Activity 3—A Speedy Slide (cont.)

Parabolic

 

 

c.Select Edit (press q) to open the Sample Interval dialog window.

d.Enter 0.2 to set the time between samples in seconds.

e.Select Next (press q) to advance to the Number of Samples dialog window.

f.Enter 25 to set the number of samples. Data collection will last for 5 seconds.

g.Select Next (press q) to display a summary of the new settings.

h.Select OK (press s) to return to the main screen.

ÍTake your preliminary data-collection positions.

a.One member of the group should first go up the slide steps and sit at the top of the slide.

b.A second person, while holding the CBR 2™ motion detector, should go high enough on the slide steps to hold the CBR 2™ motion detector behind the person who will slide.

c.The third person should stand on the ground next to the slide, while holding the calculator and interface.

ÎTake your final data-collection positions.

a.The slider, while holding on, should move forward enough to allow a 15-cm distance between his or her back and the CBR 2™ motion detector.

b.The person holding the CBR 2™ motion detector should hold the CBR 2™ motion detector steady and aim it at the slider’s backside.

c.The person holding the calculator and interface should move to a comfortable position that does not cause a pull on the CBR 2™ motion detector cable.

ÏCollect data.

a.Select Start (press q) to begin data collection.

b.The slider should begin to slide as soon as a clicking is heard.

c.When data collection is done for this trial, the person with the CBR 2™ motion detector should come down to the ground.

Caution: No student should attempt to pass another person while he or she is on the steps.

20 GETTING STARTED WITH THE CBR 2™ SONIC MOTION DETECTOR

© 2000 VERNIER SOFTWARE & TECHNOLOGY

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Texas Instruments CBR 2 manual Activity 3-A Speedy Slide Parabolic
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CBR 2 specifications

Texas Instruments has long been a prominent player in the field of educational technology, and the CBR 2 (Calculator-Based Ranger 2) is a testament to their commitment to enhancing the learning experience, particularly in the realms of mathematics and science. Designed to complement graphing calculators, the CBR 2 is a versatile data-collection device that empowers students and educators to explore real-world phenomena through hands-on experimentation.

One of the main features of the CBR 2 is its ability to capture a wide array of data through various sensors. The device is equipped with an array of built-in sensors that can measure motion, including speed and distance. This makes it an invaluable tool for physics experiments, allowing students to visualize concepts such as speed, acceleration, and trajectory.

The CBR 2 utilizes ultrasonic technology to detect distance through sound waves. This feature enables students to conduct experiments that demonstrate principles of sound and motion in a tangible way. With a range of up to 6 meters, the CBR 2 provides accurate and reliable measurements that can be graphically represented using compatible Texas Instruments graphing calculators.

The device is highly user-friendly, with simple interfaces that allow users to easily collect and analyze data. The integration with graphing calculators simplifies the process of data visualization, enabling students to create graphs in real time as they conduct experiments. This capability is particularly beneficial in encouraging interactive learning and fostering a deeper understanding of scientific principles.

The CBR 2 is designed to be portable and durable, making it suitable for classroom settings as well as outdoor experiments. Its compact size and lightweight construction ensure that it can be easily transported, allowing educators to take learning beyond the confines of the classroom.

The CBR 2 also supports various modes of data collection, including Event Mode, which allows users to trigger data collection based on specific events. This feature is useful in demonstrating concepts such as projectile motion and collisions, providing students with hands-on experience that enhances their learning.

In summary, Texas Instruments' CBR 2 is a powerful educational tool that enables students to collect, analyze, and visualize data in an engaging manner. With its built-in sensors, ultrasonic technology, and seamless integration with graphing calculators, the CBR 2 stands out as a versatile device that enriches the educational experience. It not only provides a platform for conducting experiments but also cultivates critical thinking skills and a deeper understanding of scientific concepts, preparing students for a future in STEM fields.
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