alice-teacher Probably an easy question

[Michael L Owen]

Here is a different option. Trickier [😉]

Nike Owen
________________________________
From: alice-teachers <alice-teachers-bounces+mrgrog=outlook.com at lists.andrew.cmu.edu> on behalf of Roger Crowe via alice-teachers <alice-teachers at lists.andrew.cmu.edu>
Sent: Tuesday, November 15, 2016 12:00 PM
To: Alice educators
Subject: Re: alice-teacher Probably an easy question

One additional note: one of my students came up with putting an additonal object off camera opposite the wheeledrobot and had the head Turn to face the object.  We even tinkered with the opacity of the object just in case it would at some point come into view.  I thought it was an interesting work around.

On Tue, Nov 15, 2016 at 12:57 PM, Roger Crowe <roger.crowe at spart5.net<mailto:roger.crowe at spart5.net>> wrote:
Hey Don,

Thanks for your help.  We are using Alice 2.4, Slow and Steady Alice.  I've never understood why there are 2 applications included but for whatever reason we've always used Slow and Steady.

Thanks for your help!


On Tue, Nov 15, 2016 at 12:29 PM, Donald Slater via alice-teachers <alice-teachers at lists.andrew.cmu.edu<mailto:alice-teachers at lists.andrew.cmu.edu>> wrote:
This is interesting…

It turns out, what I also assumed was the front of the SpiderRobot’s head is oriented differently than the body of the spider robot. And it turns out, this has been true for a long time in Alice (I just tested a version of the robot from Alice 2.2, released in 2009)…

As often as this exercise and this model has been used, it is surprising that we have not caught this before this (at least, I do not remember it coming up before this)…

I have attached a screen shot to illustrate. The image has two spider robots, and two axes, i have set the point of view of the first axes to the entire spiderrobot on the left, and I have set the point of view to the second axes to the head of the spider robot on the right.

Thank you for pointing this out…

All the best,
Don Slater

Alice Project


[cid:DCF246D3-CA0E-4524-AC67-F430520C76F1 at wv.cc.cmu.edu]

On Nov 15, 2016, at 11:35 AM, Roger Crowe via alice-teachers <alice-teachers at lists.andrew.cmu.edu<mailto:alice-teachers at lists.andrew.cmu.edu>> wrote:

I've taught this lesson before but now an Alice object seems to be acting differently. In Alien Encounter the spider robot's head, which I thought the red visor was actually the front of, when told to Turn to Face the wheeledrobot, points the back of his head (opposite the red visor) to the wheeledrobot.

If I ask the entire Spider robot to Turn to face the wheeled robot, the red visor and the body point to the wheeledrobot.

What am I missing here?


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