This document discusses using design-based investigations in science education. It outlines the design process, which involves identifying the problem context, researching the topic, developing ideas, building models, and testing/getting feedback to refine subsequent iterations. The goal is to solve problems through applying science concepts. Design projects follow procedures that vary from the scientific method but can still effectively build understanding and allow assessment of student learning.

1. Investigation Through Design
Often, student investigations are not simply created to find an answer to a question, or to explore
some phenomenon. Rather, science is often used to create solutions to problems through application of
scientific concepts and principles to a real-world situation. This is the work of applied science and
engineering.
This activity is designed to examine aspects of a design-based investigation as a strategy for learning
and exploring different phenomena. Design projects often take on a different set of procedures that
vary somewhat from the standard “scientific method” to which we are all so accustomed. Often, such
projects may appear to be very much like the investigations we have all focused on as a way to support
authentic student learning. However, there are some significant differences in the process. The
following materials are intended to help you better understand the Design Process, and how you might
consider using a design activity as a way to build understanding and assess student learning,
The Design Process
Design is a process that we use to solve problems, whether we are cognizant of the process or not. We
often try coming up with processes, solutions, etc. without really thinking through all possible ways to
address a problem, and then actually try things out. Sometimes we succeed in what we want to
accomplish; most of the time we don’t. When we don’t, we usually tinker with something and try it
again, or, ideally, try to learn a bit more about the situation or issue we are trying to address, then
tinker and see what happens.
In science and engineering, there is a more formal process that takes place, but it is still very similar in
process to what we do. In a classroom, this process can be represented by the diagram below. Design is
a cyclic process that involves research, concept development, design and building, and testing or
feedback. Each iteration is intended to help refine the process or add a new factor to consideration in
the design. These steps are outlined in detail on the following page:
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2. 1. Identify and Define Design Context.
This is the initial step in any design project, and one that you will want to address specifically with
students at the outset of any project. This is also, most likely, going to be developed by you, the
teacher, for any project you have students do in the classroom. This includes the following:
• Identifying the goals of the product. What is it supposed to do or accomplish? (What is the
function of the item?)
• Identify the context for the product. Are there specific needs or conditions that you need
to work with for the product?
• Define the design goal/outcome. State what you are creating, what you will develop to get
there, and what the intended outcome is. This also identifies the guidelines for assessment of
the success of the design. This might also address the form of the product, which is what it
should look like.
• Define the context and conditions for the design. What are the constraints that you are
working with to complete the design? These might include time, personnel, resources or
supplies, and other constraints about the use of the product.
2. Research and Learn New Content.
Like the student investigations we addressed earlier in this program, one of the critical steps before
the actual design or investigation can be done is to gather information and build understanding of
content relevant to the design. This may take the form of benchmark lessons that you, the teacher,
lead to help build a common foundation of knowledge and understanding among all students, or it may
be individual or team research that students undertake to gather information and ideas about the
problem.
This research can also focus specifically on the product itself and not just the conditions for the design.
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3. Research might examine the following:
• Existing Designs. What have others designed or considered in the past?
• Conditions for Use. Where will the product be used and for what purpose?
• Components. What parts make up the product?
• Materials. What will the product be made of? What do we need to know about this?
Often, a design might include many cycles, each of which is intended to look at a different aspect of a
problem. For instance, design of a building might first include design for the basic structure, but then
address a different factor, such as heating/cooling, energy, or lighting in the next iteration of the
design. Doing this can often help you specify what benchmarks and content you need to address with
each cycle.
3. Develop Personal or Team Ideas.
This is where students can generate ideas about the design based on the information gathered in the
first two steps. You may wish to incorporate an individual brainstorming activity first, so that all
students can get ideas on paper. Something as simple as a bulleted list of considerations can be useful
here. Then, if working in groups, it can be useful to have a group “brainstorming/editing” activity
where ideas from individuals are shared and refined or modified into a group list of ideas. This two-
step strategy can often help groups develop better, more thorough lists of ideas, whereas moving
immediately to the group can result in ideas only being generated by the more dominant personalities.
Often, students want to immediately jump to this step, and so it is often useful to have a quick set of
questions for any students to address at this point about their design ideas. Asking how the questions
identified in steps 1 and 2 are addressed by their ideas can help students better understand the
importance of these issues.
4. Design and Build Models or Artifacts.
This is the step where students will actually design the product, or some model of the product. This
can include tangible three-dimensional objects, or sketches or drawing that are very clear about the
design considerations, dimensions, or other factors in the design. Build in time for such activities, and
if groups are involved, the time on task and nature of the task should “fit” the number of people
working on the task.
5. Feedback Activities: Testing, Critiquing, and Pin-ups.
The intent of this final phase of the design process is to gather feedback that will become the
information from the actual model or artifact created that is used in the next cycle of the design. This
feedback can be generated in a variety of forms, and may include the following activities, individually
or grouped together to provide such feedback.
• Scientific testing. This would include performing any tests or experiments to ensure that the
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4. artifact works for the conditions provided, and to identify any possible problems which might
exist that could be addressed in the next iteration of the design cycle. This is a good
opportunity to focus students on data collection and observations.
• Usability / Feasibility testing. While the above item is intended to deal with the scientific
phenomena that are addressed in the project, one of the other aspects of building an item to
solve a problem is doing any testing for usability. For instance, you could design a tool to
address a specific problem, but if the materials to build that tool cost more than alternative
solutions, it is not likely to be considered as the final design. This type of testing is likely to be
done by analyzing data or making observations about the creation of the object, rather than
specific testing of a variable using scientific means.
• Critiques. This can take many forms, but the main goal is to get subjective feedback about
the design that might be used to enhance the design in the next cycle. When working with
students, it it important to frame such feedback in a constructive manner that is not
judgmental of the designer, but rather focuses on aspects of the design. It can often be
helpful to use a set of guiding questions that are generated by you, experts, and/or the class.
• Pin-ups. This is a specific form of critique that is used often in design fields, such as
engineering and architecture, especially when working with sketches or drawings of an object.
This strategy has students post their drawings of the design on the wall around the room,
inviting feedback from others. The feedback can be provided on note cards that everyone
completes during a walking review of each item, a poster sheet next to each design inviting
comments, or verbal feedback if the designer is present. If structured well, you can actually
invite students to sketch new suggestions on the design itself. The pin-up method is often a
relatively quick way to provide feedback and opinions from others, especially if early in the
design process.
• Presentations. Another way to solicit constructive feedback can be to have each design be
presented to the rest of the group. This can provide considerable feedback if students are
used to verbal critique, but is usually a time-intensive process that might be reserved for the
final design, else it can drag out the design process considerably.
The design cycle then begins again, though the difference is that the second (and all successive)
iteration actually has a design to work with. As a result, steps 1 and 3 are often much shorter in the
process, and more attention is paid to the design, model, and critique.
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5. Design as a Learning Strategy
Introducing a design project in a class can be challenging and time consuming for all involved, but can
be truly beneficial to students in a variety of ways. The following aspects of design are very useful to
further student learning, and are worthy considerations if you are debating use of a design project in
your classroom.
• Design is Purposeful. Students are often asking about the relevance of a particular topic.
Using a design-based project often provides a very clear picture of how the topic being studied
can relate to real life practices. This can also provide an anchor for you as a teacher as a clear
“end goal” of a project if you are designing the curriculum yourself.
• Design is Deliberate. People donʼt design something by chance, unlike the process of
observation. Because of this, design has a natural iterative cycle that is often used to carry
out the purpose of the design. This cycle can provide an organization process and habits of
mind for students that encourage higher-order thinking skills. Often, design is viewed as a
particular strategy for problem solving, which is so often mentioned as a skill lacking in many
students.
• Design is Creative. Unlike scientific investigation, which can be extremely focused on
method and procedure to ensure scientific validity in results, design allows students to flex
their creative muscles in a way that is not often presented in science classes. Students enjoy
this creativity, and this can be a great way for teachers to also practice facilitation (as opposed
to direct instruction), as design projects make it extremely hard to be teacher directed. For
this reason, a design project might be a particularly effective way to encourage a teacher who
struggles with an inquiry approach to instruction to “let go” and focus more on student work
and less on “correct answers”.
• Design is Naturally Collaborative. Unlike finding a scientific fact or truth, design is an
applied task that does not have a correct answer. Rather, it requires compromise from all
involved. The review process necessary for effective design requires feedback for others. As a
result, design tasks often encourage effective collaboration toward an end, though this is one
area where effective facilitation skills are necessary to ensure that feedback is appropriate and
constructive, and that the design process itself, when done in groups, is collaborative in
nature.
• Design is Complex. Unlike scientific investigations that are often seeking to isolate
variables, design often has to deal with multiple variables at one time for a workable solution.
While this can, at times, be to the detriment of student understanding (if they havenʼt worked
out how all of the factors work together, or how the science of a set of factors actually works),
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6. it also can get students to begin thinking in systems, rather than individual factors.
• Design Can Fail... And thatʼs okay! Once of the main criticisms of modern instruction in
math and science in the U.S. is that we often focus on just getting the correct answer, and that
coverage of content standards in a short time limits the ability of students to learn from
failure. But, the point of the design cycle itself, and the reason we can go through the cycle
many, many times, is because we can EXPECT failure. What we want is to encourage finding
failure and learning from it, preferably early in the process, so that we donʼt get the tragedies
of projects that have not been thoroughly tested. (think Space Shuttle or Hindenburg, among
others).
• Design is More Authentic. The process of design actually is much closer to the ways in which
we all think, and the ways in which scientists working with authentic problems develop
practices that lead to discoveries. What better way to illustrate to students the kind of work
that an engineer orequiring a design solution.
MMSTLC Science Resources (10/07) 1.4 Design-based Student
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