Teachers can assign articles for you to read and take quizzes on. To find the assigned articles, log into Zinc and click the 'bell' icon on the top right of your dashboard.
Or, you can click on the Dashboard dropdown at the top left of your home screen. Click on Articles, then click Assigned Articles to find your current assignments.
Ever curious why Zinc has you make a prediction before answering a multiple choice questions? Here's a video explaining why: https://zinclearninglabs.wistia.com/medias/sk99bay7tl