This educational booklet, published by Unilever in 1956, gives the history and techniques of food preservation by freezing. Starting with the observations of Clarence Birdseye amongst the Inuits and his subsequent experiments, the booklet follows the story of the changes in the way peas were picked and sold. A full...

A Catalyst article which explores how the nervous system works. Sensitivity, the ability to respond to stimulation, is a product of nervous system activity. How nerve impulses pass around the body, and why these responses are so fast are investigated in the article. Neurones, reflexes, synapses and receptors are...

Mathcentre provide these resources, which cover a selection of the mathematics which students may need to review, to support their progress in their chosen programme of study. These resources are designed to outline techniques or formula which students can use independently to revise a topic briefly, and then...

Purpose: QR codes are a simple way of providing access to information. The code is a pattern of printed rectangles that can be scanned with the camera in a mobile device to link to either web sites or other sources of information. They can be used to enhance practical science by providing reminders of how to...

This set of quizzes, provided by the Association for Science Education (ASE), are part of the SYCD: Science Year theme Who am I? collection and are aimed at Key Stage Three, Key Stage Four and Key Stage Five students.

This document compares the Reduced Instruction Set Computer (RISC) and Complex Instruction Set Computer (CISC) approaches. It provides a useful background and can be used as a reference or for producing revision resources.

This is quick starter activity for A-level students aged 17-18. The aim of the activity is to revise the key differences between RISC and CISC processors and to ensure students can explain which architecture should be used in a given situation.

Bernadette Malcolmson is the author of the resource.

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This very successful citizen science project is run annually by the RSPB. It is an ideal opportunity for pupils of all ages to identify different bird species and count the numbers they see in the school grounds. Details about the competition and the RSPB supporting materials can be found...

A Catalyst article explaining how weather forecasts can help keep the public safe in extreme situations by providing advance warnings: for example, airline pilots rely on accurate information about the development of thunderstorms to help them decide which routes might be at risk from lightning or violent...

This activity booklet uses the real life context of air traffic control using radar signals to identify the position of an aeroplane that students act out. It provides them with an opportunity to use their knowledge of waves and speed = distance / time to calibrate and calculate the distance a plane is from the...

This collection of interactive excel sheets look at radians, arc length, sector area, converting to and from degrees, and other related problems.

The first sheet displays a sector of a circle and corresponding...

This series of activities from NASA take a mathematical approach to looking at radiation, and will make the student familiar with many forms of radiation, how it is measured, and what different doses can lead to over time. They are intended as supplementary problems for students looking for additional challenges in...

A Catalyst article about the safe use of radiation. Radioactive materials are hazardous because they give out ionising radiation. Like many scientific discoveries, radioactivity provokes a mixed reaction. Some seek to commercialise it whilst films and comic books emphasise its harmful effects. The article takes the...

This booklet is part of the ‘Innovations in Practical Work’ series published by the Gatsby Science Enhancement Programme (SEP). Radiation is all around us and is part of our everyday life. Much of the radiation that bombards us comes from natural sources, though we are...

This video discusses the concerns people have about radioactivity and shows that, rather than the radioactivity itself, it is the radioactive atoms that are of greater concern.  Radioactivity (alpha and beta particles) is relatively harmless unless it enters the body.