Comments on: Will The Ball Hit The Can? /2009/will-the-ball-hit-the-can/ less helpful Wed, 08 Apr 2009 22:36:53 +0000 hourly 1 https://wordpress.org/?v=6.8.2 By: David Cox /2009/will-the-ball-hit-the-can/#comment-217971 Wed, 08 Apr 2009 22:36:53 +0000 /?p=3266#comment-217971 Dan
My class took a shot and here is what we came up with.
http://tinyurl.com/d9tj6t
Thanks for sharing this. I think I may be able to get a week out of this next year.

]]> By: Questions? /2009/will-the-ball-hit-the-can/#comment-217967 Wed, 08 Apr 2009 22:34:37 +0000 /?p=3266#comment-217967 […] technology 0 Comments So I took a stab at letting my kids have a go at Dan’s last installment. And to say I was pleased is the understatement of the year.  The first obvious question was […]

]]> By: In need of a Base Case » Blog Archive » A good example of what I am talking about /2009/will-the-ball-hit-the-can/#comment-216067 Tue, 31 Mar 2009 20:12:45 +0000 /?p=3266#comment-216067 […] Dan Meyer (a favorite math blogger of mine) recently wrote a blog about “will the ball hit the can” and explained why he likes these types of questions better than what you find in standard […]

]]> By: mathercize /2009/will-the-ball-hit-the-can/#comment-215612 Sun, 29 Mar 2009 16:33:07 +0000 /?p=3266#comment-215612 Thanks for the post, it brought up another question in my mind:
http://mathercize.blogspot.com/2009/03/bouncing-ball-pattern.html

I’m trying to transition from ‘traditional’ teaching style to… well, effective. At any rate, thanks for getting this math-teaching-thing right in a lot of ways.

]]> By: Dan Meyer /2009/will-the-ball-hit-the-can/#comment-215516 Sun, 29 Mar 2009 03:21:58 +0000 /?p=3266#comment-215516 I think I exported the video at fifteen frames per second.

]]> By: David Cox /2009/will-the-ball-hit-the-can/#comment-215482 Sat, 28 Mar 2009 21:56:15 +0000 /?p=3266#comment-215482 Yeah, you are probably right. I have just finished doing standard 23 with my advanced 8th grade class and they have it pretty cold. They get the whole h=-16t^2 +vt +s thing. I am curious as to how far they may be able to go with something like this.

So do you think you will be able to revisit this with your algebra kids, or is this just a “see I told you you could use this stuff” kind of thing?

How much time is elapsed between frames?

]]> By: Dan Meyer /2009/will-the-ball-hit-the-can/#comment-215475 Sat, 28 Mar 2009 21:24:00 +0000 /?p=3266#comment-215475 We had covered parabolas where the axis of symmetry is on the y-axis. Basic stuff. They were starting to ask, “When will we ever use this?” so it seemed appropriate to show them. With Algebra 1 I wouldn’t derive either equation. With physics I would derive the vertical and horizontal components. And with Algebra II I would derive the height equation.

I think.

]]> By: David Cox /2009/will-the-ball-hit-the-can/#comment-215462 Sat, 28 Mar 2009 19:42:19 +0000 /?p=3266#comment-215462 Dan,
What prior knowledge did your students have before you did this activity with them? When you said that you would later have them derive the equations are you talking about the vertical motion (ie, height vs. time) or the actual projectile equations (vertical vs. horizontal)? I think once you have that kid ask, “What if we had the equations of the parabola?”, then you got ’em.

If you haven’t covered vertical motion with your students yet, I have a pretty cool GeoGebra applet. (http://mathcasts.org/gg/student/quadratics/motion/motion_v3.html)

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