Before you start, please note that this HIT requires some experience in computer programming/STEM (science, technology, engineering, and mathematics). If you don't have such experience, this HIT might be challenging and take more time than you thought. We will manually check the result of each HIT. The results which do not approximately agree with others will be rejected. Therefore if you are not sure whether you are qualified, please try only one of our HITs at the first time and decide whether to continue based on our feedback. Besides, this HIT is longer and more complicated than a general one. Please go through the following instruction before you start. The instruction is very helpful for you to submit qualified results. We really appreciate your participation!

In this HIT, you will be given with a question from a quiz in a computer programming and computational thinking class, and you have to find a learning object which allows you to answer the question from course materials provided in the class. There could be many suitable learning objects. Please try to choose the closest one to the question. A learning object can be a textbook unit, a page of slides, a discussion thread, or a specific part of a lecture video. In the following, we will give you an example to show how to complete this HIT with quality, such as how to use our tool to find learning objects, as well as how to decide which learning objects can answer a question and which can’t. After that we also provide a demo of the tool. We recommend you to try the demo before starting the HIT.

Example

• Above is an example of questions. The goal of this HIT is to find a learning object which allows you to answer the question. We provide you a search tool to find learning objects from course materials. Once you find a suitable object, you click one of the following buttons (depending on the material type of your object) , , , or placed on the top-left of your object's content to submit this HIT.
• To start the search, you enter the topic you want to find. Then you choose material type, chapter, and section of learning objects you want to survey. Note: here we show you a not useful learning object. In the HIT, you don't need to do anything, such as mark them with red crosses or not useful, to not useful objects.
  
• There are different types of learning objects you can survey.
  
• You can try different search queries.
  
• If you find a useful lecture video, move the scrubber to the useful place and submit this HIT.
  
• Under the video scrubber, sometimes there are learning objects from other materials types recommended. These objects might also be helpful to your survey.
  
• Clicking recommended slides. Note that we choose the lower slide rather than the upper one, since the upper one is general description about dictionary, and the lower one describing how to access a dictionary, which is exactly what the question is asking.
  
• Clicking recommended discussions. Not helpful in this example.
  
• You can try a live demo of this tool at here.
  
• You can also find more detailed description of our tool in the following demo video:
  
• You can try different search queries.
  
• If you find a useful lecture video, move the scrubber to the useful place and submit this HIT.
  
• Some helpful and not helpful slides. Note that we choose the lower slide rather than the upper one, since the upper one is general description about dictionary, and the lower one describing how to access a dictionary, which is exactly what the question is asking.
  
• Helpful textbook unit.
  
• You can try a live demo of this tool at here.
  
• You can try different search queries.
  
• If you find a useful lecture video, move the scrubber to the useful place and submit this HIT.
  
• Under the video scrubber, sometimes there are learning objects from other materials types recommended. These objects might also be helpful to your survey. We choose recommended slides here. Note that we choose the lower slide rather than the upper one, since the upper one is general description about dictionary, and the lower one describing how to access a dictionary, which is exactly what the question is asking.
  
• Clicking recommended discussions. Not helpful in this example.
  
• You can also try a different material type. We show a useful textbook unit here
  

Besides, if this is your first time attempting our HITs, we will do a small survey about your background. We won't judge your result by your answers in this survey.

Course materials used in this HIT are from 6.00x Introduction to Computer Science and Programming Using Python offered by MIT on edX and Introduction to Computation and Programming Using Python, revised and expanded edition by John V. Guttag, published by The MIT Press. All rights about the materials are reserved.

This HIT is part of a MIT scientific research project. Your decision to complete this HIT is voluntary. There is no way for us to identify you. The only information we will have, in addition to your responses, is the time at which you completed the survey. The results of the research may be presented at scientific meetings or published in scientific journals. Clicking on the 'Start' button on the bottom of this page indicates that you are at least 18 years of age and agree to complete this HIT voluntarily.