|
|
|
Lesson Objective: Students will be using the fraction keys on the TI-15 to learn how the calculator simplifies fractions, looking for the greatest common factor, and then trying to simplify fractions by using the greatest common factor.Supplies and Materials:
Show students how to enter a fraction using the Show students how to simplify the fractions and notice whether the fractions can be simplified. Give students several fractions to simplify. As students simplify the
fractions they are to decide and record what factor the calculator used to
simplify the fraction. They are to repeat this step until the fraction can no
longer be simplified anymore. Ask students to use the factors to find the greatest common factor of the numerator and denominator. Students are to study your chart carefully and think about:
The students will be asked to try some additional fractions, but this time
they will be trying to simplify the fraction using the greatest common factor.
The students are to write down their guess at the greatest common factor and
then use the Simp key with the greatest common factor to simplify the
fraction. If the The students with the lowest score should be recognized for being able to simplify fractions using their greatest common factor.
|
and 
keys.
then
the fraction is simplified. They score 1 point. If it doesn’t disappear they
must enter a second greatest common factor by pressing Simp and the
second greatest common factor. They should record their score as 2. Hopefully
they will get the fraction simplified in one or two steps. If they not they
score three points.