Introduction to the Calculator Based Ranger (CBR)

Equipment Needed TI Graphing Calculator (73, 82, 83, 83+, 84, 84+, 92, 92+) Calculator Based Ranger (CBR) Calculator-to-Calculator Cable

Other Helpful Equipment Overhead Projector and TI ViewScreen (so all students can see the menus, graphs, and results, and interact more) TI Connect (to copy graphs generated by using the CBR and insert them into other documents)

Conic Distribution of Sound “Clicks” The CBR is a motion detector that emits and collects a three-dimensional sound wave. Minimum Recommended Distance Maximum Recommended Distance

Set-up Possibility #1 Plug one end of the cable into the bottom of the TI Graphing Calculator. Plug the other end of the cable into the Calculator Based Ranger (CBR). This set-up is best for individual or team use.

Set-up Possibility #2 Use a TI Graphing Calculator that is equipped to work with a ViewScreen. Connect the CBR to the calculator and the calculator to a ViewScreen. This set-up is best for teacher demonstration.

Set-up Possibility #3 Collect data using the CBR and then connect to a graphing calculator to upload data. This set-up is best when the cord and calculator could be in the way or awkward to hold.

Start Using the CBR Now that you know how to set up the equipment, you need to make another decision. Either… point the CBR at a stationary object and the user moves with the CBR, or the user or another object (like a ball) moves in front of the CBR.

Buttons you will use: ON ENTER APPS Arrows

Steps Part 1: Select “ON”. Select “APPS” and you will see a screen similar to the one shown. Choose “CBL/CBR” and press “ENTER”. Follow the screen direction (Press ANY Key) to move to the following screen. Then, choose option “3:RANGER”.

Steps Part 2: The next screen should be like the one on the right. Then, press the “ENTER” key. Next, you will see the “MAIN MENU” screen. Choose “1:SETUP/SAMPLE” and press “ENTER” to arrive at the following set of options.

Steps Part 3: Select the options as you see fit for the experiment. Arrow through the options and press “ENTER” to change the selection. Arrow up to “START NOW” and press “ENTER”. The next screen will be one of the following two. The second is an error – make sure your cables are properly connected.

Steps Part 4: Once the CBR and TI are “speaking” with one another and you select “ENTER”, you will hear a series of clicks. The lights on the CBR will also flash green. Begin moving the CBR or the object depending upon the experiment. When the green lights turn off, the CBR is no longer recording data. If you selected “REALTIME: YES”, it will draw the graph in real time. If you selected “REALTIME: NO”, it will transmit and then draw the graph.

If at first you don’t succeed… If your attempt is not the same as the intended graph, you can try again by pressing “ENTER” then choosing “3: REPEAT SAMPLE”. AttemptIntended try, try again.

Distance match (APPLICATIONS) Constant Horizontal Parabolic Peak Stair StepWave Butte Under “APPLICATIONS” students can try to match various distance graphs, velocity graphs, and a ball bounce.

Graph Analysis By using “TRACE”, you can identify various features of a function. When using “REALTIME: NO”, 4 data sets are transferred to the lists and can be further analyzed or applied. L1 = Time L2 = Distance L3 = Velocity L4 = Acceleration

Be Creative! Start simple and most of all have fun! There are several ideas on my website to get you started, but remember to be creative! Try changing the object that is moving or the parameters of its movement.

After All… Newton would have LOVED the CBR!