Israeli, Hamas rockets hit schools
An Israeli strike on a UN school in Gaza that injured 30 people, most of them children, garnered criticism from the United Nations and even close ally, the U.S. Deborah Gembara reports. Subscribe: http://smarturl.it/reuterssubscribe More updates and breaking news: http://smarturl.it/BreakingNews Reuters tells the world's stories like no one else. As the largest international multimedia news provider, Reuters provides coverage around the globe and across topics including business, financial, na
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Phosphorus is recognised as a potential poison for automotive catalysts. The phosphorus level in fuel is generally very low (2Ã—10âˆ’5 g lâˆ’1), but it is present in higher concentrations in engine oils (1.2Â gÂ lâˆ’1). Phosphorus derived from the engine oil is believed to react with the alumina support, and also to reduce the activity of the noble metal component. This deactivation is particularly important for Pd, with which phosphorus may form an all
Author(s): The Open University

The decibel (symbol dB) is a way of expressing a ratio. It is based on logarithms, and so adding decibels is equivalent to multiplying their corresponding ratios. Decibels can be used to express absolute values by referring them to a reference value.

A common use of decibels is to express ratios of amplitudes. For instance, the amplification (or gain) of an amplifier can be expressed either as the ratio of the output and input amplitudes, or as a certain number of decibels. With a multi
Author(s): The Open University

In this section we introduce an alternative way of describing points in the plane 2 or in three-dimensional space Author(s): The Open University

3.016 Mathematics for Materials Scientists and Engineers (MIT)
This course covers the mathematical techniques necessary for understanding of materials science and engineering topics such as energetics, materials structure and symmetry, materials response to applied fields, mechanics and physics of solids and soft materials. The class uses examples from the materials science and engineering core courses (3.012 and 3.014) to introduce mathematical concepts and materials-related problem solving skills. Topics include linear algebra and orthonormal basis, eigen
Author(s): Carter, W. Craig

Association of Essex Councils Steering Group (1999) Essex Biodiversity Action Plan, London, HMSO.
Baring-Gould, S. (1983) Mehalah, Woodbridge, The Boydell Press (first published 1880).
Blackmore, R. and Barratt, R. (2003) â€˜Dynamic atmosphere: changing climate and air qualityâ€™ in Morris, R.M. et al. (eds).

Author(s): The Open University

Interactive model of an screw dislocation
Interactive, rotatable model of an screw dislocation. From TLP: Introduction to dislocations, http://www.msm.cam.ac.uk/doitpoms/tlplib/dislocations/dislocations_in_3D.php
Author(s): DoITPoMS, University of Cambridge

This course teaches on drawing and interpreting graphs. It has eight sections, each dealing between them with 4 different types of graph. You will need to draw some graphs, so make sure you have a flat surface to work on. You will also need to have centimetre graph paper and your calculator to hand as you study the material.

Section 3 is based on a video band, â€˜Single-track mindersâ€™. This is split into four separate viewing sessions, each followed by an activity. You should expect
Author(s): The Open University

A great advantage of the metric system of units is that conversion between units within the system is particularly easy. For example, â€˜Â£1 is worth 100pâ€™ is converting one pound into pence. To convert pounds to pence, you multiply by 100. So Â£2 is 200p, and Â£2.63 is 263p. (Remember that to multiply by 100, you move the digits two places to the left in the place value table.)

To convert from pence to pounds, you need to reverse this process, i.e. to divide by 100 (moving the
Author(s): The Open University

Digital Camera for Elementary School Teachers
Digital Camera for Elementary School Teachers
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Describes what baptism means at the time it is done, when they are baptized as infants.
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We have seen that none of the rectangular bar, the circular membrane and the circular plate have harmonically related natural frequencies. It may not surprise you to learn, therefore, that instruments containing these primary vibrators tend to produce notes that don't have a very well-defined sense of pitch.

This is certainly true in the case of the cymbal, which has a circular plate as its primary vibrator. Whether a single cymbal is struck with a drumstick or two cymbals are crashed t
Author(s): The Open University

Except for third party materials and otherwise stated (see terms and conditions), this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence

Course image: Da
Author(s): The Open University

Goethe's poem â€˜HeidenrÃ¶sleinâ€™, with which we began, is a mock folksong; â€˜ErlkÃ¶nigâ€™ is a mock ballad along the lines of Scottish models. They are, so to speak, poems in fancy dress. â€˜Prometheusâ€™ and â€˜Ganymedâ€™ are songs on subjects from ancient Greek myth, but they are in no way imitations of ancient classical models. In these two poems Goethe has taken myths and created modern meditations on them of startling, but quite distinct, kinds.

Author(s): The Open University

A pie chart is a diagram in the form of a circle, with proportions of the circle clearly marked. A pie chart is a good method of representation if we wish to compare a part of a group with the whole group. It gives an immediate idea of the relative sizes of the shares. So, for example, it can be used to consider advertising income. It can also be used to look at, say, shares of market for different brands, or different types of sandwiches sold by a store.

Author(s): The Open University

Cover image: Paul Wordingham in Flickr made available under Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Licence.

The content acknowledged below is Proprietary (see terms and conditions) and is used under licence.

Grateful acknowledgement is
Author(s): The Open University

After studying this course, you should be able to:

• understand some current issues in mathematics education, such as the relationship of mathematics content to mathematics processes

• understand a variety of approaches to the teaching of mathematics such as 'do-talk-record'

• approach mathematical problems and tasks in a flexible way.

Author(s): The Open University

HMS Broadsword (F88) off Plymouth. July 1990. This Type 22 frigate of the Royal Navy was commissioned in 1979. She was sold to the Brazilian Navy in 1995. Aerofilms Collection.