The Thirty Greatest Mathematicians Click for a discussion of certain omissions. Please send me e-mail if you believe there's a major flaw in my rankings (or an error in any of the biographies). Obviously the relative ranks of, say Fibonacci and Ramanujan, will never satisfy everyone since the reasons for their "greatness" are different. I'm sure I've overlooked great mathematicians who obviously belong on this list. Please e-mail and tell me! Following are the top mathematicians in chronological (birth-year) order. Earliest mathematicians Little is known of the earliest mathematics, but the famous Ishango Bone from Early Stone-Age Africa has tally marks suggesting arithmetic. Early Vedic mathematicians The greatest mathematics before the Golden Age of Greece was in India's early Vedic (Hindu) civilization. Top Thales of Miletus (ca 624 - 546 BC) Greek domain Apastambha (ca 630-560 BC) India Pythagoras of Samos (ca 578-505 BC) Greek domain Panini (of Shalatula) (ca 520-460 BC) Gandhara (India) Tiberius(?) Geocentrism vs.
html Balises de premier niveau Les balises de premier niveau sont les principales balises qui structurent une page HTML. Elles sont indispensables pour réaliser le « code minimal » d'une page web. Code minimal d'une page HTML : 1<! 4 charset="utf-8" 5 Titre Balises d'en-tête Ces balises sont toutes situées dans l'en-tête de la page web, c'est-à-dire entre <head> et </head> : Balises de structuration du texte Balises de listes Cette section énumère toutes les balises HTML permettant de créer des listes (listes à puces, listes numérotées, listes de définitions…) Balises de tableau Balises de formulaire Balises sectionnantes Ces balises permettent de construire le squelette de notre site web. Balises génériques Les balises génériques sont des balises qui n'ont pas de sens sémantique. En effet, toutes les autres balises HTML ont un sens : <p> signifie « Paragraphe », <h2>signifie « Sous-titre », etc. Il y a deux balises génériques : l'une est inline, l'autre est block.
Water is dangerous This was found on the newsgroup: rec.humor.funny A student at Eagle Rock Junior High won first prize at the Greater Idaho Falls Science Fair, April 26. He was attempting to show how conditioned we have become to alarmists practicing junk science and spreading fear of everything in our environment. In his project he urged people to sign a petition demanding strict control or total elimination of the chemical "dihydrogen monoxide." And for plenty of good reasons, since: it can cause excessive sweating and vomiting it is a major component in acid rain it can cause severe burns in its gaseous state accidental inhalation can kill you it contributes to erosion it decreases effectiveness of automobile brakes it has been found in tumors of terminal cancer patients He asked 50 people if they supported a ban of the chemical. He feels the conclusion is obvious.
s Math Resources - Integers: Operations with Signed Numbers Have you ever been to a party like this? Everyone is happy and having a good time (they are ALL POSITIVE). Suddenly, who should appear but the GROUCH (ONE NEGATIVE)! The grouch goes around complaining to everyone about the food, the music, the room temperature, the other people.... What happens to the party? But wait... is that another guest arriving? What if another grouch (A SECOND NEGATIVE) appears? Now that the two grouches are together the rest of the people (who were really positive all along) become happy once again. The moral of the story is that (at least in math, when multiplying or dividing) the number of positives don't matter, but watch out for those negatives!! To determine whether the outcome will be positive or negative, count the number of negatives: If there are an even number of negatives -and you can put them in pairs- the answer will be positive, if not... it'll be negative: Negatives in PAIRS are POSITIVE; NOT in pairs, they're NEGATIVE.
Understanding Evolution For Teachers Text only version Integer Number Line In this lesson,we will look at integers and the number line. Related Topics: More Lessons on Integers Integer Worksheets Integer Games Integers Integers consist of negative integers, zero and positive integers. Example: 0 is an integer but is neither positive nor negative. Negative numbers have a ‘–’ sign before them. Example: –3 is read as “negative three” +6 or 6 is read as “positive six” or “six” Opposite of a Number The opposite of a number is the number with the sign changed. The opposite of 4 is –4 The opposite of –6 is 6 Since 0 is neither positive nor negative, the opposite of 0 is also 0. Number Line Integers can be represented on the number line. An integer on the horizontal number line is greater than the number on its left and less than the number on its right. Example: –1 is greater than –2 and less than 0. We can also write it as –1 > –2 and –1 < 0. Recall that “>” means greater than and “<” means less than. On the number line, moving to the right is positive. OML Search
Tutorials Menu Note: Yo Quiero Math has a new site "Math Para Mi" at " All tutorials and any additional tutorials are being housed in this new site. Please click the link for Math Para Mi. Home Page What are Integers? An introduction to integers-- learning to compare integers. (Discusssion) What is the absolute value of an integer. Adding Integers on The Number Line (Discussion) Rules for adding Integers (Discussion) Subtracting Integers (Discussion) The Laws of Addition (Discussion) work Exercises 1. Work Exercises 2. Work Exercises 3 Practice Adding integers on the Number Line. Using rules to Add Integers Work Exercises 4 Using the number line and Rules to Subtract integers or Sign numbers Exercises 5 Practice your understanding of the laws of addition Exercises 6 Home Page
Adding Signed Numbers - Lesson 101 Video Adding Signed Numbers - Lesson 101 Hi, I’m Larry. This is the video from Lesson 101 on my website, adding signed numbers. This is one of the most important lessons on my site so make sure that you fully understand it and feel fully comfortable with it. I you have difficulty understanding this lesson you will have trouble with all the materials that follows because it builds up on this lesson especially when we get to Algebra we’re going to be using the skill again and again, so make sure that you don’t have any difficulty with it whatsoever. Up until now I’ve been working with adding positive numbers and we haven’t any trouble with that. Now, very often students say something like, “Wow! Now, I like to think of negative numbers as a debts or how much money I owe, so if I say negative three I’ll think of that as I owe $3.00. For this example I’d like to add 3 + -5. Here’s how I like to teach you. Okay, so the situation is I have $3.00 but I owe you $5.00.
The Secret to Teaching Math Facts: Number Bonds Below you will see why I think teaching math basics with number bonds is the best way for your homeschoolers to learn math. Over our last four years of homeschooling, I have used several different math curricula. Some I liked better the others, but they all had their own strengths and weaknesses. One of the strengths of one particular curriculum we use, Singapore Math, is their method of teaching basic math facts. Instead of teaching fact families by rote, Singapore illustrates fact families using number bonds. Now, I realize this is just my unprofessional opinion, but as a self-professed math geek, I truly believe number bonds are (likely) the best ways to teach math facts. Why? They're simple. How Number Bonds Work If you're not familiar with what number bonds are, allow me to illustrate. As in the example for addition on the left, the student is taught to recognize that the number 7 is made of 3 and 4. Number Bond Flashcards Teaching Algebraic Thinking
OCSD Interactive Games Design Your Own Games Pre-Made Games Matching Game Directions- In this game you can match up words. You have two columns to work in . Type in your words in the first column and the matching words in the second column. Type in a Title for your game. Editing Your Matching Games If you need to edit your game open up the matching game and type in the filename in the box and then hit load. Term Matching Game- In this game you can put in terms and definitions. Type in a Title for your game. Graphic Matching Game- In this game you can match up words with graphics or use all graphics. Email me a page (either a web page or a word document) that has the images you want to use. Drag Matching Game Directions- In this game you can match up words by dragging them. Type in a Title for your game. Drag Term Matching Game- In this game you can put in terms and definitions. Type in a Title for your game. Quiz Time- This will allow you to create an interactive multiple choice quiz for your students.