Groups then collected data to get how many centimeters per knot.

As a class we took each group rates and averaged them to get a class rate per knot. We decided on the question shown on this whiteboard.

And some of my work to consolidate with the students how to use the equations to solve this problem.

This is what it looked like when we tied the 30 knots in each of the ropes.

And here is a close up of the lengths.

Of course I could knot resist and we decided to look at figure 8 knots.

It took a little while for groups to figure out figure 8 knots. Data collection from various groups.

The class average.

And some student work.

Knotted up for equal lengths!!!!!

Great activity Alex! Totally stealing for my 1P class. Love activities like this where kids actually experience the rate of change and see the result.

ReplyDeleteWhen I was still in the classroom I used to do this activity and loved it. Here is the last set of data I collected

ReplyDeletehttps://docs.google.com/spreadsheets/d/1SZF7vioEXkVDhKfiuNFz2YCRRN51Ig4o4xGlRmyvi9w/edit?usp=sharing

Thanks for sharing David. Much appreciated.

DeleteLove this activity!

ReplyDelete