Texas Instruments TI-73VSC Teachers Guide - Page 15
Who had the closest estimate?
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10 Using the TI-73: A Guide for Teachers Number Sense 1. Measure the strings. 2. Enter the data in L1 on the TI-73. a. Display the List editor. 3 b. If necessary, clear L1. $ to highlight L1 : b c. Starting at the first line in L1, enter the string lengths. (You'll get an error if L1 is still highlighted.) Press b after each list item. 3. Find the mean of L1. a. Return to the Home screen. - l b. Access the - v MATH menu and select mean. - v " " [ c. Calculate the mean of L1. - v Y E b 4. Inform students that the average small intestine is 6m (20 ft.) long. Ask: Was the mean you found close to 6m (20 ft.)? Who had the closest estimate? Which estimate was off the farthest? What are some objects that are 6m (20 ft.) long? If all the strings were connected together, how long do you think they would be? Á Find some objects 6m (20 ft.) long that students are familiar with in your local area. 5. Find the sum. a. Return to the Home screen. - l b. Access the - v MATH menu and select sum. - v " " J c. Calculate the sum. - v Y E b © 1998 TEXAS INSTRUMENTS INCORPORATED