A Catalyst article about why human beings need salt (sodium chloride) in their diets to survive, but too much can be toxic. Where does salt come from, and what is it used for? This article looks at salt extraction and mining in England, the domestic and industrial uses of salt as well as its molecular structure....

This activity allows pupils to learn how to analyse samples on Mars. Students are given the opportunity to use targeted information in areas of astrobiology and geology, to work out what their rovers have found on Mars surface and to think like a geologist as they investigate stratigraphy (layers or rocks) using...

The activities in this workbook are designed to help students to understand what happens when a sample is taken, how to calculate the confidence interval for a mean and what this interval represents.

The first three spreadsheets consider samples taken from a normal distribution, a uniform distribution and an...

In this activity students are asked to challenge assumptions made surrounding the selection of random numbers. For simple random sampling every member of the population requires an equal chance of being chosen. Students are required to use this spreadsheet to investigate for numbers up to 30.

This resource...

In this activity, students are given a variety of normal distributions each containing missing numbers. Students are required to fit the given numbers into the correct place. This puzzle is designed to test students’ understanding of the mean and variance of the sample mean for a Normal distribution. A certain...

In this activity, students are given 100 natural numbers, all with value less than one hundred, and are asked to estimate the mean of the population by taking a number of samples, finding the mean of each sample and then finding the mean of the sample means.

This resource is part of the Making Stats Vital...

This activity is designed to deepen understanding of hypothesis testing. Students are presented with a coin which is suspected of being biased. A hypothesis test is set up. A results table is shown giving the significance of the result at different levels of significance for different outcomes. Students are...

In this podcast from the Planet Earth Online collection and the Natural Environment Research Council (NERC), reporters find out how satellites have revolutionised our understanding of climate change.

They provide a completely different perspective on how planet Earth works, which was impossible before the...

A great deal of space exploration is performed by autonomous craft. They have mapped remote planets and even landed to send surface data back to Earth. Satellites have changed the world of communication, earth observation and, through global positioning systems, everyday navigation. This collection, with...

This clip, from Footagevault, could be used for teaching key stage three and four content on energy, electricity and forces, or chemical and material behaviour. The film clip dramatically shows Newton's Third Law of Motion in action, "to every action there is always an equal and opposite reaction...". The footage...

This Save Earth resource presents a critical path analysis problem. It is designed to be used as an additional resource and fun example when teaching critical path analysis. Students are required to interpret and communicate solutions in the context of the original problem, understand, interpret and extract...

Traditional cooking stoves burn fuel and produce a lot of smoke which is a major cause of pollution, leading to problems locally for the people using the stoves and also globally as a probable cause of retreating glaciers. According to the World Health Organisation, four million people worldwide die each year from...

RNLI lifeboat systems engineer, Rhodri Lewis, saves lives at sea through engineering. In this video he talks about his job in the...

Students calculate interest for one year, then compound interest using a decimal multiplier.

This resource is part of the Nuffield Maths Level 1 Foundation resource collection.