Archive issue 36 issue 35 Issue 34 Issue 33 Issue 32 Issue 31 Issue 30 Issue 29 Issue 28 Issue 27 Issue 26 Issue 25 Issue 24 Issue 23 Issue 22 Issue 21 Issue 20 Issue 19 Issue 18 Issue 17 Issue 16 Issue 15 Issue 14 Issue 13 Issue 12 Issue 11 Issue 7 Issue 6 Issue 5 Issue 4 Centre national de la recherche scientifique | Sagascience, collection de dossiers thématiques en ligne Jean Rouch, l'ethnologue-cinéaste De sa rencontre avec l’Afrique, en 1941, à son dernier voyage au Niger, en 2004, en passant par son entrée au CNRS à la fin des années 1940, le parcours de Jean Rouch continue d’intriguer, de passionner, d’influencer, de susciter des vocations. Il filmait les rites de possession sans pouvoir les comprendre tout à fait, il brisait des interdits et des tabous, tant techniques que sociaux, il cherchait à faire comprendre ce qu’il voyait. Voir le dossier Exoplanètes, à la recherche de nouveaux mondes? En octobre 1995, une équipe d’astrophysiciens, dirigée par Michel Mayor et Didier Queloz à l’observatoire de Haute-Provence, détecte pour la première fois de façon formelle une exoplanète : 51 Pégasi b, un Jupiter chaud. Voir le dossier Exoplanets, the search for new worlds? Eric Karsenti, l'aventurier du vivant Éric Karsenti est le lauréat 2015 de la médaille d’or du CNRS. Voir le dossier Eric Karsenti, Explorer of the living world (English version) Voir le dossier
Let’s not use 21st century technology with 19th century pedagogy Technology may be changing but classrooms and teaching methods are pretty much unchanged since this picture was taken (Creative Commons image) By Larry Magid In a talk at the National PTA Conference in Charlotte, NC, Thomas Murray, State and District Digital Learning Policy and Advocacy Director for Alliance for Education, reminded me of what’s been bothering me for years. To reinforce his point, Murray showed pictures of typical secondary school classrooms taken in 1915 and 2015 and, in both cases, student desks were lined up in rows with the teacher at the front of the room. Thomas Murray speaking at PTA Convention A few years ago I attended a session at an International Society for Technology in Education (ISTE) conference where a marketing person from a smart board company demonstrated how her company’s technologically advanced product could be used to enhance a lecture on geography. Need to be student centered Skills for now and the future Tech safety requires thinking not blocking
CNRS à la une Mois : Octobre - Septembre - Août - Juillet - Juin - Mai - Avril - Mars - Février - Janvier - Octobre 18/10/2016 - "Que reste-t-il à découvrir ?", le Forum du CNRS, à la Métropole européenne de Lille le 19 novembre 2016 C'est la Métropole européenne de Lille qui accueille cette année le Forum du CNRS, "Que reste-t-il à découvrir ?" 17/10/2016 - Quand on en fait tout un fromage Le fromage, on aime ou on déteste. 14/10/2016 - Vidéo du vendredi : Super Naturel | Octobre Dans cette série de 12 films, la nature quotidienne de nos contrées est observée au plus près chaque mois de l’année, nous découvrons l’étrangeté et la complexité d’un milieu en apparence anodin et familier. 14/10/2016 - Le projet CYTER : un procédé de recyclage et récupération des terres rares Le projet CYTER a pour but le développement d'un nouveau procédé simple, efficace, sélectif et de très faible consommation énergétique, pour la récupération et le recyclage des métaux appelés « terres rares ». haut de page Septembre Août Juin
Search TES Resources The Fibonacci number sequence has been astonishing and baffling mathematicians, nature lovers, scientists and the curious mind for ions. This number sequence was introduced by medieval, Italian, mathematician Leonardo of Pisa in his 1202 book, Liber Abaci (Book of Calculation). Along with the Hindu-Arabic numerals, which we use today (0 – 9), he introduced the east Indians use of the Fibonacci sequence through a famous problem about rabbit population growth. The sequence was named after him by number theorist Edouard Lucas in the 19th century. The number sequence is achieved by adding each of two subsequent numbers together to acquire the next number.
10 Ways to Celebrate World Tessellation Day Guest post by Emily Grosvenor. June 17 marks the first-ever World Tessellation Day, a holiday I created to bring awareness to the fun of finding and making tessellations. Will you celebrate with us? Here are 10 great ways to play with tessellations, learn about them, and introduce your children to a math concept that opens a variety of creative learning opportunities. 1) Learn about tessellations with your kids. A tessellation is a tiled mosaic pattern of the same shape laid out over and over again, repeating into infinity. Except where otherwise noted, graphics and photos copyright ©2016 Emily Grosvenor. 2) Look for tessellations in your everyday life. Are you going to Staples or Target today? Take a walk around your neighborhood, looking for man-made tessellations. 3) Notice the tessellations in nature. Have you ever found the hexagonal pattern in a beehive or noticed that mud seems to dry in a patterned way? 4) Explore an artist who works in tessellation. One of the most famous was M.C.
Project: Let’s Get Cooking Let’s Get Cooking! Introduction Fractions are a large part of baking. Ingredient measurements are often given in quarter cup increments. In fact, small measurements are sometimes given in eighths of a teaspoon. In order to successfully bake, it is important to be able to work with fractions. Task You are having a get together and are expecting 30 guests. Instructions Complete each problem in order. 1. 2. 3. 4. 5. HINT: If you need 5 eggs and you already have 2, how many do you need to buy? Collaboration Compare your three recipe cards with another group. Conclusion Create a poster to display your work. Grade Your project will be given a score of 1 to 4, with 4 being the highest score possible.
Math in Daily Life -- Cooking by Numbers Not all people are chefs, but we are all eaters. Most of us need to learn how to follow a recipe at some point. To create dishes with good flavor, consistency, and texture, the various ingredients must have a kind of relationship to one another. For instance, to make cookies that both look and taste like cookies, you need to make sure you use the right amount of each ingredient. Add too much flour and your cookies will be solid as rocks. Ratios: Relationships between quantities That ingredients have relationships to each other in a recipe is an important concept in cooking. 1/2 or 1:2 Both of these express the ratio of eggs to cups of flour: 1 to 2. Working with proportion All recipes are written to serve a certain number of people or yield a certain amount of food. Let's say you have a mouth-watering cookie recipe: 1 cup flour 1/2 tsp. baking soda 1/2 tsp. salt 1/2 cup butter 1/3 cup brown sugar 1/3 cup sugar 1 egg 1/2 tsp. vanilla 1 cup chocolate chips X times 3 = 1 times 9 3X = 9
Eat Your Math Homework . Kitchen Explorers . PBS Parents Pin ItPop quiz. This summer, which question will your kids be more likely answer ‘yes’ to? “Hey kids, do you want to help me bake some brownies?” Or: “Hey kids, do you want to practice your math skills so they don’t get too rusty this summer?” I’m guessing that a whole lot more kids will jump at the chance to bake brownies over practicing math. McCallum and Illustrator Leeza Hernandez have found a clever way to turn math drudgery into deliciousness with their brand new book, Eat Your Math Homework: Recipes for Hungry Minds (see below for how to win a copy of the book.) McCallum explains, “When I first pondered how we could think beyond the ‘drill and kill’ of boring homework sheets, I was a teacher in a middle-class elementary school in Maryland. Each section of the book, directed toward kids ages 7 to 11, includes an algorithm, or a step-by-step recipe, for making a tasty math project. McCallum shares her recipe for Tessellating Two-Color Brownies, below. Pin It Ingredients Instructions
How to Use the Golden Ratio in Design (with Examples) Want to be on the same creative level as Leonardo Da Vinci, Salvador Dali and the designers of the Parthenon? They all have one simple concept in common. The Ancient Greeks were one of the first to discover a way to harness the beautiful asymmetry found in plants, animals, insects and other natural structures. They expressed this mathematical phenomenon with the Greek letter phi, but today, we call it the golden ratio—also known as the divine proportion, the golden mean, and the golden section. Much like the rule of thirds, this mathematical concept can be applied to your graphic designs to make them more visually appealing to the viewer. What is the golden ratio? The golden ratio is probably best understood as the proportions 1:1.618. The ratio itself is derived from the Fibonacci sequence, a naturally occurring sequence of numbers that can be found practically everywhere in nature, from the number of leaves on a tree to the spiral shape of a seashell. Creating a golden rectangle
Attack on the pentagon results in discovery of new mathematical tile | Science In the world of mathematical tiling, news doesn’t come bigger than this. In the world of bathroom tiling – I bet they’re interested too. If you can cover a flat surface using only identical copies of the same shape leaving neither gaps nor overlaps, then that shape is said to tile the plane. Every triangle can tile the plane. Things get interesting with pentagons. The hunt to find and classify the pentagons that can tile the plane has been a century-long mathematical quest, begun by the German mathematician Karl Reinhardt, who in 1918 discovered five types of pentagon that do tile the plane. (To clarify, he did not find five single pentagons. Most people assumed Reinhardt had the complete list until half a century later in 1968 when R. That same year an unlikely mathematical pioneer entered the fray: Marjorie Rice, a San Diego housewife in her 50s, who had read about James’ discovery in Scientific American. But then the hunt went cold. I blog here about maths.
Lessons | math for love Welcome to the Math for Love Curriculum page. We have written up some of our favorite lessons for K-5 in the hopes that they will be useful to teachers everywhere. We have lessons charted by grade and common core tag below. Middle school lessons will be coming soon. The current page represents a kind of first draft, and we want to know what you think. Is the page easy to use? Key CC = Counting and Cardinality (Kindergarten only) OA = Operations and Algebraic Thinking NBT = Number & Operations in Base Ten MD = Measurement & Data G = Geometry NF = Number & Operations—Fractions (3rd, 4th, and 5th only) These games are chosen for their simplicity and depth. These lessons are designed to offer problems that resist easy solutions while encouraging perseverance and deeper understanding. These incredibly powerful, flexible activities can be used with a variety of content and contexts. All materials available through these links are copyright 2014 Math for Love.
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