Secondary project briefs (ages 11+)


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.


There are more CREST approved resources that have been developed by our partners and providers specific to your region.


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2 years ago

Treatments for dehydration

  • Text
  • Salts
  • Dehydration
  • Oral
  • Experiments
  • Glucose
  • Electrical
  • Treatments
  • Rehydration
  • Devise
  • Commercially
This resource is published under an Attribution - non-commercial - no derivatives 4.0 International creative commons licence (https://creativecommons.org/licenses/by-nc-nd/4.0/). For more information visit our Terms and Conditions (www.crestawards.org/terms-and-conditions).

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Click to edit project description www.crestawards.org

Page 1 of 2 Treatments for dehydration In this project, you will find out about the causes and consequences of dehydration. You will devise some experiments to investigate the constituents of commercially available oral rehydration salts (ORS), a common treatment for dehydration. Getting started You should start by doing some research to find out about the causes and consequences of dehydration. Find out about how to treat dehydration including the use of oral re-hydration salts (ORS) and what they contain. Things to think about How will you make your test fair? Will you test the salts as a powder or made up into a solution? How many times will you test each type of oral hydration salt? Find out how to test for levels of glucose and salt using Benedict's test. Buy a number of commercially available oral re-hydration salts and carry out experiments to confirm that the ORS contains the active ingredients that the manufacturer claims. Most re-hydration salts contain glucose and salt (sodium chloride). Devise experiments to test that your sample contains these ingredients. You will need to present and comment on the results of your research and your tests on the ORS. Useful resources Benedict’s test is a standard test for glucose – you will find the instructions in most GCSE Biology/Science text books - ask your group leader or mentor for help. 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 / deionised water and with a salt solution that you have made up yourself. From this you should be able to arrive at some conclusions about the presence of salt in the ORS. Click to edit project description

Bronze level

Ten hour projects recommended for ages 11+. Find out more about this level and how to gain a CREST Award on the Bronze Awards page.


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Bronze

Silver level

Thirty hour projects recommended for ages 14+. Find out more about this level and how to gain a CREST Award on the Silver Award page.


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Silver

Gold level

Seventy hour projects recommended for ages 16+. Find out more about this level and how to gain a CREST Award on the Gold Awards page


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Gold