1. NSDL STEM Exchange: Technical Overview and Implications for Active Dissemination of Federally Funded Resources Across Implementation Systems

2. Getting Items into NSDL Ingest Services – OAI-PMH – Open Archives Initiative Protocol for Metadata Harvesting – Web Feeds, RSS ingest Tools – NCS – Out-of-the box tool for managing metadata collections in the NSDL – jOAI – Tool that enables existing systems and databases to provide metadata and paradata via OAI-PMH

3. NSDL Technical Platform NSDL.org Library search and browse UI Key Ingest tools and services Repository services and APIs Views and learning applications Ingests metadata, annotations, and paradata into NSDL Search REST API (DDS) Learning Apps Science Literacy Maps, CCS, etc. Combines resource metadata, annotations, and paradata Perform resource-centric search; retrieve metadata, annotations, and paradata for views OAI-PMH Ingest from partners NSDL Data Repository (NDR) Contains resources, resource metadata, annotations, and paradata for all NSDL collections Writes metadata, annotations, and paradata into NSDL Ingests metadata, annotations, and paradata into NSDL NCS Metadata editor tool Web Feeds Selected partner feeds OAI-PMH Data provider Partner 1, n Portals, learning apps, mobile apps, etc. Harvest resource metadata, annotations, and paradata Public service APIs Repository system Views and applications Ingest tools, services

4. STEM Exchange Intel Learning Centre Search REST API CTE Online Combines resource metadata, annotations, and paradata OAI-PMH Data provider Resource Profile Page at NSDL Partner 1,n Perform resource-centric search; retrieve metadata, annotations, and paradata for views NSDL Data Repository (NDR) Contains resources, resource metadata, annotations, and paradata for all NSDL collections OAI-PMH Ingest paradata Partners share paradata back via OAI-PMH

5. NSDL Handle Service Unique ID assigned to each object in the repository: – Resource – Resource metadata – Paradata – Annotation – Collection Metadata Handles are assigned on ingest APIs allow look-up by handle or partner ID

6. Search Service Search API – The Digital Discovery System (DDS) – Search over NSDL resources, annotations, and paradata – Embed resources and search directly into web sites and learning applications – Customize views for specific audiences and contexts – Integrate with JavaScript on the client side or a host of technologies and frameworks on the server side like Drupal – Examples in use: – NSDL.org; Curriculum Customization Service; Middle School Portal 2 Pathway; SMILE Pathway; DLESE Pathway; STEM exchange; NSDL Science Literacy Maps; DLESE Earth Science Literacy Maps; NCAR Library; Intel Educator Centre; NASA portals, others…

7. Search service client examples…

8. Resource-Centric Search REST Search Service – Request made with http – Response returns XML or JSON Each search result represents a single resource Each result returns: – Resource metadata from each partner collection that describes the resource – Paradata from each partner that describes the resource – Annotations from each partner that provides annotations – Collection metadata that describes each of the above sources

9. Resource-Centric Search Result: Model Single Educational Resource from 1 Collection The Capacity of the Planets http://www.pbs.org/teachers/mathline/con cepts/space2/activity3.shtm Single Educational Resource from 1 Collection The Capacity of the Planets http://www.pbs.org/teachers/mathline/con cepts/space2/activity3.shtm Resource Metadata From Teachers Domain Resource Metadata From ComPADRE Resource Metadata From Math Common Core Paradata From BoE, CTE Online (Calif. Portals) Paradata From BoE, CTE Online (Calif. Portals) Paradata From ICPALMS (Florida Portal) Paradata From Curriculum Customization Service Annotation From BoE and CTE Online (Calif. Portals) Annotation From BoE and CTE Online (Calif. Portals) Annotation From ICPALMS (Florida portal) Annotation From Curriculum Customization Service Key Comm Paradata XML (comm_para) (proposed) Comm Annotation XML (comm_anno) NSDL DC XML (nsdl_dc)

10. XML Samples

11. Resource Profile Page in NSDL Usage Para-data dynamically aggregated from California BOE/CTE Online portal implementation Core system Para-data is set to actively compile Para data from all incoming systems (with CA as the only portal system fully implementing, data is at this time congruent with that found above from their CTE Online implementation)

12. NSDL Import/Resource Usage Statistics Screen Captures Center for the Advancement of Digital Resources in Education (CADRE) / CTE Online Portal (California) One of Calif. Implementation portals (CTE online) with a simple admin. Interface that allows remote docking and access to NSDL Import module

13. NSDL Import/Resource Usage Statistics Screen Captures Center for the Advancement of Digital Resources in Education (CADRE) CTE Online Portal (California)2 In this instance, a specific query was executed from the CA system to draw resources related to the term “measurement tools” from the NSDL Math Common Core collection to render the resulting 144 items displayed below

14. NSDL Import/Resource Usage Statistics Screen Captures Center for the Advancement of Digital Resources in Education (CADRE)/ CTE Online (California)3 Ingested resources populate NSDL Math Common Core grouping page where NSDL personnel can manage and monitor the implementation of their collections with California implementation (additionally, this grouping mechanism allows interested CA educators to subscribe to this collection) Para-data identifying exchanges occurring with each item from collection captured in Resource Usage Statistics widget designed and implemented by Calif. Team.

15. NSDL Import/Resource Usage Statistics Screen Captures Center for the Advancement of Digital Resources in Education (CADRE) / CTE Online (California)4 The original single resource “Capacity of Planets” created as part of the PBS/WGBH collection at Teacher’s Domain, is included as one of NSDL’s 128 NSF funded partners on the NSDL site. Here it is now included in CA. implementation and is exposed to CA educators with options for use, tagging, commenting, adding to favorites, recommending to colleagues, embedding within an activity or lesson as developed by a given educator (seen below), etc…(all of which is data recorded and tracked within the usage statistic widget for CA own metrics and ported back to NSDL site via jOAI specifications running on both systems for their tracking and use.)