Day 104: Buggy Crashes

Wednesday, 25 January 2017

We started kinematics yesterday. I gave students a tumble buggy, a meter stick, and told them to take their phones with them. I asked them to describe the buggy’s motion in words, in a data table, on a graph, and with an equation.

Today, I asked if they were confident in yesterday’s work. “Yes!” they said. So I asked them to go head to head, predicting the collision point. Here’s one group’s collison:

Prediction: buggies will collide at the little explosion sign in the middle.

A post shared by Megan Hayes-Golding (@megtheteach) on

Most solved by figuring out the position of each buggy at 1s, then 2s, then 3s, then realized buggies would crash between 3 and 4 seconds, so they guessed the rest of the way.

wp-1485396105767.jpg

One group decided to solve in the more elegant way — by solving a system of equations. Finally, we all discussed why our predictions weren’t perfect.

wp-1485396113595.jpg

We had a great two days back and I’m eager to introduce them to accelerated motion.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s