## Listing all results (324)

### Manufacturing Nitric Acid

This resource, from the Royal Society of Chemistry ‘Challenging Plants’ resource pack, is a teacher presentation which provides background information on the industrial processes involved in the manufacture of nitric acid. It includes information of the raw materials required and details of each step in the process...

### Skin Area

The task is to consider the process of making estimates to use in calculations before moving to the specific task of estimating the total surface area (i.e. skin area) of a volunteer. This is a readily accessible task, with students only needing basic measurement and estimation skills to get started. It is suitable...

### Using and Abusing Percentages

This activity examines the use of percentages in research and the media. The examples used focus on the distinction between absolute and relative percentages and percentage changes. The need for improved education in the area of communication of risk is at the heart of this resource.

Using and...

### Stocks and Shares

In this activity students begin with a simple introduction to the stock market; calculating new prices for a variety of fictional shares based on daily percentage changes.

The task requires students to calculate simple percentage changes. A spreadsheet is provided for students to record their results which...

### The Princess's Problem

In this resource students deal with an optimisation problem involving perimeter and area based on a Greek mythological story about a princess. She wants to maximise the area contained in a given perimeter and decides on a circle. The concept of the Isoperimetric Quotient Number, IQN, is introduced as a way of...

In this resource students deal with the problem of administering doses of a prescribed drug so that the body does not have too little or an excess of the drug. An understanding of half life is required. Students do not need to use more complicated formulae for exponential decay but that could be introduced in an...

### Do Vampires Exist?

In this activity students consider a population growth problem which leads to a power series. The presentation can be used to introduce the topic and use of spreadsheets would enable students to model and draw graphs of the situation.

Do vampires exist - teacher guidance ...

### The Imp Computer

This unplugged activity from the CS4FN team uses two examples – an insulting computer and one that can play snap – to look at simple computer programming, flow of control and logic. Everything is provided for this front-of-class activity, which would act as an effective starter for a lesson on programming concepts...

### Invisible Palming

This activity from the Computer Science for Fun (CS4FN) team at QMUL is an introduction to algorithms suitable for those in upper primary school. A ‘self-working’ magic trick is shown – this is a trick that works every time, as long as the process is followed exactly. No understanding of the trick is needed by the...

### Locked in Syndrome

These paired activities, from Paul Curzon of the CS4FN team, offer an interesting slant on search algorithms and their relative efficiency.

Students are asked to consider sufferers of ‘locked-in syndrome’, a condition that leaves a healthy mind inside body that is, often, completely paralysed. If the...