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Pic 7.17
To unlock the padlock and enter the next lesson, you should get 50% or more
in the previous lesson
Once the lock is opened, you will see the blue button 'play' to begin the next
lesson
As you progress through the chapter, you will have access to more lessons.
You can always go back and review the finished lesson to review topics or
improve your score.
Pic 7.18
The lessons have several different types of activities, all complete with
instructions and guidance. In all the lessons you can find the same
functionality and continuity of concepts of user's interface.
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