Texas Instruments TI-73 - Manual (Page 6)

1
© 1998 T EXAS I NSTRUMENTS I NCORPORATED
Activity 1
The Cookie Caper
Students learn about equivalent fractions by sharing
their favorite cookies.
Number Sense
♦
equivalent fractions
♦
fractions to decimals
Materials
♦
7cm (2¾ in.) poster board circles for
cookies
♦
copies of fractional circles (provided)
♦
shapes of colored paper to represent
chocolate chips, nuts, raisins etc.
(optional)
♦
glue or glue sticks
♦
scissors
♦
markers or crayons
♦
TI-73 
Setup
Before you begin, you or you and your students do the
following:
♦
For each student, cut a poster board circle with a
diameter of 7cm (2¾ in.) to represent a cookie.
♦
Cut out the fractional circles that are provided and
paste one on the back of each poster board “cookie.”
(Some students will have halves, some thirds, some
fourths, etc.)
♦
Cut shapes of colored paper for raisins, nuts, etc., and
glue them to the front of the cookies, or have students
draw their favorite ingredients on the front of their
cookies.
Activity
Have students perform the steps unless otherwise
indicated.
1. After designing the cookies, turn them over and cut
into the assigned fractional parts pre-pasted on the
back.
2. On a sheet of notebook paper, make a diagram of the
cookie circle and the cuts made to make the assigned
fractional parts.