Accessibility for educational games is a work in progress across the industry. We continually seek solutions to make our products fully accessible and we strive to adhere to established standards for accessibility and usability on each new project. Some of our older products may not be accessible in all areas, and have not been optimized for current accessibility recommendations. Here, we offer the content and approach of this game, so that learners are better able to find alternative content and ways of learning.

Content of the module

Nitrogen interactive supports learning the basics of agricultural chemistry related to nitrogen. In three different modules students can practice creating different chemical compounds while learning about the different types of the molecule (e.g. amino acid versus carboxyl) and the molecular mass of the molecule.


Rather than relying on accuracy and speed, these modules focus on subject comprehension and do not contain timed exercises. By students working at their own pace, they have the opportunity to better internalize the information. If a student has access to a computer at home, they can use the modules as a study tool to review a troublesome concept, or explore a new concept at their own pace. These interactions require some clicking and dragging. For example, the user will be dragging different elements from the Periodic Table to a create a molecular model.

Input Devices

Requires mouse or trackpad, may be accessible for some special equipment replacing trackpad. It does not include an option to map buttons to the keyboard, which may create difficulty for those who need longer to perform tasks with the mouse.


This interactive module is designed in HTML5 for web-based desktop and may not perform optimally when using mobile devices. The compact size of a tablet or mobile device makes the module extremely difficult to view, especially on interactive screens. While the user is able to manipulate the desired element by using a drag-and-drop method to place elements in their correct positions, the user will have problems scrolling down to the bottom of the page. It is difficult to view and access all the possible chemical elements necessary needed to complete any given structure.

The main menu is well organized, allowing teachers to pick and choose which lesson they want to cover. The drop-down menu can also serve as a tool which students can use to aid in their understanding of a topic. If students have trouble comprehending how to perform an exercise in one of the modules, the teacher can utilize the main menu to review previous slides to clarify any misunderstandings.




These modules are only accessible in English.