2.2: What is Calculus?
This activity is designed to supplement Calculus, Chapter 1, Lesson 4.
ID: 12726
Time Required: 20 minutes
Activity Overview
Students will explore the major concepts of calculus. Students will answer questions and investigate animations in this introduction and overview of calculus. Students will get the big picture of what calculus is about and its various applications.
Topic: Introduction and Overview of Calculus
 Introduce concepts of limit, derivative and integral.
 Brief historical background of calculus and its application.
Teacher Preparation and Notes

This activity is designed to be a studentcentered activity to begin the year of calculus. It can also be used toward the end of the year in precalculus as a preview for what is to come next year. Teachers could also use the animations with their ViewScreen
TM to introduce the key concepts of calculus.  Use the TIConnect or TINavigator software to send the group file to students’ graphing calculators. By using the calculatortocalculator connecting cable, the files can also be quickly and easily distributed to the entire class.
 To download the calculator files, go to http://www.education.ti.com/calculators/downloads/US/Activities/Detail?id=12726 and select the .89i and .89p, files (17 total).
Associated Materials
 Student Worksheet: What is Calculus? http://www.ck12.org/flexr/chapter/9726, scroll down to second activity.
 main.gr1, main.gr2, main.gr3, main.gr4, main.gr5, main.gr6 (89i files)
 main.graph1, main.graph2, main.graph3, main.graph4, main.graph5 (89i files)
 main.pic1, main.pic2, main.pic3, main.pic4, main.pic5 (89i files)
 main.whatcalc.89p
Part 1 – Introduction & Limits
Students will read the information given on their worksheet to become introduced to the major concepts of calculus. This information will then be used to answer questions on the student worksheet. The activity begins with an overview and then transitions to limits.
Solutions
1. Students may have heard a variety of things about calculus, some true and others not so much. This question can be helpful to identify and correct misconceptions.
2. The value of
Part 2 – Derivatives & Optimization
Part 2 transitions to the concept of the derivative. Important calculus terminology is used, including extrema, maxima, minima, neighborhood, and local max and min. Students can use the animation of a 4th degree polynomial to answer questions involving extrema, slope, and local maximum and minimum points.
After viewing each graph using the program whatcalc, students do not need to exit the program. There are no calculations that need to do outside of the program, so they can just select the next menu item when they are ready for that portion of the activity. After students are finished with each graph, they should press ENTER to return to the menu. If students do select 5:Quit from the menu, they will need to start the program again from the Home screen.
Solutions
3. This 4th degree polynomial has 3 extrema.
4. The slope of the tangent at a max or min is zero.
5. a. The approximate maximum volume is
b. With calculus, the exact maximum can be found by finding the derivative and setting it equal to zero.
Part 3 – Integrals & History
Finally the area under the curve is introduced and applications to the Fundamental Theorem of Calculus are discussed.
Solutions
6. The rectangle has an area of 24.
7. The volume is found by rotating the function about
8. Newton and Leibniz independently codiscovered calculus.
9. Sample answer: Limit is what the function is close to when the
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