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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Page 1 of 2 Why do we use shampoo? There are lots of different liquids that we use to clean things. In this project, you can do some experiments to see why we use shampoo to wash our hair. You will compare three different types of liquid cleaning product – shampoo, liquid soap and washing-up liquid (you could choose other products as well, if you like). Getting Started Collect samples of human hair to use in your experiment. See notes in things to think about. You will also need three liquid cleaning products to test. These could be shampoo, liquid hand soap and washing up liquid. Look at the hairs under a microscope. Describe, draw or photograph what you see. What can the microscope show you that you can’t see with your eye? Does the tip look different to the root? Can you see anything on the side of the hair? Is there a dark line running through the middle? Survey your friends or family about the hair cleaning products they use. Ask them if they think washed hair looks different - if they just say “yes”, ask them how! Wash your hair samples in the three different cleaning products. Dry them and look at them again under the microscope. Describe, draw or photograph what you see. Remember, this needs to be a fair test, so you should think about controlling a number of things such as Click to edit project the amount description of cleaner, the temperature of the water and the way they are dried. How did the hair samples change when washed with (a) shampoo (b) liquid soap (c) washing-up liquid? Did the hair samples feel any different? To extend your investigation, you could measure the pH value of each cleaners and compare this to the results from your experiment. Things to think about Before you get your hair samples, think about: • How will you get the hair samples? Will they be cut hairs, or hairs that have been carefully pulled out? • How many hairs from one person should you look at? • How many hairs make one sample? Useful Resources Try shampoos for different hair: antidandruff shampoo, shampoo for dry hair, shampoo for greasy hair, organic shampoo