alice-teacher events without if statements

[Sharick, Edward]

James,

Here's a possible idea if you don't want to teach if statements yet.  You could always give them starter code that has the keys defined and for each key press you call some method. Then they would just have to program the methods that are called but wouldn't have to even look at the initializeEventListeners method. I don't know what topics exactly you were going to teach but I sometimes do this to avoid talking about topics that I haven't taught yet and don't want to talk about yet.

-Eddie Sharick
________________________________
From: alice-teachers <alice-teachers-bounces+sharicke=tesd.net at lists.andrew.cmu.edu> on behalf of Don Slater <don at alice.org>
Sent: Tuesday, February 18, 2020 12:36 PM
To: Alice Teachers <alice-teachers at lists.andrew.cmu.edu>
Subject: Re: alice-teacher events without if statements

This message was sent from outside the Tredyffrin/Easttown School District.

James,
It seems that I have been nothing but a disappointment to you this week. There really is not a way that I have found to implement the functionality that you are looking for.

Perhaps the community has thoughts?

All the best,
Don Slater

Alice Project

On Feb 17, 2020, at 3:08 PM, Vanderhyde, James <vanderhyde at sxu.edu<mailto:vanderhyde at sxu.edu>> wrote:

In Alice 3, is there a way to handle different key events before introducing if blocks? In Alice 2, we used to use a separate event for each key, and then call a method. In Alice 3, I have to use “if event isKey(key)” in an if structure in order to call separate procedures for separate keys. (See screenshot.) Is there another way? I wanted to delay teaching if blocks just a little longer.

James
—
James Vanderhyde
Associate Professor and Department Chair
Computer Science
Saint Xavier University
3700 W. 103rd St.
Chicago, IL 60655
773-298-3454
<screenshot.png>
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