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Empathize with potential users to find issues and uncover needs and potential design opportunities

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Empathize with potential users to find issues and uncover needs and potential design opportunities

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Choose a design, identify key features or potential users and their requirements, Identify criteria for success and any constraints.

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Choose a design, identify key features or potential users and their requirements, Identify criteria for success and any constraints.

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Decide on how and with whom to share their product.Demonstrate their product and describe their process, using appropriate terminology and providing reasons for their selected solution and modifications.Evaluate their product against their criteria and explain how it contributes to the individual, family, community, and/or environment. Reflect on their design thinking and processes, and evaluate their ability to work effectively both as individuals and collaboratively in a group, including their ability to share and maintain an efficient co-operative work space, Identify new design issues

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Decide on how and with whom to share their product.Demonstrate their product and describe their process, using appropriate terminology and providing reasons for their selected solution and modifications.Evaluate their product against their criteria and explain how it contributes to the individual, family, community, and/or environment. Reflect on their design thinking and processes, and evaluate their ability to work effectively both as individuals and collaboratively in a group, including their ability to share and maintain an efficient co-operative work space, Identify new design issues

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Identify and use sources of information, Develop a plan that identifies key stages and resources. Explore and test a variety of materials for effective use.  Construct a first version of the product or a prototype, as appropriate, making changes to tools, materials, and procedures as needed. Record iterations of prototyping.

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Identify and use sources of information, Develop a plan that identifies key stages and resources. Explore and test a variety of materials for effective use.  Construct a first version of the product or a prototype, as appropriate, making changes to tools, materials, and procedures as needed. Record iterations of prototyping.

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Test the first version of the product or the prototype, Gather peer and/or user and/or expert feedback and inspiration. Make changes, troubleshoot, and test again.

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Test the first version of the product or the prototype, Gather peer and/or user and/or expert feedback and inspiration. Make changes, troubleshoot, and test again.

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Identify and use appropriate tools, technologies, and materials for production.Make a plan for production that includes key stages, and carry it out, making changes as needed.Use materials in ways that minimize waste.

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Identify and use appropriate tools, technologies, and materials for production.Make a plan for production that includes key stages, and carry it out, making changes as needed.Use materials in ways that minimize waste.

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Generate potential ideas and add to others’ ideas. Screen ideas against criteria and constraints. Evaluate personal, social, and environmental impacts and ethical considerations. Choose an idea to pursue.

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Generate potential ideas and add to others’ ideas. Screen ideas against criteria and constraints. Evaluate personal, social, and environmental impacts and ethical considerations. Choose an idea to pursue.

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Example project: Water Purification in Eastern Africa

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Example project: Water Purification in Eastern Africa

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Research water issues, find current methods of water purifying and discover ways to re-create ways of purifying water.
Cross Curricular Content:
Socials https://curriculum.gov.bc.ca/curriculum/social-studies/6

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Learn more about charity: water's work in Rwanda, and how our projects are bringing clean drinking water to developing countries.

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Example project: Water Purification in Eastern Africa

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Example project: Water Purification in Eastern Africa

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Narrow down a few practical ways that people use to purify water, who would use it and how. What would make this system successful or not?

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Example project: Water Purification in Eastern Africa

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Example project: Water Purification in Eastern Africa

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In groups, discuss ideas. Assign roles within group, such as a point person for ethics, one for social impacts, one for environmental impacts. Report ideas and issues to class. Based on class response, choose an idea to try a prototype of.

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Example project: Water Purification in Eastern Africa

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Example project: Water Purification in Eastern Africa

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Prototyping, testing and making are similar. I see the prototype section as a way of trying different ways of doing the same thing. For example, the students can build a rough model, than try different materials to construct it. Plastic, for example, is easy for us to find and use but may be difficult to find in Rwanda. Students need to think about available materials and how they will be used.
Cross Curricular Content:
Science
https://curriculum.gov.bc.ca/curriculum/science/6

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Example project: Water Purification in Eastern Africa

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Example project: Water Purification in Eastern Africa

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Students demonstrate finished product as a presentation in school display.  Creative art, finished prototype and process of learning all demonstrated in display.
Cross Curricular content: Art
https://curriculum.gov.bc.ca/curriculum/arts-education/6

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Example project: Water Purification in Eastern Africa

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Example project: Water Purification in Eastern Africa

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Students evaluate final project and decide how it could be made in volume. Suggestions such as cutting material to minimize waste, sourcing material from sustainable resources or finding material sources locally to allow making in production.

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For those who live in regions where water pours from tubes in their homes, it might be difficult to imagine that there are still people on Earth without access to clean water.

For these people, clean water is often miles away from their homes. They are forced to walk for hours, carrying full baskets of water, only to spend a few more hours filtering that water before it is safe for their families to drink. Researchers around the world are working hard on developing devices to make transportation easier, and ones to make purification quicker.

But what about a single device that could do both?

"We had already seen some ideas out there that filtered water, and others that rolled the water using barrels, but we wanted to create something that filtered while you rolled," said Mechanical Engineering (MechE) senior Deepak Ravi. "Something better than doing the two of them separately."

Ravi and fellow MechE seniors Anna Mirabella, Jack Kaplan, Veronica Jamie-Lara, and Alex Baker put their heads together and designed the Water Transportation and Purification System.

"The design is basically a big barrel with a smaller barrel inside of it, attached to a handle," Mirabella said. "As you roll the barrel along, the relative motion between the handle and the spinning barrel pulls dirty water from the outer barrel through a filter and into the inner barrel where it stores the newly cleaned water."

The design uses only a few simple parts and requires no power, only mechanical energy provided by the rolling of the barrel. It uses a Sawyer water filter, which never needs to be replaced, and recycled industrial barrels - food-grade plastic barrels that are normally thrown away. With PVC pipe for the handle, the whole prototype cost only about $200. When mass-produced, the team estimates the total cost at only $40 per unit.

"We've decided to make this design open source," Mirabella said. "If someone wants to manufacture our system and get it down to that $40, none of us would be upset. It would be awesome to have had a small part of something big."

Another way this product will keep costs down for the user is its instantaneous filter. Since the water is already purified en route home, users can empty the clean water into a container, then hand the device off to their neighbor. That way, a single device can be shared among an entire community.

The team developed the idea as the final project for their Mechanical Engineering Senior Design course, taught by Associate Teaching Professor Noé Vargas Hernández. The class is required of all MechE majors for graduation and emphasizes the ability to take a project from conception to prototype over the course of a semester.

"This wasn't just a mechanical engineering project for us," Ravi said. "Some of us are also design minors, so we thought about how it would be filled, and how it would be made. We thought about the user. That's why we went with a 15-gallon tank; 15 gallons is about a weekly supply of water for a family in the developing world."

"I think that's one of the best things about being able to work here at Carnegie Mellon," he said. "All of our different disciplines combine to make the best outcome."

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Students Design Water Barrel That Filters As It Rolls - Science and Technology Research News

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For those who live in regions where water pours from tubes in their homes, it might be difficult to imagine that there are still people on Earth without access to clean water. For these people, clean water is often miles away from their homes. They are forced to walk for hours, carrying full baskets of ...

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Example project: Water Purification in Eastern Africa

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Example project: Water Purification in Eastern Africa

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Based on info from prototyping, test the final example and get feedback from classmates. Identify practical problems and find options based on feedback. It is important that students see this as a process. Each iteration of the project is either kept or recorded to show the steps in the process.