A team of students must design a hand warmer for a project. The hand warmer must reach and maintain a temperature of 35 °C. They decide on a design process.
What steps are missing from the process? Move words and phrases to the blanks to complete the steps of the process.
Requirement
Positive
result
Problem
Create a
hand
warmer
Decide mixture
of chemicals
and fabrics.
Develop a
prototype.
Negative
result
Design new
prototype.
Test.
Retest.
Must reach
and maintain
35 °C
Conduct
background
research.
Decide on
new fabric
or chemicals.

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