> ## 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 - **Learning components**: Granular, teachable skills that break down broad standards into actionable instructional units - **Standards crosswalks**: Connections between standards and frameworks - **Curriculum**: Structured course content including courses, lesson groupings (units, sections, modules), lessons, activities, and assessments **Learn more:** - [Knowledge Graph Overview](/knowledge-graph/understanding-knowledge-graph/introduction) - [Standards](/knowledge-graph/schema-reference/standards) - [Learning components](/knowledge-graph/schema-reference/learning-components) - [Standards crosswalks](/knowledge-graph/schema-reference/standards) - [Curriculum](/knowledge-graph/schema-reference/curriculum) - [Quickstart](/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 operations - name: Durable skills description: Durable skills frameworks and skills operations - name: Hierarchy description: Hierarchical navigation operations - name: Learning components description: Learning components operations - name: Learning progressions description: Learning progressions operations - name: Search description: Search and discovery operations - name: Standards Crosswalks description: Standards crosswalks 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: Unique identifier for the resource in Knowledge Graph 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 schema: type: integer minimum: 1 maximum: 1000 default: 100 CursorParam: name: cursor in: query required: false description: >- Pagination cursor obtained from the `nextCursor` field in a previous response (not needed for the first page) schema: type: string schemas: PaginatedResponse: type: object description: Cursor-based paginated response required: - data - pagination properties: data: type: array description: Array of result items items: type: object pagination: $ref: '#/components/schemas/Pagination' 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: Unique identifier for the resource in Knowledge Graph name: type: string description: Name or title of the resource ordinalName: type: string description: Label with sequence number and descriptive text (e.g., "Activity 1") position: type: integer description: Position of the resource within its parent academicSubject: type: string description: Academic subject gradeLevel: type: array items: $ref: '#/components/schemas/GradeLevelENUM' author: type: string description: Author or creator of the resource provider: type: string description: Source data provider for the resource inLanguage: type: string description: Language used in the resource (BCP 47 format) educationalUse: type: string description: Educational use of the resource audience: type: array items: type: string description: Intended audience of the resource license: type: string description: URL to the resource's license document curriculumLabel: type: string description: >- Curriculum-specific categorization of the resource (e.g., "Warm-up", "Cool-down", "Practice") lmsLoadingGuidance: type: string description: LMS loading guidance for the resource isOptional: type: boolean description: Whether the resource is optional to complete courseCode: type: string description: Unique identifier for the resource used by the course provider timeRequired: type: string description: >- Approximate amount of time required to work through the resource (ISO 8601 duration format) studentGroupingType: type: string description: >- Grouping structure for student participation (e.g., "individual", "pair", "small_group", "whole_class") dateCreated: type: string format: date description: Date created attributionStatement: type: string description: >- Statement that acknowledges the resource's author and provider, as required by the CC BY 4.0 license Error: type: object description: Standard error response object returned for all error conditions required: - error - message - requestId properties: error: type: string description: >- Machine-readable error type identifier (e.g., `ValidationError`, `NotFoundError`, `InternalServerError`) message: type: string description: >- Human-readable error message that explains what went wrong and may include actionable guidance requestId: type: string description: Unique identifier for this request (for debugging and support) details: type: object description: >- Optional additional details about the error, such as validation failures or field-specific issues additionalProperties: true Pagination: type: object description: Cursor-based pagination metadata required: - limit - hasMore properties: limit: type: integer description: Maximum number of results to return per page nextCursor: type: string nullable: true description: >- Cursor for fetching the next page of results in your next request (`null` if there are no more results) hasMore: type: boolean description: Whether there are more results after this page GradeLevelENUM: type: string description: Educational grade level that the resource is intended for enum: - PK - K - '1' - '2' - '3' - '4' - '5' - '6' - '7' - '8' - '9' - '10' - '11' - '12' securitySchemes: ApiKeyAuth: type: apiKey in: header name: x-api-key description: API key for authentication ````