Do the right thing essay ideas School essay writing service

Do the right thing essay ideas


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In the following example, the labels connect the code and its output: Such a connection can be especially powerful when a line of code does multiple things: Summary Read the vocabulary The particular solutions shown here are merely examples. What matters is the underlying purpose: enabling the learner to read the program. The environment should make meaning transparent, so the learner can concentrate on high-level concepts, not vocabulary. The environment should explain in context.Annotate the data, not just the code. The examples above are just one of many ways of achieving these goals. All that really matters is that somehow the learner's questions get answered: An environment which allows learners to get hung up on these questions is an environment which discourages learners from even getting started. A typical live-coding environment presents the learner with code on the left, and the output of the code on the right.When the code is changed, the output updates instantaneously. Imagine a cooking show, ruthlessly abbreviated.First, you're shown a counter full of ingredients. Then, do the right thing essay ideas you see a delicious souffl. Then, the show's over. Would you understand how that souffl was made?

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In a modern environment, memorizing the minutia of an API should be as do you like my outfit essay relevant as memorizing times tables. The environment is responsible for making meaning transparent. The environment must enable the reader to effortlessly read the program, to decode the code, so she can concentrate on genuine programming concepts online essay writers wanted - how the algorithmic "ingredients" combine. Here is one example of how a programming environment can make meaning transparent, by providing labels on mouse-over: Control structures can be labeled as well.It's tempting to think of this as "inline help but it's not help - it's simply labeling. The problem with the following UI isn't that it lacks a "help feature". The problem is that nothing is labeled. That UI is exactly as informative as this line of code: Why do we consider the code acceptable and the UI not?Why do we expect programmers to "look up" functions in "documentation while modern user interfaces are designed so that documentation is typically unnecessary? A programming environment is a user interface for understanding a program. Especially in an environment for learning, the environment must be designed to explain.One attribute of great explanations is that they are often embedded in the context of what they are explaining. That is, they show as well as tell. Instead of just describing what vocabulary means, we can often show it in the context of the data.

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What units are these numbers in? What ranges are they in? Why are there so many numbers?Khan Academy's tutorials encourage the learner to address these questions by randomly adjusting numbers and trying to figure out what they. Imagine if you bought a new microwave, took it out of the box, and found a panel of unlabeled buttons. Imagine if the microwave encouraged you to randomly hit buttons until you figured out what they did. Now, imagine if your cookbook advised you that randomly hitting unlabeled buttons was how you learn cooking.Make meaning transparent, learning cooking is not about guessing the functionality of your kitchen esri best practice essays appliances. It's about understanding how ingredients can be combined. Likewise, guessing the third argument of the "ellipse" function isn't "learning programming". It's simply a barrier to learning.


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Designing a programming system for understanding programs. Bret Victor / September 2012, here is a simple tutorial program that a learner might face: For the sake of comparison, the examples here will use the same languages as the Khan Academy system, JavaScript and Processing. Before a reader can make any sense of this code, before she can even begin to understand how it works, here are some questions she will have: What does "fill" writing an essay for a grant mean?What do those numbers after "fill" mean? What do those numbers after "ellipse" mean?

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