Critical Thinking and Pedagogy: Rules of Inference
Rules of Inference The goal of logic is to make explicit our intuitions of good reasoning, such that we can distinguish between good reasoning and bad reasoning in terms of an explicit procedure that does not need to rely on intuitions. To do this, logicians formulate the information and the inferences involved in reasoning as propositions. How do we distinguish between good reasoning and bad reasoning? Intuitively, we recognize example 1 to be an instance of good reasoning and example 2 to be an instance of bad reasoning. Let us denote x is a human as P and x is a mammal as Q: We now see that the sentence All humans are mammals expresses a complex proposition consisting of two propositions P and Q, and is of the form: If P, then Q. We can now express the logical structure of examples 1and 2 as: Why is the structure in example 2 bad, in contrast to that in example 1? Rule of inference: Modus ponens Modus Ponens sanctions the reasoning in example 1, but not in example 2.
Gapminder: Unveiling the beauty of statistics for a fact based world view.
201 Ways to Arouse Your Creativity
Arouse your creativity Electric flesh-arrows … traversing the body. A rainbow of color strikes the eyelids. Creativity is like sex. I know, I know. The people I speak of are writers. Below, I’ve exposed some of their secret tips, methods, and techniques. Now, lie back, relax and take pleasure in these 201 provocative ways to arouse your creativity. Great hacks from Merlin Mann of 43 Folders
פיתוח ישראלי: מעמד מוצלח במיוחד לסמארטפון
אפליקציות GPS הפכו למאוד פופולריות בקרב נהגים בעולם בשל היעילות והנוחות שלהן בהכוונה ליעד המבוקש. עם זאת, הבעיה המרכזית בשימוש באפליקציות הללו בזמן נהיגה לא קשור דווקא לאפליקציה עצמה אלא למחסור בפתרון שימושי להצבת הסמארטפון באוטו. כמובן שיש מתקני החזקה למכשירים, אך לרוב הם לא מתאימים למגוון רב של מכשירים, ויש להם נטייה להישבר או להתפרק בקלות. לגל ובועז צוקר, זוג צעירים ישראלי, יש פתרון טוב יותר שיתאים לכל מכשיר בכל סיטואציה שהיא, לא בהכרח ברכב. עם זאת, ניתן להציב את המכשיר גם במקומות אחרים: למשל, אם ברצונכם לטעון את המכשיר אך אין בסביבתכם מדף או אדן חלון בכדי להציב את המכשיר ליד השקע, תוכלו להיעזר בסטיקו על מנת לחבר את המכשיר למטען עצמו ואתם מסודרים. היזמים פנו לקיקסטארטר בשביל לגייס כסף לסטיקו. השאר פרטים לקבלת ניוזלטר אנא הזינו כתובת דוא"ל תקינה אני מאשר קבלת תוכן שיווקי פרטיך לא נשמרו.
2011 World Clock
10 Commandments for a Happy Writer by Nathan Bransford
Writers aren't generally known as the happiest lot. As a recent Guardian survey of some top writers shows, even the best ones don't particularly enjoy it all that much. And in case you think this is a new development, an 1842 letter from Edgar Allen Poe to his publisher recently surfaced in which he was found apologizing for drinking so much and begging for money. But believe it or not, writing and happiness can, in fact, go together. For our Thursday entry in Positivity Week, here are ten ways for a writer to stay positive: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Nathan Bransford is the author of JACOB WONDERBAR AND THE COSMIC SPACE KAPOW, a middle grade novel about three kids who blast off into space, break the universe, and have to find their way back home, which was published by Dial Books for Young Readers in May 2011.
DIWire: The First Desktop Wire Bender by Pensa Labs
Pensa Labs has developed the DIWire Bender, the first desktop CNC wire bender. A new archetype for desktop manufacturing and rapid prototyping, the DIWire transforms drawn curves into bent wire that can be assembled to make just about anything. Our community has told us they want to make antennas, robotics, architecture models, design prototypes, art, furniture, jewelry, small crafts, surgical implants, orthodonture, puppetry, lighting, stage sets, signage and the list goes on. To date, desktop manufacturing has focused on 3D printers outputting plastic volumes and laser cutters cutting 2D planes. However, nothing exists that converts lines into bent rod, wire or tubular forms quickly, accurately, and repeatably. By being transportable, accessible and affordable, the DIWire fills the market gap between time-consuming hand-bending and large scale, mass production CNC wire bending, which is too expensive for custom, short-run productions. We Have - Developed 4 generations of prototypes
Wonderopolis
How to Undress a Victorian Lady in Your Next Historical Romance
8 math talks to blow your mind
Mathematics gets down to work in these talks, breathing life and logic into everyday problems. Prepare for math puzzlers both solved and unsolvable, and even some still waiting for solutions. Ron Eglash: The fractals at the heart of African designs When Ron Eglash first saw an aerial photo of an African village, he couldn’t rest until he knew — were the fractals in the layout of the village a coincidence, or were the forces of mathematics and culture colliding in unexpected ways? Here, he tells of his travels around the continent in search of an answer. How big is infinity? There are more whole numbers than there are even numbers … right? Arthur Benjamin does “Mathemagic” A whole team of calculators is no match for Arthur Benjamin, as he does astounding mental math in the blink of an eye. Scott Rickard: The beautiful math behind the ugliest music What makes a piece of music beautiful?
IfItWereMyHome.com
