Using Two Truths and a Lie in Calculus Class

Curve Sketching is a topic that Calculus students need to practice over and over again.  So, I decided to give them some practice by using this fun idea that I originally found on the Math = Love blog {Math = Love Two Truths and a Lie}

First, the students and I played a quick round of two truths and a lie as a small icebreaker.

For example, I made these three statements about myself.

1) I graduated from the University of Illinois.
2) I played the oboe in high school.
3) I lived in Hawaii for a year.

My students know me pretty well, so they quickly figured out that I never lived in Hawaii :)

Then I gave each set of partners a copy of the Two Truths and a Lie form.  Students could do this activity by themselves, but I thought for a first effort maybe partners would work better.  This form is specifically geared toward this particular Curve Sketching activity, but it could easily be changed to target whatever topic you want.

I decided to give my students an equation to work with.  This way, I could target a couple of groups with some more difficult equations.  But, you could easily just tell students they have to come up with their own equation.

I told students they need to use words like maximum, minimum, increasing, decreasing, concave up, concave down, and point of inflection in their 3 statements.  I did allow students to use their calculators to check their work.

Here is an example of my work:

Finally, after each group was finished, I had them fold up the bottom of their paper so other students couldn't see it.  We had a gallery walk around the room and students had to identify the lie on all of the other group's papers.

This was a really fun activity and I hope to incorporate this activity into other topics in some of my other classes!

{Do you like this idea?  If you would like to purchase the forms and equations used in this activity, please visit my TPT store at: Two Truths and a Lie Curve Sketching}

Want to see more Teaching Math Tips?

Subscribe to get the Teaching High School Math Newsletter

We won't send you spam. Unsubscribe at any time. Powered by ConvertKit

No comments

Post a Comment