Bronze Awards are typically completed by students aged 11+. They complete a ten-hour project which is a perfect introduction to STEM project work. Over the course of the project, teams of students design their own investigation, record their findings, and reflect on their learnings. This process gives students a taste of what it is like to be a scientist or engineer in the real-world.
Silver Awards are typically completed by students aged 14+ over thirty hours. Project work at Silver level is designed to stretch your students and enrich their STEM studies. Students direct the project, determining the project’s aim and how they will achieve it. They carry out the project, record and analyse their results and reflect on the project and their learnings. All Silver projects are assessed by CREST assessors via our online platform.
Gold Awards are typically completed by students aged 16+ over seventy hours. Students’ projects are self-directed, longer term and immerse them in real research. At this level, we recommend students work with a mentor from their chosen STEM field of study. All Gold projects are assessed by CREST assessors via our online platform. There are more CREST approved resources that have been developed by our partners and providers specific to your region.
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Oral rehydration therapies In this project, you will research the causes and consequences of diarrhoea and dehydration. You will find out about the different treatments available for dehydration and design some experiments to compare commercial and homemade oral rehydration salts. Getting Started You should start this project with some research. Find out about the causes and consequences of diarrhoea and its effect on infant mortality worldwide. Comparing oral re-hydration salts: Choose some commercially available oral re-hydration salts, such as Diarolyte, find out what they contain and compare them with the homemade formula recommended by the WHO. Most oral re-hydration salts contain glucose and salt. Make up samples of the WHO formula and the commercial ORS and devise experiments to test that they contain these ingredients and to compare the contents of the different samples. Can you use your measurements to compare the amount of salt and glucose in each sample? If not can you improve your measurements so that you can? Things to think about You should find out about re-hydration therapy and oral rehydration salts (ORS) including the World Health Organisation (WHO) formula for a homemade ORS. You might want to use the Benedict’s test to check for glucose. Pure water is an electrical insulator but becomes a conductor when salts like sodium chloride are dissolved in it. You could use a battery and an ammeter to set up a circuit to check the electrical conductivity of your samples of ORS. You could compare your measurements with the electrical conductivity of distilled / de-ionised water and with salt solutions that you have made up yourself.. Useful Resources You should try to ask a doctor or pharmacist for advice and information on re-hydration therapies and you could contact an organisation involved in overseas aid aimed at reducing infant mortality due to diarrhoea and dehydration The results: Present the results of your tests on the samples of ORS. Make comments about the use of the WHO formula in areas where high infant mortality rates are due to dehydration caused by diarrhoea. What are the advantages and disadvantages of the WHO formula and commercially available ORS when trying to reduce worldwide infant mortality? Click to edit project description