> ## Documentation Index > Fetch the complete documentation index at: https://docs.learningcommons.org/llms.txt > Use this file to discover all available pages before exploring further. # Activities in a lesson > Fetches a list of activities within a specific lesson. An activity represents a discrete instructional task or exercise within a lesson, designed for students, teachers, or both. Activities are the building blocks of lessons and typically include specific tasks, exercises, discussions, or practice problems that help achieve the lesson's learning objectives. Use this endpoint when you need to: - Get all activities for a specific lesson - Navigate the instructional components of a lesson - Access activity metadata including timing, grouping, and submission requirements - Build lesson plans or instructional sequences ## OpenAPI ````yaml /api-reference/knowledge-graph-api/openapi.yaml get /lessons/{lessonId}/activities openapi: 3.0.3 info: title: Learning Commons Knowledge Graph REST API description: > REST API for accessing education knowledge graph data including academic standards, learning components, and curriculum information. **Key datasets:** - **Academic standards**: Official state standards from all 50 U.S. states sourced from 1EdTech's CASE Network - **Curriculum**: Structured course content including courses, lesson groupings (units, sections, modules), lessons, activities, and assessments - **Learning components**: Granular, teachable skills that break down broad standards into actionable instructional units - **Relationships**: Hierarchical and semantic connections between standards, learning components, and frameworks **Learn more:** - [Knowledge Graph Overview](/knowledge-graph/understanding-knowledge-graph/about-knowledge-graph) - [Academic Standards Dataset](/knowledge-graph/entity-and-relationship-reference/academic-standards) - [Learning Components Dataset](/knowledge-graph/entity-and-relationship-reference/learning-components) - [Quick Start Guide](/knowledge-graph/getting-started/quickstart) version: '0' servers: - url: https://api.learningcommons.org/knowledge-graph/v0 description: Production server security: - ApiKeyAuth: [] tags: - name: Academic standards description: Academic standards operations - name: Curriculum description: Curriculum and course operations - name: Hierarchy description: Hierarchical navigation operations - name: Learning components description: Learning component operations - name: Learning progressions description: Learning progression and prerequisite relationships - name: Search description: Search and discovery operations - name: Standards crosswalks description: Standards crosswalk operations - name: Standards frameworks description: Standards frameworks operations paths: /lessons/{lessonId}/activities: get: tags: - Curriculum summary: Activities in a lesson description: > Fetches a list of activities within a specific lesson. An activity represents a discrete instructional task or exercise within a lesson, designed for students, teachers, or both. Activities are the building blocks of lessons and typically include specific tasks, exercises, discussions, or practice problems that help achieve the lesson's learning objectives. Use this endpoint when you need to: - Get all activities for a specific lesson - Navigate the instructional components of a lesson - Access activity metadata including timing, grouping, and submission requirements - Build lesson plans or instructional sequences operationId: getLessonActivities parameters: - name: lessonId in: path required: true description: The unique identifier of the lesson schema: type: string - $ref: '#/components/parameters/LimitParam' - $ref: '#/components/parameters/CursorParam' responses: '200': description: Successfully retrieved list of activities content: application/json: schema: allOf: - $ref: '#/components/schemas/PaginatedResponse' - type: object properties: data: type: array items: $ref: '#/components/schemas/Activity' example: data: - identifier: im:98928b4e-0183-5e0e-955d-230653db7332 name: Devices ordinalName: Activity 1 position: 0 academicSubject: Mathematics gradeLevel: - high_school - '9' - '10' - '11' - '12' author: Illustrative Mathematics provider: Learning Commons inLanguage: English educationalUse: instruction audience: - Teacher - Student - Family license: https://creativecommons.org/licenses/by-nc/4.0/ curriculumLabel: Warm-up lmsLoadingGuidance: unspecified isOptional: false courseCode: im360:Alg1 timeRequired: PT5M studentGroupingType: pair dateCreated: '2020-06-25' pagination: limit: 100 nextCursor: null hasMore: false '400': description: Bad request - Invalid query parameters content: application/json: schema: $ref: '#/components/schemas/Error' example: error: ValidationError message: Invalid query parameter value provided requestId: req_12345 '404': description: Lesson not found content: application/json: schema: $ref: '#/components/schemas/Error' example: error: NotFoundError message: Lesson with identifier 'im:invalid-id' not found requestId: req_12345 '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/Error' example: error: InternalServerError message: An unexpected error occurred while retrieving activities requestId: req_12345 components: parameters: LimitParam: name: limit in: query required: false description: >- Maximum number of results to return. Default is 100. Maximum allowed is 1000. schema: type: integer minimum: 1 maximum: 1000 default: 100 CursorParam: name: cursor in: query required: false description: >- Cursor for pagination. Obtain this value from the 'nextCursor' field in the previous response. Omit for the first page. schema: type: string schemas: PaginatedResponse: type: object description: Generic cursor-based paginated response wrapper required: - data - pagination properties: data: type: array description: Array of result items items: type: object pagination: type: object description: Cursor-based pagination metadata required: - limit - hasMore properties: limit: type: integer description: Maximum number of results returned per page nextCursor: type: string nullable: true description: >- Cursor for fetching the next page. Null if no more results available. Pass this value as the 'cursor' parameter in the next request. hasMore: type: boolean description: >- Indicates whether there are more results available after this page Activity: type: object description: > An activity represents a discrete instructional task or exercise within a lesson, designed for students, teachers, or both. required: - identifier - author - provider - license properties: identifier: type: string description: The unique identifier of the activity name: type: string description: The name of the activity ordinalName: type: string description: >- A label combining sequence number with descriptive text (e.g., "Activity 1") position: type: integer description: The position of this activity within its parent lesson academicSubject: type: string description: The academic subject gradeLevel: type: array items: type: string description: Specifies the educational grades for which the activity is intended author: type: string description: The author of the activity provider: type: string description: The service provider or service operator inLanguage: type: string description: The language of the content educationalUse: type: string description: The educational use of the activity audience: type: array items: type: string description: Specifies the intended audience for the activity license: type: string description: >- A license document that applies to this content, typically indicated by URL curriculumLabel: type: string description: >- A curriculum-specific categorization of the resource (e.g., "Warm-up", "Cool-down", "Practice") lmsLoadingGuidance: type: string description: LMS loading guidance for this activity isOptional: type: boolean description: Whether the activity is optional to complete courseCode: type: string description: The identifier for the course used by the course provider timeRequired: type: string description: >- Approximate or typical time it usually takes to work with or through the activity (ISO 8601 duration format) studentGroupingType: type: string description: >- Describes intended grouping structure for student participation (e.g., "individual", "pair", "small_group", "whole_class") dateCreated: type: string format: date description: The date on which the activity was created attributionStatement: type: string description: A human-readable attribution statement for this activity Error: type: object description: Standard error response object returned for all error conditions required: - error - message - requestId properties: error: type: string description: >- A machine-readable error type identifier (e.g., ValidationError, NotFoundError, InternalServerError) message: type: string description: >- A human-readable error message that explains what went wrong and may include actionable guidance requestId: type: string description: >- A unique identifier for this request, useful for debugging and support details: type: object description: >- Optional additional details about the error, such as validation failures or field-specific issues additionalProperties: true securitySchemes: ApiKeyAuth: type: apiKey in: header name: x-api-key description: >- API key for authentication. Include your API key in the x-api-key header for all requests. ````