AlgTop18: Classification of combinatorial surfaces II
In this lecture we present the traditional proof of the most important theorem in Algebraic Topology: the classification of (two-dimensional) surfaces using a reduction to a normal or standard form. The main idea is to carefully cut and paste the polygons forming the surface in a particular way, creating either a sphere, or a number of crosscaps or handles.
This is the 18th lecture of this beginner's course in Algebraic Topology, given by N J Wildberger of the School of Mathematics and Statisti
Roly Poly Roundup- (Interactive Game)
Play this interactive game to observe roly-poly locomotion and defensive behavior as the player tries to direct them to their home in the log. The player also see that all living things (even roly-polies!) need shelter, food, and water to live. This game can be used to support the Sid the Science Kid episode, Home Tweet Home.
Valentijn : Gedicht zoeken Leerlingen zoeken op internet een gedicht over liefde. Ze schrijven het gedicht op dit werkblad.
Sound Puzzle (Interactive Game)
Listen to these sonic "puzzle pieces" and then rearrange them so that they make sense when played in order. Then try to figure out what is making the sound.
ISS Update: The Role of OSO in Dragon's Demo Mission
NASA Public Affairs Office commentator Pat Ryan talks with Brandon Moncla, Lead Operations Support Officer (OSO) for the SpaceX Dragon Demo Mission, about preparations for the Dragon berthing and hatch opening, and role of the OSO team in station operations.
Science Bulletins: The Final Voyage of Enterprise
Shuttle Orbiter Enterprise was the first of NASA's space shuttles. Its original name, "Constitution", commemorated the United States Bicentennial in 1976, but a campaign led by dedicated fans of the television series "Star Trek" led President Gerald R. Ford to request that NASA change the name to "Enterprise". The shuttle flew eight captive flights on the back of a 747 to evaluate its systems in a flight environment, and five free flights tested its ability to approach a runway and land safely.
Ressources didactiques sur internet Op de startpagina wordt alles per thema voorgesteld. De thema's zijn o.a. artistes, bande dessinée, astronomie, cuisine, correspondants, chansons, écologie et environnements, blogs, sciences, sports en nog veel meer. Ook alle …
Chris Kaiser MIT Professor of Biology
Sylvain Richard, RONA Inc. - JMSB Executive Centre (English)
http://johnmolson.concordia.ca/en/executive-education
Sylvain Richard, Director of Data and Information Management, Merchandising, RONA Inc.
Mr. Richard talks about his learning experience with Altitude, a customized training program designed by the John Molson Executive Centre at Concordia University to meet RONA Inc.'s specific needs.
The College Experience - St. Petersburg College (Alt)
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2.5 Defining surfaces
Surfaces are a special class of topological spaces that crop up in many places in the world of mathematics. In this unit, you will learn to classify surfaces and will be introduced to such concepts as homeomorphism, orientability, the Euler characteristic and the Classification Theorum.
Introduction Sweatshops and the exploitation of workers are often linked to the globalised production of ‘big brand’ labels. This unit examines how campaigners have successfully closed the distance between the brands and the sweatshops, while others argue that such production ‘kick starts’ economies into growth benefiting whole communities. This unit is an adapted extract from the Open University course Author(s):
Health OER Inter-Institutional Project Formative Evaluation of Health OER Design Phase The review was to be based on a study of relevant documents, interviews with academic staff involved in institutional policy making and OER production, interviews with students who had experienced OERs (in cases where this was possible). The e
Prince William, Kate greet Canadians at barbecue
June 30 - Britain's Prince William and his wife, Catherine, The Duchess of Cambridge, attend an official barbecue at Rideau Hall in Otawa. Rough Cut (no reporter narration).
Introduction The unit uses the example of climate change to highlight the dynamic and volatile character of the planet, and how globalisation links together, in often unequal ways, people and places across the world. The unit focuses on the potentially momentous impact of global environmental change on Pacific Islands like Tuvalu. It introduces students to geographical ways of thinking about the world. This unit is an adapted extract from the Open University course
Acknowledgements Except for third party materials and otherwise stated (see terms and conditions), this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Licence The material below appears in: Understanding Environmental Issues (2003) (eds) Steve Hinchliffe, Andrew Blowers and Joanna Freeland
Global Warming and Society's Response
Prof. Sir John Houghton : Course
Learning outcomes After studying this unit you should be able to: recognise the interaction of human and physical processes in the making of environments and the understanding of environmental issues; understand coastal regions as dynamic and contested environments; consider the contested nature of coastal management policies using the case study of managed retreat. Except for third party materials and otherwise state Introduction We begin this unit by looking at an estuary, a place where sea, land and sky meet. We have chosen a particular estuary: the Blackwater estuary on the Essex coast in eastern England. Although the Blackwater has its own unique characteristics, it is used here as a setting, a device for approaching the study of environments. Like any other estuary, the Blackwater brings together a diverse range of processes, elements and issues that constitute the environment. It offers us a way into thinking ab
