Boom! is used to create units that display short answer options one after the other, and the students have to click on the correct answers.
To create a unit, navigate to For teachers - Learning units page, click Create new, and choose a unit type. To edit an existing unit, navigate to For teachers - Learning units page, find the learning unit in the list, and click the Edit button 
.
On the Boom! learning unit's edit screen you have the following fields for settings and unit content:
- Unit name - This name will be displayed in the lists of units.
- Labels - Create text labels, which describe the unit's content, purpose, target group, keywords, etc. Labels with multiple words and labels shorter than 3 characters are not supported.
- Advanced settings
- Score value - The points given after successfully completing the task.
- Correct answers required to complete the task (in %) - The percentage of correct answers required to successfully complete the task. If you have one question, the value should be the default 100%, but if you have more questions, more task screens, you can set any percentage of required correct answers.
- Task difficulty (label) - Select difficulty of the unit, which will be added as a label to the learning unit.
- Edit math formulas with Latex - This setting enables the use of a latex editor for creating math formulas.
- Task screen - This type of learning unit can contain multiple task screens. One task screen contains a field with the rotating answer options and the indicator of the number of the correct answers. To add a new task screen, click the Add new task screen button below the actual task screen. During play, a new task screen appears after completing the tasks on the actual screen.
- Response time (minutes) - The time a student can spend on completing the given task screen.
- Instruction/question - Instruction for the task or a question to answer.
- Answer options - Answer options to be displayed one after other. You can add an image
and a latex 
to these fields. You can select correct answer options by checking the Correct answer checkbox at the left side of the answer field. You can add new answer options with the Add new answer option button. - Time length on screen (sec) - The time the given answer option is displayed for. The answer options are displayed repeatedly.
- Enable info window - By enabling info window you can add an additional help text to the unit, which can be displayed by clicking on the Info button that appears on the unit's play screen. By enabling this setting, you can add a text, an image or a latex to the Info window text field.
- Convert learning unit to a superunit (add helping units) - see chapter Superunits
To check the unit's playable version, click the Save then the Preview button. After you finish editing, click the Save and exit button. This closes the editor screen and gets you back to the unit's list screen.