- 2 hours-ish of work -
I like to hunt down my friend Matt at school everyday and bug him with math ideas which led us to this drawing yesterday. There's lots of good stuff on that board... but let me tell you how I got there first.
Like I said in my previous post, I was going to start planning the first couple of days of this project to see where it took me. This is what it looked like.
The "big thing" is where I got stuck... which leads me back to the whiteboard with Matt.
How do we talk about slope at this point?
Here are the ideas came to mind.
- They should understand slope and y-intercept in slope-intercept form before moving on.
- They should understand slope in point-slope form before moving on.
- They should just play with x's and y's and see what they come up with.
- I should give them the slope-intercept form and tell them to play with the numbers in front of x and the number at the end to make the line work.
My gut tells me to go with #3... but I'm kind of afraid of a kid doing something like 2y=x. We obviously can work with this, but would this make it more difficult for them later? My other gut tells me to go with #4. What's the harm? Or maybe it's both? At this point, I don't really care if they really understand what slope is. I just want them to see how that number in front of x affects the line and how that number on the end makes the line move up and down. I want a neurological connection between whatever parts of the brain do those kinds of things.
I think this is good enough for now. I will revisit this idea later.
that's interesting man...
I kind of like this part of the whiteboard picture because I was wondering, if y= makes horizontal lines and x= makes vertical lines... would it make a slanted line if you mixed them together somehow? Matt looked at me like I was crazy.
This is how I'm going to tie what equations look like to what equations can describe. More on this later...