2D/3D Structure Display Short Answer

Question types ::: qtype_easyostructure
Maintained by Carl LeBlond
Short answer question type in which the teacher can easily build 2D/3D structures in Marvin Sketch and display in Marvin View. Requires Marvin Applets from Chemaxon.
Latest release:
16 sites
5 fans
Current versions available: 1


This software is no longer maintained and has been superseded by the OpenOChem LTI Assessment System.

The 2D/3D Structure Display short answer question type is a short answer
question with MarvinSketch for building question content and MarvinView for
displaying question content. Anything that you can construct in MarvinSketch
can be easily used in short answer questions.
You can ask questions such as;
  • Are the two chlorine groups in the following structure cis or trans?
  • What is the name of the following reaction?
  • Does this structure have R or S absolute stereochemistry?


  • Interactive - students can rotate molecules in 3D.
  • instructor builds molecules and reactions with simple editor (Marvin Sketch)
  • Different display options include line bond, normal (Lewis structure like) and 3D Ball and Stick.
  • Structures can be optimized in 2D and 3D before display.


This plugin adopts the same license that Moodle does.  The Marvin Applets are free for academic purposes.


This plugin was developed at the Indiana University of Pennsylvania (IUP).  Neither IUP or Carl LeBlond are affiliated with Chemaxon.


This plugin requires Marvin Applets from Chemaxon which can be downloaded here.  Download the full package and install it at your web servers root directory.


Example questions are provided as a Moodle xml file in the examples folder. (coming soon)


This plugin is part of set EasyOChem.


Screenshot #0
Screenshot #1


Carl LeBlond (Lead maintainer)
Please login to view contributors details and/or to contact them

Comments RSS


  • Sat, Mar 16, 2019, 5:08 PM

    در اجاره خودرو رنت پارس می تونید از خدمات : اجاره ون دلیکا و اجاره ون تویوتا هایس این شرکت استفاده کنید.

    اجاره ون دلیکا

    اگر ون اجاره ای ارزان می خواید این شرکت بهترین و ارزانترین خدمات رو به شما ارایه میدهد که می توانید از خدمات اجاره ون ارزان اجاره خودرو رنت پارس استفاده کنید.

    اجاره ون ارزان

    اگر اجاره ون با راننده برای مسافرت می خواین که به راحتی سفر کنید و در راه ها چند خوانواده در یک اتومبیل باشید و با هم سفر کنید بهترین راه اجاره ون با راننده از اجاره خودرو رنت پارس است.

  • Mon, Mar 18, 2019, 8:04 PM
    Thanks for sharing a nice article really such a wonderful site you have done a great job once more thanks a lot Memorial Day Images
  • Tue, Mar 19, 2019, 8:01 PM
    Thanks for sharing with us. I just loved your way of presentation. enjoyed reading this .Thanks for sharing and keep writing
    Regards : Caprine Agrotech
  • Tue, Mar 19, 2019, 8:02 PM
    Thanks for sharing with us. I just loved your way of presentation. enjoyed reading this .Thanks for sharing and keep writing
    Regards : Caprine Agrotech
  • Fri, Mar 22, 2019, 3:59 PM
    Thanks for your post.good to hear about it.

  • Sun, Mar 24, 2019, 5:38 PM
    I like this website so much it's really awesome.I have also gone through your other posts too and they are also very much appreciate

    able and I'm just waiting for your next update to come as I like all your posts. Happy Mothers Day 2019 Images
  • Wed, Mar 27, 2019, 10:20 PM
    از خریداران محترم سیستم‌های فلزیاب خواهشمند است قبل از خرید هر نوع دستگاه با عناوین فلزیاب، طلایاب، گنج‌یاب، معدن‌یاب، ردیاب، حفره‌یاب، لوله‌یاب، آب‌یاب و غیره به موارد زیر حتما توجه داشته باشند.
  • Sat, Mar 30, 2019, 4:29 PM
    These are all needed to find best dissertation.com websites and articles with the info. Thank you very much for all your updates provided to understood the topics. regards bom dia
  • Thu, Apr 4, 2019, 4:55 PM
    This is really great,unique and very informitive post, I like it. thanks Mothers Day 2019 ImagesHappy Mothers Day 2019 Images
  • Thu, Apr 4, 2019, 9:09 PM
    Its good to see this info.
  • Tue, Apr 9, 2019, 6:45 PM
    This is really great,unique and very informitive post, I like it. thanks Happy Mothers Day Pictures
  • Wed, Apr 17, 2019, 7:31 PM
  • Wed, Apr 17, 2019, 7:34 PM

    salam aliyeeeeeeeeee
    tour to iran
  • Wed, Apr 17, 2019, 7:37 PM
    Travelling in a group means you can share your travel experiences with like-minded people from all over the world. Some people prefer traveling with a group
    tours to iran
  • Fri, Apr 26, 2019, 6:32 PM
    Awesome post. Keep Posting on regular basis. You guys are doing some great effort for your visitors like me. This is totally informative post and i am going to share this post on my facebook pages. Feel Free to Visit Mothers Day Gifts 2019
Please login to post comments