1. NSDL Technical Platforms Diagrams

2. NSDL Collections Technical Platform NSDL.org Library search and browse UI Key Ingest services and tools Repository services and APIs Views and learning applications Ingest collections of metadata, annotations, use data/paradata Search API Learning Apps Science Literacy Maps, CCS, etc. Perform resource-centric search and retrieve resource metadata, collection metadata, annotations, use data/paradata for views OAI-PMH Harvest collections from partners DDS Repository Search Server Contains NSDL resource metadata, collection metadata, annotations, use data/paradata Manage collections of metadata, annotations, use data/paradata, collections metadata NCS Manage metadata collections OAI-PMH Data provider for collections Partner 1, n Portals, learning apps, mobile apps, etc. Harvest resource metadata, collection metadata, annotations Public service APIs Repository system for library collections Views and applications Ingest tools, services

3. Strand Map Service Technical Platform Science Literacy Maps NSDL Science Literacy Maps UI Key Repository services and APIs Views and learning applications JavaScript API and REST API Learning Apps DLESE Earth Science Literacy Maps, CCS, etc. Create interactive user interfaces for AAAS Maps and learning progressions, embed NSDL resources aligned to Benchmarks, access database of Benchmarks, Maps, and generated visualizations Strand Map Database Database of AAAS Benchmarks and Maps OAI-PMH Data provider for Benchmarks Partner 1, n Portals, learning apps, mobile apps, etc. Harvest AAAS Benchmarks SMS service APIs Repository of AAAS Benchmarks and Maps Views and applications Visualization Engine