assign 4

Assignment Instructions
Once you have completed your preparation, you will create your prototype and design justification per the instructions below.
Part A: Prototype
Build a prototype that suits the goals and expectations of its users. This should be an adaptation of the wireframe that you submitted in Unit 3. Your prototype should provide the look and feel of your user experience, with all of the following demonstrated: 

Adhere to best design principles for layout and style.
Build navigation and controls that users would find intuitive.
Incorporate accessibility factors into the design of your interface.
Develop a flow that allows users to achieve their goals efficiently.

Your prototype should provide the look and feel of your user experience, with all of the following illustrated: color, font styles and sizes, user controls, use of text and/or instructions, navigation controls, and the actual design layout of each page.
Choosing a Tool to Create Web pages
You may use any tool available to you to build the prototype Web pages as long as it will allow you to create one Web page per file in one of the following formats: .sketch, .psd, .pdf, .png, .jpg, .gif, or .png. Note that this means you could also draw your screen or page by hand, and take a clear photo of it to generate a .jpg file. However, it will be difficult for you to add color, fonts, images, et cetera, if you use this approach. Possible tools include Paint, PowerPoint, Word, Adobe Illustrator, Visual Studio, Visio, et cetera. You may also use other prototyping tools that are available as open source or via free trial downloads. The only requirement is that you should be able to save the page in one of the formats identified above (one screen per page per file).
After you have completed all of your screens or pages and saved them as individual files, plan the user flow between screens or pages for the customer to:

Select from the menu.
Pay for the meal.
Submit the order. 

Using InVision to Build Your Prototype
You are required to use InVision to build your prototype in this assignment. InVision offers a free account that will allow you to upload your screen or page files and link them together to mimic user task. Visit the InVision Web site (link given in the resources) and sign up for a free account.
Please note: InVision will ask for an e-mail address and a phone number. Promotional e-mails from InVision representatives are likely to arrive in the e-mail account you provide. You may wish to choose carefully what you share with InVision, if you would like to avoid being contacted by their representatives.
An initial Getting Started video will walk you through uploading your files and then linking them together by creating hotspots (ideally over buttons) so that you can establish the flow through the screens that the user will experience when using your restaurant ordering system. Complete creating the hotspots as well as the links between screens. Then test your prototype by beginning with the start screen and going through the user tasks involved in selecting a meal, paying for it, and submitting the order.
After you have completed your prototype and reviewed it carefully, from the Prototype view in InVision, click the green Share icon and then click Public Share Link that appears in the gray bar at the bottom of the dialog box that opens. Copy and paste the URL to your prototype in a document that will contain your design justification (see Part B).
Part B: Design Justification
Your design justification should explain the prototype design strategies and decisions that you made to address the human factors most likely to be impacted by use of the food ordering system. Specifically, describe your choices and justify the following items, and explain how they address important human factors:

Structure of each screen or page (organization of elements on the page).
Navigation controls.
Font styles and sizes.
User controls (interactive components—buttons, textboxes, et cetera).
Use of text or instructions, as applicable.

When you have completed the prototype and the design justification document with the InVision public share link to your prototype, add all files to a zip file and submit it to the assignment area. Also, create a post in the second discussion in this unit that contains your InVision public share link, your e-mail address, and a brief description of the restaurant for your user interface design.
Refer to the Constructing a Prototype Scoring Guide to ensure that you meet the grading criteria for this assignment.
Submission Requirements
Your assignment should meet the following requirements:

Written communication: Communicate effectively. While content is the most important aspect of your assignment submission, organization, readability, grammar, and spelling are also important.
APA format: Resources and citations must follow current APA guidelines.
Document type: Submit the assignment as a zip file.

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