Koraunui School

Expert feedback From John Cocks, waste engineer

Click to see Alex's device in action.       Click to see Allen's device in action         Click to see Emily's device in action.         Click to see Ethan B's device in action.         Click to see Ethan M's device in action.         Click to see Geneva's device in action.         Click to see Mikaela's device in action.   Click to see Nivarna's device in action.       Click to see Olivia's device in action.       Click to see Sarah's device in action.

Alex. Effectiveness: Good effort. This would collect a little bit of rainwater but a larger area like a sheet of plastic would collect a lot more water. Durability: The funnel as I see it in the photo will need support. User-friendliness: It is easy to understand how it used.   Allen. Effectiveness: It's potentially a good idea, but how does this dispense water? The stones might actually de-stabilise when there is little or no water in the device. Durability: The materials will last well although the plastic will be slowly damaged by the sunlight and get brittle. User-friendliness: If you saw it and were wondering how to wash your hands you might just dip your hands into the container and then contaminate it for everyone else.   Emily. Effectiveness: It is a really creative idea! Trialing or using would show how well it would work when used often. Durability: The paint tin and yogurt container will last well. The skewers and the string may need to be replaced more frequently. User-friendliness: I wonder whether it could be hard for some students to work out how it is used?   Ethan B. Effectiveness: An impresive device! The tube will be effective at directing the flow of water but there needs to be a mechanism to let small amounts out and keep the rest in. At the moment it acts as a reservoir rather than a dispenser of water. Durability: Materials are strong and the construction looks very robust. User-friendliness: It needs some instructions added on how to use it.     Ethan M. Effectiveness: You are containing the water rather than dispensing it in small quantities. You need a container and a means to control small amounts out of the container for students to wash their hands. Durability: Materials are durable. User-friendliness:Are you going to reuse the water for the garden rather than hand washing? If you reused it for hand washing it might get contaminated.       Geneva. Effectiveness: Excellent recycling water theme. You have done this well in the way you have used a house and used a good example of how water is collected into a container for further use. How would you make this water available in small amounts for washing hands? Re the testing of the filter - it would be interesting to learn what you used as a filter. It is an excellent idea. Durability: It looks to be well constructed and strong. It's a fantastic project. User-friendliness: Visually you communicate the methods of collecting water well.   Mikaela. Effectiveness: It is not clear exactly how it works. Durability: The plastic materials are strong. The connections may get loose with water. User-friendliness: It needs instructions to show a person how to use it.   Nivarna. Effectiveness: Well thought out. The device is effective at storing and allocating water and keeping the water for reuse. Durability: Plastic materials are steady but the straws might need replacement form time to time. User-friendliness: Shows a good description of a good idea.   Olivia. Effectiveness: A simple method that will produce a good result. It's effective. It has good storage, good outlet control and there is a simple way of plugging it up at the end of the day. Durability: Made from solid materials. The stick may need to be shaped and replaced as it wears. User-friendliness: Very user friendly and there is a good description. Well done!   Sarah. Effectiveness: Are you supposed to wash your hands when the top ice cream container is tipped over? Then you would use all your water in one hit. Or is there something here I can't see? Durability: Well built and solid. User-friendliness: It is user friendly. A written description is always helpful to help teach someone what to do.     Collect your certificates from here.