Copyright ©2009 Youth Take Heart

Unbreak My Heart

THIS WEEK’S PROBLEM:

How can human-made materials solve heart related problems?

Notes Page

Bioengineering

•Think of 3 words that begin with the prefix “bio.”•What do you think “bio” means?•What do you think that the words “engineer” or “engineering” mean?

Day 1

Notes Page

•Based on your answers, what do you think an “Engineered Biomaterial” is?

•Using a T-chart, brainstorm with your elbow partner a list of possible problems and solutions you think bioengineers may have to design products for.

Compare your ideas with a group next to you

Day 1

Case Study

•Read through it

•Discuss: •What is the damage that needs to be repaired in this case study?•What is a possible solution that could help to resolve the medical problem you identified?

Day 1

Create Design: Brainstorm

Brainstorm:

Describe the problems that Nathan has encountered.Brainstorm a list of possible solutions in solving the problem.Explain your decision. Which need will you meet?

Day 1

Create Design: Illustration

•Each person sketch a design

•Share the design with your group.

•As a group, decide which design you want to use.

Day 1

Create Design: Systems

Define the solution and subsystems of your design.

Day 2

Create Design: Systems and Function and Requirements

•Write the name of each subsystem in your design.

•Write a specific function for each subsystem. What does it do?

•On the next page, determine which are “must-have” requirements, and which are “nice-to-have” requirements.

Day 2

Create Design: Revise It

•Sketch your revised design.

•Explain the need for your design.

•Present your design to the class on Day 3.

Day 2

Presentations

•Summarize the problem you are describing.•Present your model of the problem and explain why it requires a solution.•Explain your solution and how it works.•DISCUSS:

•What are the problems with your solution?•Are there any ethical issues in regards with the device? The patient? The doctor?•What are the pros and cons of your solution?•How well do you think a person’s body would accept the materials used in your solution?•How long do you think that your material would last inside the body?

Day 3

Evaluate Your Design

•How will you measure the success of your model? Use a data table.

•Will you measure the amount of “blood” spilled?•Will you measure the amount of “blood” in the pericardium?•Will you measure the volume of blood in the heart?

•Make a data table and graphDay 3

Build Your Model • Building/Creating your models

• Gather all of the materials you will need in order to build/create a model of the problem as well as your solution

• Build a model of the problem that was presented in your case study

• Build a solution that can be used with your previous model to demonstrate how it could potentially fix the problem

• Fill out your data table and make a graph (if necessary).

Day 4

Generate Reasons and Generalize Results

•With your group, discuss why your design did or did not work.

•Look at your data. What patterns do you see? Can you make a general statement about your model?

Day 4

Compare Your Design!

• Not only had the pencil pierced Nathan's heart, but it had penetrated a valve. He had open-heart surgery. A team of surgeons put the right side of Nathan's heart into cardiac arrest, diverted his blood supply to the heart-lung machine and began repairing the damage. "There was absolutely no blood anywhere. It looked to be an immaculate perforation," Williams told TIME.

Day 4