A.1 A Simple Single Assessment

{
  "extensions:assessmentExtension": {
    "@context":"https://purl.imsglobal.org/spec/ob-assessment/v1p0/context/",
    "type": ["Extension", "extensions:AssessmentExtension"],
    "description": "A written evaluation based on a simulation of a medical procedure.",
    "assessments": [
      {
        "description": "The assessment presents a hypertension scenario with simulated lab results. It is administered to pathophysiology students in an undergraduate nursing program. Completing the assessment requires analytical writing describing and justifying the diagnoses and eliminating alternative diagnoses. See the Pathology of High Blood Pressure assignment and the hypertension scenario used for this assessment.",
        "type": "Artifact",
        "assessmentOutput": "Written responses to the questions posed in the hypertension scenario",
        "hasGroupParticipation": false,
        "hasGroupEvaluation": false,
        "evaluationMethod": "No studies have been done on reliability or validity but the hypertension scenario is consistent with scenarios encountered in nursing clinical practice.",
        "assessmentExample": "http://placeholderurl.com",
        "scoringMethodExampleDescription": "Placeholder text",
        "assessmentEvaluation": "http://placeholderurl.com"
      }
    ]
  }
}

A.2 An Assessment with Questions and a Rubric

{
  "extensions:assessmentExtension": {
    "@context": "https://purl.imsglobal.org/spec/ob-assessment/v1p0/context/",
    "type": ["Extension", "extensions:AssessmentExtension"],
    "description": "A rubric-based evaluation of Web Browser Skills",
    "assessments": [{
      "description": "An assessment of celerity with a web browser",
      "type": "Artifact",
      "evaluationMethod": "Rubric-based evaluation",
      "assessmentOutput": "Written responses and screenshots",
      "hasGroupParticipation": false,
      "hasGroupEvaluation": false,
      "sections": [{
        "title": "Section One: Intro",
        "description": "Show some knowledge of important facets of current web browsers.",
        "questions": [{
            "type": "TextQuestion",
            "text": "What are two ways a user can see what URL a link is going to take them to when clicked?"
          },
          {
            "type": "FileQuestion",
            "text": "What is the 'browser chrome'? Take a screenshot cropped to just show some key components of the browser chrome.",
            "rubricId": "04f28d86-994f-4469-9ad7-3bf9d703a286"
          },
          {
            "type": "TextQuestion",
            "text": "Extra credit: What are some important effects of competetition in the browser market? Why do they matter",
            "characterLimit": 500,
            "required": false
          }
        ]
      }],
      "rubrics": [{
        "identifier": "04f28d86-994f-4469-9ad7-3bf9d703a286",
        "lastChangeDateTime": "2018-01-31T16:54:00Z",
        "title": "Image Quality Rubric",
        "rubricCriteria": [{
          "identifier": "ef324364-735c-443f-975f-9d76bd91f25a",
          "description": "Resolution",
          "criterionLevels": [{
              "identifier": "2b77179b-8b68-4fbe-9e76-d6d38a8131f3",
              "quality": "Great",
              "description": "There are enough pixels to experience the image content at the appropriate visual size but not too many.",
              "position": 0
            },
            {
              "identifier": "6ac9344f-21b6-4196-93f8-4decef0bb7c3",
              "quality": "OK",
              "description": "The content is readable or understandable but there may be significantly more pixels than necessary for the purpose or too few to be used for all intended experiences, such as printing.",
              "position": 1
            },
            {
              "identifier": "29011f65-6ac7-4645-bcac-09e7124aee1c",
              "quality": "Needs Work",
              "description": "The content is not understandable. Needs more pixels.",
              "position": 2
            }
          ]
        }]
      }]
    }]
  }
}

C.1 Normative references

[OB-20]

Open Badges v2.0. Otto, Nate; Bohrer, Jeff; Cook, Timothy; Gylling, Markus; Hripak, Alexander; Pitcher, Justin. 1EdTech Consortium. April 2018. 1EdTech Final Release. URL: https://www.imsglobal.org/spec/ob/v2p0/

[OB-ASSMT-10-CONTEXT]

Open Badges Assessment Extension v1.0 JSON-LD Context. 1EdTech Consortium. April 2018. 1EdTech Final Release. URL: https://purl.imsglobal.org/spec/ob-assessment/v1p0/context/

[OB-ASSMT-10-ERRATA]

Open Badges Assessment Extension v1.0 Errata. 1EdTech Consortium. April 2018. 1EdTech Final Release. URL: https://www.imsglobal.org/spec/ob-assessment/v1p0/errata/

[OB-ASSMT-10-SCHEMA]

Open Badges Assessment Extension v1.0 JSON Schema. 1EdTech Consortium. April 2018. 1EdTech Final Release. URL: https://purl.imsglobal.org/spec/ob-assessment/v1p0/schema/

[RFC2119]

Key words for use in RFCs to Indicate Requirement Levels. S. Bradner. IETF. March 1997. Best Current Practice. URL: https://tools.ietf.org/html/rfc2119