Texas Instruments TI-73VSC Teachers Guide - Page 12

Activity, Part B, Wrap-up, Assessment Suggestions, Extensions

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Number Sense 7 Activity 2: Dice Digits Activity-Part B Individual or Small Group 1. Have each student or pair of students roll dice on the TI-73 to get 4 numbers. 2. Instruct students to use all 4 numbers, any operations, and grouping symbols to write an expression for each of the numbers 1 through 9. 3. Have students check their work on the TI-73 and record each expression on the student activity sheet provided. Wrap-up ♦ Students can exchange papers and check one another's work. ♦ Ask students: Will it always be possible to write expressions for each counting number using the 4 numbers? (no) ♦ Share examples of what students believe to be impossible. Assessment Suggestions ♦ Ask students to write a journal entry summarizing the rules for order of operations. (Refer to "Equation Operating System (EOSé)" in Appendix B of the TI-73 Guidebook .) ♦ Ask students to think of an example of 4 numbers that would make this activity difficult or impossible to complete and explain why. Extensions ♦ Find the probability of getting an "unlucky" roll such as four 1s. ♦ Depending on the level of the students, extend the activity to include exponents, roots, factorials, etc. ♦ As a class, use the 4 digits of the current year to develop expressions that equal the numbers 1 through 100. Display students' work on a bulletin board. © 1998 TEXAS INSTRUMENTS INCORPORATED

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Number Sense
Activity 2: Dice Digits
7
© 1998 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
Activity
—
Part B
Individual or Small Group
1.
Have each student or pair of students roll dice on the
TI-73 to get 4 numbers.
2.
Instruct students to use all 4 numbers, any operations,
and grouping symbols to write an expression for each
of the numbers 1 through 9.
3.
Have students check their work on the TI-73 and
record each expression on the student activity sheet
provided.
Wrap-up
♦
Students can exchange papers and check one
another’s work.
♦
Ask students:
Will it always be possible to write
expressions for each counting number using the 4
numbers?
(no)
♦
Share examples of what students believe to be
impossible.
Assessment Suggestions
♦
Ask students to write a journal entry summarizing the
rules for order of operations. (Refer to “Equation
Operating System (EOS
é
)” in Appendix B of the
TI-73
Guidebook
±
.)
♦
Ask students to think of an example of 4 numbers that
would make this activity difficult or impossible to
complete and explain why.
Extensions
♦
Find the probability of getting an “unlucky” roll such
as four 1s.
♦
Depending on the level of the students, extend the
activity to include exponents, roots, factorials, etc.
♦
As a class, use the 4 digits of the current year to
develop expressions that equal the numbers 1 through
100. Display students’ work on a bulletin board.