Didacticiel to learn adding two relative integers with the help of a little toy.
Great way to make things visual. The character is fun also, and could be used by more projects.
It's a great tool. I think it could use some instructions. I kept expecting it to tell me whether I got the correct answer.
Also, the number line is very small. It's hard to read the answer, even with the red mark pointing to it.
The integer background at the right of the equal turns yellow when the answer is right. Other feedback will be possible.
Yes the ruler I produced is too small...
Any way this is just a small test project I ask my student to reproduce to learn Etoys.
It could be possible to produce an alternative to learn to substract relative integers.
Regarding the readability of the ruler, you may have to remove the scale-to-fit option of Etoys because it really makes small things difficult to read.
Cool! But I do agree with the earlier commentator who mentioned the desirability of some minimal instructions.
It took a while for me to figure out how to use the toy properly (e.g. that I was expected to type in the result into the solution box,) and to realized that the many "paused" scripts in the project (as seen in an all-scripts tool) were not really "paused" for a reason (e.g. if you hit "go" to resume all paused scripts, the project becomes unusable...)
You are right about a minimal set of instructions. However I always fell incomfortable writing inststructions in English in an educative context as I will undoubtly insert grammar or speeling errors in my message. I will write a small text and ask in the list for a review. Thanks.
I enjoyed playing with this project.
Had no problems using it.
Regarding the readability of the ruler:
If I open Etoys4 and look for your project, I can see the "full screen" icon and use it.
The project now uses the full width of my screen.
However, if I go to squeakland.org, look for your project and open it, it doesn't take the whole screen and the "full screen" icon is not visible.
Checked another project and doesn't have this problem.
I'm just learning and would like to hear comments on this point.
I enjoyed playing with the blue guy.
I have one concern: You are using addition of negative numbers in a different way then we do in some situations in Etoys; Adding positive number to a forward by results in moving the object forward, while adding negative number moves the object backward, and does not change its heading.
I would rather keep conventions, especially at the early stage of learning the rules.
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