Cell phone traffic
In this Science Update, students explore what scientists have to say about people making cell phone calls when they are stuck in traffic. Bill Knee of the National Transportation Research Center at Oak Ridge National Lab believes that the ever-present cell phone can change that. He and his colleagues are testing a system that uses cell phone signals to monitor traffic flow. Because cell phones have to self-orient with towers, it is possible to estimate travel time between zones, which, when the information is fed into computers, allows researchers to monitor the rate traffic is moving. Science NetLinks provides a link to the audio file, a written transcript, and questions to engage students in discussion about cell phone technology, traffic patterns, and other uses for similar technology. This activity also contains links to How Stuff Works and web resources that use unused computing time to do scientific research.
North Carolina Curriculum Alignment
Science (2005)
Grade 6
- Goal 1: The learner will design and conduct investigations to demonstrate an understanding of scientific inquiry.
- Objective 1.01: Identify and create questions and hypotheses that can be answered through scientific investigations.
- Objective 1.05: Analyze evidence to:
- Explain observations.
- Make inferences and predictions.
- Develop the relationship between evidence and explanation.
- Objective 1.08: Use oral and written language to:
- Communicate findings.
- Defend conclusions of scientific investigations.
- Objective 1.09: Use technologies and information systems to:
- Research.
- Gather and analyze data
- Visualize data.
- Disseminate findings to others.
- Objective 1.10: Analyze and evaluate information from a scientifically literate viewpoint by reading, hearing, and/or viewing:
- Scientific text.
- Articles.
- Events in the popular press.
- Goal 2: The learner will demonstrate an understanding of technological design.
- Objective 2.01: Explore evidence that "technology" has many definitions.
- Artifact or hardware.
- Methodology or technique.
- System of production.
- Social-technical system.
- Objective 2.03: Evaluate technological designs for:
- Application of scientific principles.
- Risks and benefits.
- Constraints of design.
- Consistent testing protocols.
- Objective 2.01: Explore evidence that "technology" has many definitions.
Grade 7
- Goal 1: The learner will design and conduct investigations to demonstrate an understanding of scientific inquiry.
- Objective 1.01: Identify and create questions and hypotheses that can be answered through scientific investigations.
- Objective 1.05: Analyze evidence to:
- Explain observations.
- Make inferences and predictions.
- Develop the relationship between evidence and explanation.
- Objective 1.08: Use oral and written language to:
- Communicate findings.
- Defend conclusions of scientific investigations.
- Objective 1.09: Use technologies and information systems to:
- Research.
- Gather and analyze data.
- Visualize data.
- Disseminate findings to others.
- Objective 1.10: Analyze and evaluate information from a scientifically literate viewpoint by reading, hearing, and/or viewing:
- Scientific text.
- Articles.
- Events in the popular press.
- Goal 2: The learner will demonstrate an understanding of technological design.
- Objective 2.01: Explore evidence that "technology" has many definitions.
- Artifact or hardware.
- Methodology or technique.
- System of production.
- Social-technical system.
- Objective 2.03: Evaluate technological designs for:
- Application of scientific principles.
- Risks and benefits.
- Constraints of design.
- Consistent testing protocols.
- Objective 2.01: Explore evidence that "technology" has many definitions.
Grade 8
- Goal 1: The learner will design and conduct investigations to demonstrate an understanding of scientific inquiry.
- Objective 1.01: Identify and create questions and hypotheses that can be answered through scientific investigations.
- Objective 1.05: Analyze evidence to:
- explain observations.
- make inferences and predictions.
- develop the relationship between evidence and explanation.
- Objective 1.08: Use oral and written language to:
- Communicate findings.
- Defend conclusions of scientific investigations.
- Describe strengths and weaknesses of claims, arguments, and/or data.
- Objective 1.09: Use technologies and information systems to:
- Research.
- Gather and analyze data.
- Visualize data.
- Disseminate findings to others.
- Objective 1.10: Analyze and evaluate information from a scientifically literate viewpoint by reading, hearing, and/or viewing:
- Scientific text.
- Articles.
- Events in the popular press.
- Goal 2: The learner will demonstrate an understanding of technological design.
- Objective 2.01: Explore evidence that "technology" has many definitions.
- Artifact or hardware.
- Methodology or technique.
- System of production.
- Social-technical system.
- Objective 2.03: Evaluate technological designs for:
- Application of scientific principles.
- Risks and benefits.
- Constraints of design.
- Consistent testing protocols.
- Objective 2.01: Explore evidence that "technology" has many definitions.



