Last week I shared my y-intercept slider. This week I'd like to share my Slope Spinner.
INB Slope Spinner from Nora Oswald on Vimeo.
You will need:
8.5 x 11 card stock
I started by gluing the white paper to the card stock. You only need glue where the graph and arrow are located.
With the safety pin, poke a hole in the center of the arrow (I placed a dot there) and the graph paper.
Put the brad through the arrow first, then the graph paper and open the "arms" in the back.
I found it helpful to place a dot in my notebook where the arrow was pointing and then write the slope.
Cut the corners of your graph so that the arrowheads don't get caught on them (you can see them catching in my video).
I didn't put axes on the graph paper because I didn't want my students to think that a line needed to go through the origin to have a slope.
Definitely ask the students to point out any patterns that they notice.
I was trying to come up with something that incorporated both my y-intercept slider and my slope spinner, but everything I was trying to do was too complicated. I suppose I'll leave that to computer animation......for now.