# Activities

• • • ##### Subject Area

• Math: PreAlgebra: Equations
• Math: PreAlgebra: Expressions
• Math: PreAlgebra: Linear Functions
• Math: PreAlgebra: Nonlinear Functions

• ##### Author 6-8

50 Minutes

• ##### Device
• TI-73 Explorer™
• TI-83 Plus Family
• TI-84 Plus
• TI-84 Plus Silver Edition
• TI-Navigator™
• ##### Software

LearningCheck™ Creator
TI Connect™

• ##### Accessories

TI Connectivity Cable

• ##### Other Materials
TI-73
TI-Navigator™
Vocabulary development worksheet
Similarities and Difference generic worksheet
• ##### Report an Issue

Exploring Basic Equations

#### 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.