This Catalyst article looks at the use of fluoride in water supplies. The UK health secretary has announced that more water companies would be encouraged to add fluoride to the water supplies. The article looks at why fluoride is added, what the advantages and risks are and why should it be put into water.

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This Catalyst article explores how high-speed photography can reveal how mosquitoes can keep dry while flying in the rain.

To find out how mosquitoes survive impacts with raindrops, a group of engineers from Georgia Institute of Technology (USA) developed a system which allowed them to photograph collisions...

This Catalyst article looks at what it means to say that an astronaut is 'weightless'. The article looks at how astronauts are trained in aircraft and how underwater work can also help prepare them for space travel.

This article is from Catalyst: Secondary Science Review 2008, Volume 19, Issue 1.

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This is one of a series of resources from the IET designed around the theme of the future of flight with the purpose of developing pupils knowledge and skills in science, design technology, engineering and mathematics. 

In this activity pupils calculate the amount of energy needed to launch a space...

This sub-collection includes shorter activities which can make effective starter and plenary activities, helping students to engage and further their understanding. The resources are:  

• Mr Zippy's Trainers: This brings together the ideas of friction, air resistance and materials using clear language...

What do dental fillings, catalytic converters, mobile phones and jewellery have in common? They all make use of the metal palladium. This Catalyst article explains the properties of this metal, and how it can be used for a vast array of objects.

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In this activity students consider the questions: Which components of food are healthy and which are not? Why should we care about this? What are the effects of the individual components of food on the human body? What do our families eat? What are the likely effects of what we eat? How can we ensure that the...

From the Chilled Food Association, this resource helps students to think about contamination of food and how the risk of contamination can be reduced. The materials are aimed at STEM ambassadors or company personnel running a session in a secondary school. However, they can be adapted for use by teachers in the...

Work done in this Nuffield 13 - 16 module followed from the B units called ‘Energy’ and ‘Competition and predation’. This S unit provided enough material for eight double periods during a single-certificate science course. The teachers’ guide included 12 worksheets to...

From the Chilled Food Association, this resource helps children to think about hygiene and food microbes. The materials are aimed at STEM ambassadors but are readily adapted for use by teachers in the classroom.

The materials consist of a lesson plan, stimulus materials and suggested activities. In this...