## Reflection: Lesson Planning Trigonometric Graphs (Day 2 of 3) - Section 2: Exploring Transformations

I like using Desmos application. It allows students to change the scale to be in terms of pi and if they have Internet access students can do the activity at home.

In the past I have used TI-84's and the Transform App. The main issues students have with this application is that they must use y and x instead of t and f(t). Also the graphs will have all scales in decimal form so students must be aware that pi/2 is approx 1.57.

Since I teach calculus, I usually work in radians. You can work this activity in degrees you will just need to change some of the directions for changing the window.

For me it is important that the students explore the transformations in some manner not the tool that is used. If I only have my computer available, I would do this activity as a class having different students move the sliders and see what is happening to the graphs.

Lesson Planning: Technology Adjustment

# Trigonometric Graphs (Day 2 of 3)

Unit 8: Graphing Trigonometric Functions
Lesson 2 of 13

## Big Idea: Through the use of technology students discover how transformations of trigonometric functions are like the transformations of previously studied functions.

Print Lesson
Standards:
30 minutes

### Katharine Sparks

##### Similar Lessons

###### Graphing & Modeling with Exponents
Algebra II » Exponents & Logarithms
Big Idea: How high will the basketball bounce and will it ever stop? An exponential model sheds light on the question!
Favorites(3)
Resources(22)
Fort Collins, CO
Environment: Suburban

###### Radioactive Decay and Nuclear Waste
12th Grade Math » Exponential and Logarithmic Functions
Big Idea: How long it will take for radioactive waste to reach a safe level?
Favorites(11)
Resources(19)
Troy, MI
Environment: Suburban

###### Comparing Rates of Growth
Algebra I » Functions
Big Idea: Which company will make more profit? Students compare and contrast a linear growth model and an exponential growth model. They work with a variety of representations to determine when the two companies will have the same amount of money.
Favorites(0)
Resources(15)
Boston, MA
Environment: Urban