Published on 06/09/2008

#### Activity Overview

Students will explore equations with constants, variables, and exponents.

#### Before the Activity

Download the attached EDC file and send to student calculators. If needed, make copies of the spreadsheet pages.

#### During the Activity

First:

Start by giving the students the vocabulary worksheet. Have the student try to define what each word means in their group, without looking at a text or a dictionary. Discuss with the students the vocabulary.

Second:

Give the students the actual definition of the words or have them look them in their text.

Have a discussion of what these words mean. Have them draw their representation of the each word. What they think of when they hear the word.

Third:

On the worksheet labeled "Similarities and Differences" have the student write down the similarities and differences of:

Variables, constant and exponents

Expressions and equations

NOTE: A Venn Diagram works great for this activity as well.

Fourth:

In TI-Navigator™, go to Activity Center and Send the following equations separately to the students. Have the students try to match the equation as well as find a line that is parallel.

y=2x

y=x

y=3x^2

y=x^2

y=3

y=2

y=-1

Have the student fill out a similarities and differences worksheet for the graphical representation. Make sure you give time for discussion of the what each student has found.

Fifth:

Set up the background of Activity Center with the background picture being the Golden Gate Bridge. Have the students find the line matching the base of the bridge. Have a discussion with the student about angle of the picture.

Why is the angle important?

Would you get a different equation if you had a different angle?

Could the equation be a constant?

Is the graph linear, a parabola or a constant?

Could it be anything else?

Where else could you see this similarity?

#### After the Activity

After the activity, you can complete the 'similiarity and difference' form or give the five question LearningCheck™ quiz. Both are benefitial.

Another option would be to complete the similarity and difference form for homework and just give the five question quiz.