http://www.youtube.com/watch?v=vqDbMEdLiCs
Related: Physical world (Physics)Balancing Brooms - finding the centre of mass Listen Now Download as mp3 from the show Should I Lie Down to Tan? What you Need What to do Point the index fingers of both hands and hold your hands apart but parrallel. Get someone to balance the broom horizontally on your two index fingers, making sure you keep them level. Quel Milieu pour l’apprentissage par problématisation en sciences de la vie et de la terre ? 1Les études que notre équipe mène au sein du CREN (Université de Nantes) sur les apprentissages des sciences de la vie et de la Terre (SVT) nous ont conduits à développer un cadre théorique, celui de l’apprentissage par problématisation, en articulant des références à Bachelard et Canguilhem avec des études de cas considérées comme autant d’investigations épistémologiques (voir, par exemple, Orange, 2002, 2005). Ce cadre théorique prend place dans une réflexion plus large sur la problématisation et ses liens avec les savoirs et les apprentissages (Fabre 1993, 1999). 1 Elle dit reprendre ici une distinction proposée par Brousseau en 1997. Dans cette théorie des « sit (...) 2 Pour des raisons pratiques, une partie de nos références et leur pagination renvoient à Brousseau, (...) 3 Des savoirs sont dits apodictiques s’ils présentent, dans un cadre problématique donné, un caractèr (...) 4Plus largement, c’est la référence à l’apprentissage par adaptation de la TSD qui nous pose problème.
Insulation Experiment: Keep Your Body Warm Ever wonder why your mom makes you wear two or three layers of clothing when you want to go outside and build a snowman? These clothes are actually great insulators, which mean they're made from materials that keep your body temperature from dropping. In this insulation experiment, you'll learn which fabrics help keep you warm on an icy winter day. Some weather conditions, such as rain, wind, and snow cause our bodies to lose heat. If you don't select the right materials to keep your body warm and toasty, you'll start to shiver from the cold. Wearing warm, insulating clothes allows you to stay outside even longer, having snowball fights with your friends, creating snow angels, and building igloos to play in.
Phase Changes Data will not be saved If you are taking a class, check in with your teacher about logging in to save your work. States of Matter Phase Changes The state of matter is determined by the temperature and by forces of attractions between the atoms of a substance. You can explore the role of temperature and Van der Waals attractions (the small forces that attract all atoms to each other) on the state of a particular material. TryEngineering Lesson Focus Lesson focuses on the engineering behind keeping food and other items cool. Students work in teams to develop a system to make an insulated liquid container that will keep chilled water as cool as possible for an hour using everyday items. Students will need to devise a way to have a thermometer rest in the water and be able to read the temperature throughout the hour.
The Science of Heat (Children's Encyclopedia of Science): 6. Rays of Warmth Stand outside on a warm summer day and you can feel the Sun's heat on your face. But how does it reach you? There is nothing but 93 million miles of empty space between the Sun and the Earth. Heat can only travel by conduction or convection where there is matter. To cross empty space, it must move by a different means.
Inspire Her Mind Science There’s a young 4-year old girl shuffling through a chest full of various dress-up clothes. The copy asks: Does dress-up determine her future? Scroll to the left, and the girl picks up a princess dress from the chest. She walks over to a mirror and holds the dress in front of her. The girl in the mirror, representative of her imagination, is wearing the dress and holding a wand.
Colorful Convection Currents Fill two bottles with warm water from the tap and the other two bottles with cold water. Use food coloring or the Fizzers coloring tablets to color the warm water yellow and the cold water blue. Each bottle must be filled to the brim with water. Hot over cold: Place the index card or old playing card over the mouth of one of the warm water bottles.
Teaching with TLC: 10 ways to make physical science FUN! This month we've been completing lots of physical science lessons that my kids do not want to put down. I just love it when they are hooked on learning! My kids have been learning all about simple machines, matter, and electricity from the best science teachers at the Edison Home. What better place to learn about science than Edison's home! Chemical Reaction Games For Kids & Learning About Combustion In a chemical reaction a reactant is consumed during a reaction while a product is formed as a result. In this game two examples of chemical reactions are highlighted: combustion and gasification. In both cases a hydrocarbon (such as oil, coal or wood) and oxygen are the reactants, while the products vary depending on the process and amount of oxygen. Any product of a chemical reaction that is not the intended product of the reaction is a by-product. In combustion processes, heat is the main intended product, and the chemical compounds that are produced are considered by-products.
Physicists Achieve Quantum Teleportation of Photon Over 25 Kilometers For the first time, a team of physicists have successfully teleported a quantum state of a photon to a crystal over 25 kilometers away through a fiber optic cable. This effectively showed that the photon’s quantum state, not its composition, is important to the teleportation process. The team was led by Nicolas Gisin of the University of Geneva and the results were published in the journal Nature Photonics. With this new paper, Gisin’s team has successfully squashed the previous record they set a decade ago by teleporting a quantum state of a proton 6 kilometers. Physics – News, Research and Analysis – The Conversation – page 1 The energy needed to pull magnets apart comes from you, and you get it from the food you eat. And the plants or animals you eat get their energy from other plants and animals, or from the Sun. All energy comes from somewhere. The award of a Nobel Prize in physics to Donna Strickland is an opportunity to build support for women in science, says one female physics professor.
Design Tools in Didactical Research: Instrumenting the Epistemological and Cognitive Aspects of the Design of Teaching Sequences Abstract European programs of design research have developed distinctive types of apparatus to structure and support the process of didactical design. This article illustrates how intermediate frameworks and design tools serve to mediate the contribution of grand theories to the design process, by coordinating and contextualizing theoretical insights on the epistemological and cognitive dimensions of a knowledge domain for the particular purposes of designing teaching sequences and studying their operation. The development and analysis of intermediate frameworks and design tools of these types provides a promising approach to establishing a public repertoire of theoretically informed apparatus for didactical design.