The “Checks”/”Emails” lab: a good start to the semester

Checks and their corresponding emails, side by side. Photo by M. Hoefnagels.

Checks and their corresponding emails, side by side. Photo by M. Hoefnagels.

We just finished our first week of classes at the University of Oklahoma, and my nonmajors students trooped dutifully into lab on Tuesday and Thursday afternoons. To get them talking to each other, one of the icebreaker activities we have done for many years is the “Checks lab,” a lesson on the nature of science. According to the Checks lab page, the activity was originally developed in 1992 by Steve Randak and was modified in 1999 by Judy Loundagin.

In case you’re not familiar with this activity, here’s a summary. Each team of students is given an envelope containing copies of 16-17 checks that are made out to various payees. Students are told to withdraw four checks at random and propose a scenario that could account for the checks. They then withdraw four more and revise their scenario to account for the new information. After one more round of withdrawing two more checks, they aren’t allowed to see any more checks. At that point, the class as a whole comes together to figure out what actually happened to the people writing the checks.

Since each team sees a different subset of the checks, and no one sees them all, students may not agree on what happened and when. Depending on how deep the instructor wants to go into the nature of science, the ensuing discussion can go in any number of directions. To me, the main points are that scientists never get 100% complete information, that other researchers may have information that your group doesn’t have, and that collaboration is a valuable way to get as much of the story as possible. The website where I found this activity has a huge number of ideas for expanding on these and many others when teaching about the nature of science; I recommend it.

Over the summer, however, I got to thinking about whether students these days actually write checks (or know what they are). I did some asking around, and it turns out that they do—but they don’t write nearly as many as we did in our youth. They buy a lot of things online, and even when they pay for something in person, they are likely to use a debit or credit card. So the trusty old “checks lab” seems a bit outdated.

Apparently I am not the only one who thinks so, because Judith Lederman and her colleagues published an updated version in The Science Teacher for September 2015, 82(6):57-61. This new version includes copies of emails instead of checks. Hurray! The emails themselves have been posted to NSTA’s The Science Teacher Connections, Sept. 2015 edition; here’s a direct link to the Word document they provide at that site.

Matt Taylor has upped the ante a little bit more: He turned the Word document into a PowerPoint (to be printed at four slides per sheet) that has a reduced emphasis on the AOL and hotmail logos. We used these mock emails in our labs last week, and they worked great; if you would like me to email you a copy, please write a comment in this blog post. In the meantime, kudos to all who developed, modified, and shared this activity.

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22 Responses to The “Checks”/”Emails” lab: a good start to the semester

  1. Kirsten Kapp says:

    Hello! I would love to see a copy of the email version you used for the activity. Thanks! My email, in case it doesn’t display, is Thanks again!
    -Kirsten Kapp
    Central Wyoming College

  2. Kelly West says:

    I would love a copy of the Powerpoint. Thank you!

  3. I was looking for a new way to start lab and this sounds really cool! May I have a copy please? My summer non-majors biology lab starts Wed and I wanted to find something that would be easy to set up. Sharon Standridge, Middle Georgia State University

  4. lizardc says:

    Could you please email a copy of this lab? I would love to use it with my AP Bio students.

  5. Laurie Clarke says:

    I would love a copy of the lab!

  6. Kaleigh says:

    I would love a copy of this lab! Could I please have the Power Point version as well? Thank you!

  7. Corina Wack says:

    Hello, if you could send me the documents you have for this lab, I would love to use it for a new nonmajors biology course I am teaching this fall. Thanks! My email is

  8. Stephanie Berryman says:

    I was just about to recreate the checks lab into the “texts lab,” but stumbled on your blog post. Would you be able to send me the handout as well as the powerpoint? Thank you!

  9. Cheryl Dunham says:

    I would love a copy of the revised email version / powerpoint too.

  10. Mindy Porter says:

    I would love a copy of the email lab/powerpoint.

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