick page, you should see that a whole bunch of creative artworks were already being created — anything from cartoon characters, landscape to logos and portraits. But here’s a problem: when you reach a Desmos artwork page, you get to see the end-result with all the equations and inequalities, without necessarily having any clue about how the sketching process comes about from the beginning to the end. Why does this weird-looking equation pop out from nowhere? Table of Content I) Step 1: Initial Setup — Source Picture II) Step 2: Divide and Conquer III) Step 3: Portion Crunching a) Step 3a: Drawing Curves c) Skirt & Legs
Weird things start to happen when you stare into someone's eyes for 10 minutes Giovanni Caputo recruited 20 young adults (15 women) to form pairs. Each pair sat in chairs opposite each other, one metre apart, in a large, dimly lit room. Specifically, the lighting level was 0.8 lx, which Caputo says "allowed detailed perception of the fine face traits but attenuated colour perception." When the 10 minutes were over the participants filled out three questionnaires: the first was an 18-item test of dissociative states; the other two asked questions about their experience of the other person's face (or their own face if they were in the control group). The participants in the eye-staring group said they'd had a compelling experience unlike anything they'd felt before. Caputo thinks the facial hallucinations are a kind of rebound effect, as the participants in the eye-staring group returned to "reality" after dissociating. Other clues come from prior research by Caputo and others. Caputo, G. (2015).
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