Force the student to drag and drop all objects

If you could attach your .story file here, I'll bet someone can help you.

SEGUINTE EXEMPLO NO ANEXO

You are using the "Down" state to check if the objects have been dropped. The problem is that when you click on the object, it changes to the "Down" state and stays there. So what you are checking is if the object has been clicked.

Instead, use the "Drop Correct" and "Drop Incorrect" states, because if an object leaves a drop target, the state turns back to "Normal". If you are checking for "Drop Correct" or "Drop Incorrect", the software can recognize if the object is on a drop target or not.

Also, you need to go into Drag & Drop Options and set the feedback so it is not delayed:

very good!
But you have 3 or more buttons, how would it look?

for more than 3, try using (is not equal to), but it didn't work

Hi EADSKILL RISE!

The first step to do is add a Drop Correct state to the rectangles, which is what Walt suggested! Thanks Walt!

And then you'll need to change the trigger "Change State of Submit to Normal when the state of all the rectangles is Drop Correct".

I've attached the updated Story file which includes three rectangles. Let me know if you have any questions! 

Quase isso, mas o problema ainda persiste se o aluno tentar jogar um objeto em cima do outro.

o que eu queria era que, quando um objeto saísse, o botão fosse "Desativar" novamente.

Veja o gif que eu postei.

I looked at EXAMPLE_3.story and found that the problem is "Submit" changes to normal if two of the objects are dropped correctly:

but it is required that all three objects be dropped correctly to get the problem correct: