National Case Study Teaching In Science

Answer Key/Teaching Notes Account Registration and Subscription

Access to answer keys and teaching notes requires an approved account and annual paid subscription fee (access to the cases is free). All new subscribers must first be vetted to make sure that they are teachers affiliated with an educational institution. New subscribers should follow the directions under no. 3 below.


If you already have an approved account, you do not need to re-register. You do however need to pay for your subscription. To do this, go to and, when prompted, log in with your username (not your email address) and password. The cost of an annual subscription is $25.00. Online credit card payments only are accepted; we do not accept purchase orders, checks, or cash.

Please Note: Each individual teacher must have his or her own registered paid account. We do not allow account sharing. Also, we do not have institutional rates or accounts.


Go to and log in with the teacher's username and password and follow the steps presented there. The cost of an annual subscription is $25.00. We only accept online credit card payments; we do not accept purchase orders, checks, or cash.

Please Note: Each individual teacher must have his or her own registered paid account. We do not allow account sharing. Also, we do not have institutional rates or accounts.


New applicants should refer to the information below and follow the steps as indicated to first be approved for an account, after which you will be guided through the subscription / payment process.

Account Registration and Approval

Before you pay for your subscription, we need to determine that you are an instructor affiliated with an educational institution. We verify your information on your school website's faculty directory. As part of the registration process, you will be asked to provide a website address (URL) for a specific web page (not a general school home page) that will help us to determine your eligibility. The school website must show: your name, your teaching position, and your institutional email address. We verify every application by comparing it to the website information. Make sure your email address matches the one on the website. You will not be approved without this information.

If you cannot provide a URL for a school web page that lists your name and institutional email address, then list the URL of your school's general website and provide verification by one of the following two methods: (1) A note on school letterhead with your name, position, and faculty email, which you can either fax to us at 716-645-2975, Attn. Carolyn Wright, or mail to Carolyn Wright, Dept. of Biological Sciences,109 Cooke Hall, University at Buffalo, Buffalo, NY 14260; or (2) have your department head/principal (department secretary) send an email message to with your name, position, and faculty email address (Note: The person sending this email must provide the URL for a school website page showing their name, position, and school email address so that we can verify that they are a legitimate reference; if they cannot supply this, please follow option (1) above).

Please note:  We do not accept commercial email addresses from providers like Gmail, Yahoo, AOL, Hotmail,,, etc., but require youremail address at school, e.g.,

Rules and Restrictions

Upon your acceptance as a registered account holder, you enter into an agreement with us that affords you certain privileges while conferring upon you certain responsibilities:

  • Copyright for the case study materials on our website is held by the National Center for Case Study Teaching in Science. These materials must be used in conformance with our usage guidelines.
  • Reproduction, reposting, or sharing of answer keys and teaching notes is strictly forbidden.
  • Each registration/subscription is for a single user only; we do not permit sharing of passwords.
  • We reserve the right to confirm the identity of anyone attempting to register for an account as well as to log and review activities on our site and other sites using/misusing our materials.
  • If we reasonably believe that activities which compromise the confidentiality of our answer keys and teaching notes have occurred, we reserve the right to cancel your subscription without refund or notice and to block access to all users from that IP address.

Teaching Resources

CASE STUDIES are stories with an educational message. They have been used as parables and cautionary tales for centuries, yet their formal use in the science classroom is recent. So recent, in fact, that until the early 1990s the case study literature in science was virtually non-existent. This has begun to change as more and more faculty are realizing the inadequacies of the lecture method and are seeking novel methods of instruction. Enter the case study, a method imported from business, law, and medical schools.

Here we have listed articles, books, and bibliographies to the case study literature to give you a sample of recent attempts to introduce the case method into the science classroom and a glimpse of its potential as seen through the eyes of some of its most ardent advocates.

Teachers Directory
One of our goals is to build a community of case study teachers in science and engineering. Our directory lists all our case authors as well as case method practitioners (many of them trained by us) teaching in high school, community college, and university settings.

What happens in classes that use case study teaching? Do students learn more in case-based science courses? Are they able to make more connections among concepts? Can they apply these concepts to real-life situations? These are some of the questions we are exploring as we try to assess the case method and its impact.

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