Texas Instruments TI-73TP Teachers Guide - Page 10
Dice Digits
UPC - 033317197736
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5 Activity 2 Dice Digits Students use 4 numbers, any operations, and grouping symbols to write mathematical expressions that are equal to each of the numbers 1 through 9. Number Sense ♦ order of operations ♦ mental math ♦ basic computation Materials ♦ student activity sheet (provided) ♦ transparency of activity sheet ♦ TI-73 ³ Setup If your TI-73s have not been used for random number generation prior to this activity, you and your students need to store an integer "seed value" to rand in each TI-73. With each rand execution, the TI-73 generates the same random-number sequence for a given seed value. The TI-73 factory-set seed value for rand is 0. To generate a different random-number sequence, store any non-zero seed value to rand. Á If you do not enter a seed value, rand uses whatever value happens to be the current seed. If there is no seed, it uses the factoryset value of 0. 1. Enter the number you want for your seed value. Have students use different seed values. (In the example shown at the right, 1 is used.) 2. Now press X 1 " " 1 b 1 " " 1 b b. (For more information about seed values, refer to the "1 Probability Menu" section in the Math chapter of the TI-73 Guidebook .) Á If you want to restore the factory-set seed value, store 0 to rand or reset the defaults. © 1998 TEXAS INSTRUMENTS INCORPORATED