Name ______________Period ____

The Engineering Design Process

Your teacher is going to show you a video on how the Engineering Design Process is a lot like throwing a Taco Party. While the video is playing, refer to the diagram below. Pay attention to the different steps in the design process and what happens in each step. You can also take some notes on the video. (Video link: https://youtu.be/MAhpfFt_mWMYouTube search term: The Engineering Design Process: A Taco Party from KQED QUEST)

Notes on the Taco Party video:

Now your teacher is going to show you a video about engineering a design to help clean the drinking water in Bangladesh. The first time the video is played, just pay close attention to the story. Video link: https://youtu.be/Inc-I8CWT94 YouTube Search term: Cleaning Drinking Water in Bangladesh Engineering for Good KQED QUEST

You will now watch the Bangladesh video a second time, but this time you will be required to take specific notes!

Your teacher is going to divide you into groups of 4. Each student in the group will be responsible for taking notes on TWO of the engineering design process steps. Coordinate with your group decide which TWO steps each member will record. Record your evidence of the scientists and engineers in the video working through each of the steps below. When the video is over, meet with the rest of the students in your group and share results. Use the notes from the other students to have answers for every step of the Design Process.

Define the problem

Identify constraints and criteria for success

Brainstorm multiple solutions

Select the most promising solution

Prototype the solution

Test and evaluate the prototype

Iterate to improve the prototype

Communicate the solution

KQED Learning: Engineering for GoodEngineering Design Process In Action - Answer

GuideChoose TWO of the engineering design process steps below and circle them. Record evidence you find of the scientists and engineers in the “Engineering Is Cleaning Drinking Water in Bangladesh” video working through each of those steps.

★Define the problemDhaka has 30,000 people per square km without sewage treatment. There is a lot of poop with germs and people, especially children, get sick and die from disease. The problem is how to provide clean drinking water to Dhaka.

★ Identify constraints and criteriaThe solution for disinfecting water needed to be low-cost and easy, and effective at killing bacteria, viruses and pathogens. They knew they wanted to use chlorine. The solution needed to be compatible with the hand pumps people use in Dhaka to get water.

★ Brainstorm multiple solutionsThey prototyped and tested many types of devices over a couple of years.

★ Select the most promising solutionThey developed and selected their “Venturi system,” which allowed them to control the amount of chlorine being added to the water.

★ Prototype the solutionThey created a prototype to test in Dhaka.

★ Test and evaluate the prototypeThey tested the Venturi system in Dhaka. They tested bacteria and chlorine levels in the water.

★ Iterate to improve the prototypeThey used a 3-D printer while in Dhaka to iterate on their design.

★ Communicate the solutionThe “Cleaning Drinking Water in Bangladesh” video is helping to get the word out!