All objects, irrespective of their mass, experience the same acceleration g when falling freely under the influence of gravity at the same point on the Earth. Close to the Earth's surface, g=9.8 m s−2. The weight of an object is the force F g due to gravity acting on the object, and for an object with mass m the weight is given by F g=mg.

If the height of an object of mass m changes by Δh, the ch
Author(s): The Open University

According to the UR Agreement on Agriculture, import quotas were to be abolished, but since no country was prepared to expose its farmers abruptly to the rigours of free trade, quotas were to be replaced by ‘equivalent’ tariffs, which were to be reduced over time. However, the calculation of equivalent tariffs is subject to wide margins of error, and since it was left to each country to determine its own tariffs, most were set at extraordinarily high levels – exceeding 200 or even 300 p
Author(s): The Open University

## Study another free course

There are more than 800 courses on OpenLearnfor you to choose from
Author(s): The Open University

Moles
Grant's golden mole are completely blind. They used their hearing in the sand to hear the sound that made by the insect. They travel under the sand and go find the insect and eat them. This 2:32 video explains how this unique animals lives.
Author(s): No creator set

Time conversions are also ratios. The ratio of time measured in minutes to time measured in seconds is one to sixty (1:60), as there are sixty seconds in a minute.

## Example 2

Adam's grandfather ran a mile in Author(s): The Open University

Burnham And Berrow Golf Course, Somerset. Opened in 1891 by Burnham Golf Club, the course was originally nine holes. It was extended in 1896 and the club changed its name to Burnham and Berrow Golf Club. Here golfers prepare to tee off outside the pavilion. Photographed in June 1898 for the London, Midland and Scottish Railway.

Author(s): No creator set

Virtual Maths, Calculating the Volume of a Brick Demo
Interactive simulation, calculating the volume of a brick
Author(s): Leeds Metropolitan University

Weather on Jupiter, Part 5 of 7
This video compares Jupiter's lightning to lightning on Earth and is suitable for older elementary, middle school, and high school students. (02:05)
Author(s): No creator set

At the time of writing (2004) 20% of the adult population of the UK is classified as obese. The number of obese children has doubled since 1982, 10% of six year olds and 17% of fifteen year olds are now classified as obese. As shown in Table 4, obesity is recognized when the BMI exceeds 30 and occurs quite simply wh
Author(s): The Open University

We began this course by posing the question: what is a crime? Shouldn't we be finishing with a clear and unambiguous answer to this? Well we are sorry to disappoint you, if that is what you were expecting, but it doesn't look to us as if there is a simple, unambiguous answer. At the very least, according to Sections 1 and 2 of this chapter, there are: legal and normative definitions of crime; recorded and unrecorded crimes; the crimes we fear and the crimes that fascinate us; and stories of c
Author(s): The Open University

After studying this course, you should be able to:

• show an awareness of the process and principles of performance management/appraisal in schools

• identify the negative aspects of appraisal systems and consider how these might be overcome

• understand more fully the role of the governing body in the performance review process, especially in relation to reviewing the headteacher's performance

• discuss performance with regard to pay awards,
Author(s): The Open University

The mentor and school co-ordinator will formally record the student teacher's assessment outcomes in the school experience report, sign a copy of this and send it with the required documentation for each level to the Open University.

The student teacher will complete the assessment tasks for their assessment portfolio and send it to their tutor. The student teacher prepares for the next level of work by recording their progress and identifying priorities subject knowledge audit screens.
Author(s): The Open University

As the polygons become more complicated, so the identifications become more difficult to visualise. For example, what happens if we try to identify the edges of an octagon in pairs, as indicated by the edge labels and arrowheads in Figure 34? Author(s): The Open University

Why URI?
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Author(s): No creator set

## 7.2.1 How do I find the information required to carry out COSHH risk assessments?

The best source of information is the material safety data sheet (MSDS). By law (CHIP3) this should accompany any chemical that is purchased. However, if this is not available, or the chemical is old, then copies can be obtained from the manufacturer's website or information can sometimes be found in the
Author(s): The Open University

El Derecho internacional privado (= DIPr.) es el sector del ordenamiento jurídico de cada Estado que se ocupa de la regulación jurídica de las “situaciones privadas internacionales” (= “concepción privatista del DIPr.”). Esta concepción privatista del DIPr. es una concepción con coherencia científica (=el objeto del DIPr. está compuesto por una serie de relaciones jurídicas de caracteres similares: son relaciones entre particulares y que presentan carácter internacional). Es un
Author(s): Creator not set

Dividing Decimals, Part 1 of 3 - Khan Academy
This video is from Sal Khan about dividing decimals using the problem: 1.03075 divided by 0.25= ? Mr. Khan uses computer software for demonstration. The screen is a little 'busy' so the viewer may want to open the screen to 'full screen' to see more clearly. (05:32)
Author(s): No creator set

History of Mathematics : Who Invented Math?
To learn who invented math, first one must define what math is exactly. Learn who invented math from a mathematics instructor. He discusses whether or not the neandarthal man did know about mathematics.  Speech of narrarator is shown as text on the bottom of the screen.

Author(s): No creator set

This section gives advice and guidance to help you compile and present a portfolio of selected work. You are strongly advised to read through this section so that you have an idea of what is expected.

The key skills assessment courses provide an opportunity for you to integrate your development of key skills with your work or study. You may choose to concentrate on skills that you need to develop and improve for your job, for a new course, or personally to help you keep abreast of new d
Author(s): The Open University

As with all other communication, the production of science communication does not exist in a social vacuum. It involves norms and conventions that science communicators learn as part of the process of becoming a scientist. As you have seen, in taking on this social role scientists are both motivated and constrained in how they communicate, depending on the content and context of the communication. Indeed, part of the remit of this course is to develop your skills as scientists, to ensure that
Author(s): The Open University