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3.4 Order of calculations

You may have noticed that sometimes the order in which calculations are carried out seems to matter and sometimes it does not. When using a calculator, it is very important to know the order in which it will do calculations. It is not always the order in which you enter them.

Although written English is read from left to right, this is not the case for all written languages (Chinese is read top to bottom, right to left). With mathematics, the order of the written operations does not alw
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3.3 Division

Division is probably the most awkward of the four arithmetic operations. Since you may have a calculator, you do not need to be able to carry out complicated divisions by hand, but you do need to carry out simple divisions in order to check your calculator calculations. Division is the reverse process of multiplication. The quantity 12 ÷ 3 tells us how many times 3 goes into 12. Since 4 × 3 = 12, 12 ÷ 3 = 4.

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Holocaust survivor Suzy Raful recalls meeting American soldier, later to become her husband,
http://www.yadvashem.org/volary Holocaust survivor Suzy Raful recalls meeting American soldier Robert-Bob Raful, later to become her husband, in Volary On 20 January 1945, approximately 1000 female Jewish prisoners were evacuated from the Schlesiersee (today Sława) camp in Upper Silesia, western Poland, a region annexed to Germany. These women were forced on a death march in a southwesterly direction. On the way, the prisoners passed through other camps, and more women were added to the march.
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5.4.1 Set up and use IT

In using IT effectively you may need to learn how to use particular features of the software applications involved. In word processing, style sheets and templates help you set up consistent formats for essays, reports and other documents. In spreadsheets, macros – sets of instructions that can be repeated as often as necessary – can help you to perform complex numerical operations more easily. In databases, you may need to know how to set up structures so that you can store and retrieve i
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"Turn Step" Step aerobics Exercise
Learn how to do the turn step aerobic exercise in this aerobic fitness video. Instructor slowly demonstrates show you can follow along.  48 sec.
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Josephine: -mp-
Watch Josephine as she sells some interesting items to her friends and neighbors. The goal for this segment is consonant blend -mp-. (0:30)
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Politics in 60 seconds. Property
Professor Christopher Pierson defines a polical concept in 60 seconds for those with a spare minute to learn something new. This videocast focuses on property as a political concept. Warning: video does contain bloopers and out takes. May 2010 Suitable for Undergraduate study and community education Professor Christopher Pierson, School of Politics and International Relations Professor Christopher Pierson is Professor of Politics at the University of Nottingham, director of teaching and lea
Author(s): University of Nottingham

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U.S. Week Ahead: Bernanke faces tough time at Jackson Hole
Aug. 19 - The spotlight will fall on Ben Bernanke when he gives his economic outlook on Friday morning. Reuters Specialist Editor Dan Burns says investors will turn to him for more assurances on the economy.
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Angle Measures in Circles

Students are instructed to find the value of x, using the circle shown on the screen.  The measure of an angle formed by two chords that intersect inside a circle is equal to half the sum of the measures of the intercepted arcs.  Video goes through the problem to solve for x.  Instructor writes down the equation: x = ½ (60 + 110) and then solves the equation.  Good quality video for grade five and up. (01:35
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On Free Speech [Audio]
Speaker(s): Professor Lisa Appignanesi, Professor Rae Langton, Dr Stephen Law, Professor Peter McDonald | What does it mean to have a right to free speech, and who has the right to curtail it? Lisa Appignanesi, prize-winning writer, novelist, broadcaster and cultural commentator, is Visiting Professor in the Department of English at King’s College London. Rae Langton is Professor of Philosophy at the University of Cambridge. Stephen Law is Lecturer in Philosophy at Heythrop College, University
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Flu pandemic : how prepared are we?
In this podcast Professor Robert Dingwall, Director of the 'Institute of Science and Society' at the University of Nottingham, and a member of the UK government’s Department of Heath committee on the ethical aspects of pandemic influenza, discusses the causes and potential impact of a flu pandemic on the UK. In particular, examining how prepared the UK government is to cope with the medical and social impacts of a flu pandemic, and what steps we can take as individuals to protect
Author(s): Dingwall Robert W.J. Professor

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2.6 Context and language variation

As well as contributing to meaning, context can also influence the actual words and sentences that we use. Do you sometimes say ‘Hi’ and at other times say ‘Good morning’? Do you have a ‘telephone voice’? This variation in language may be done deliberately, but often it is not. There are two main reasons as to why we adjust the way we speak:

  • to fit in with our audience or what we feel they expect of us; you may use ‘professional’ langu
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Using the Quadratic Formula
This instructor in this video, Sal Khan, explains the quadratic formula. Mr. Khan uses computer software (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The viewer may want to open the video to 'full screen' as the instructor fits a lot of information on a dark screen.
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Quantifier la similarité de deux séquences (Vidéo)

Le principe est donc de rechercher, dans les bases de données, des séquences similaires à celles que nous sommes en train d'étudier. Nous faisons aussi l'hypothèse que plus les séquences sont similaires, meilleure est la pertinence de l'information attachée à la séquence retrouvée dans la base de données.
Nous allons ...
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3.4.1 Alarm arousal

A potentially life-threatening event, such as a fall in T a to below zero, elicits a transient metabolic response in a hibernator. If the lowered temperature is maintained, the animal responds not just with transient increases in metabolism, but with a sustained rise in T b and complete arousal.

Mechanical stimuli as well as temperature changes can evoke arousal. In animals fitted with electrodes just under the skin to monitor muscle action potentials
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7.3 Drafting essays

As you may remember from Activity 4, the main elements of an essay are:

  • the introduction

  • the main body

  • the conclusion.


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OE Global 2018 conference in Delft, Netherlands
We are exited to announce the annual OE Global conference will be hosted by TU Delft and the Open Education Consortium from April 24-26 2018, at TU Delft, Netherlands. The main theme will be transforming Education through Open Approaches. The call for proposals is now open. The Open Education Global Conference is where the world meets […]
Author(s): Martijn Ouwehand

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As taught in 2006-2007 and 2007-2008. Functional analysis begins with a marriage of linear algebra and metric topology. These work together in a highly effective way to elucidate problems arising from differential equations. Solutions are sought in an infinite dimensional space of functions. This module paves the way by establishing the principal theorems (all due in part to the great Polish mathematician Stefan Banach) and exploring their diverse consequences. Topics to be covered will inclu
Author(s): Feinstein Joel F. Dr

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There are more than 800 courses on OpenLearn for you to
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