{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:2XXRFTN5UE3OFCDHCQEVPMOLQE","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"4fcdda4957e58a05fa9edd2d03fdcd8e8c0be9b2cecad398552963d8d516614f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2014-07-11T18:29:05Z","title_canon_sha256":"f4d7cd7e3257e0d9de998d0bc0f19f9752fa68e0117c59ff7642a5d28e3b02e8"},"schema_version":"1.0","source":{"id":"1407.3243","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.3243","created_at":"2026-05-18T02:47:51Z"},{"alias_kind":"arxiv_version","alias_value":"1407.3243v1","created_at":"2026-05-18T02:47:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.3243","created_at":"2026-05-18T02:47:51Z"},{"alias_kind":"pith_short_12","alias_value":"2XXRFTN5UE3O","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"2XXRFTN5UE3OFCDH","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"2XXRFTN5","created_at":"2026-05-18T12:28:11Z"}],"graph_snapshots":[{"event_id":"sha256:b36a3f5e8f50aa5feb10cebf3efba008b9811999983f9ecd8d21827f426312f1","target":"graph","created_at":"2026-05-18T02:47:51Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"As part of a study into students' problem solving behaviors, we asked upper-division physics students to solve estimation problems in clinical interviews. We use the Resources Framework and epistemic games to describe students' problem solving moves. We present a new epistemic game, the \"estimation epistemic game\". In the estimation epistemic game, students break the larger problem into a series of smaller, tractable problems. Within each sub-problem, they try to remember a method for solving the problem, and use estimation and reasoning abilities to justify their answers. We demonstrate how a","authors_text":"Bahar Modir, Eleanor C. Sayre, Paul W. Irving, Steven F. Wolf","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2014-07-11T18:29:05Z","title":"Learning about the Energy of a Hurricane System through an Estimation Epistemic Game"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.3243","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:9268a8d77786e15cf4337216ccd13a3c521cc340de8115a45c39230e97b8bea6","target":"record","created_at":"2026-05-18T02:47:51Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"4fcdda4957e58a05fa9edd2d03fdcd8e8c0be9b2cecad398552963d8d516614f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2014-07-11T18:29:05Z","title_canon_sha256":"f4d7cd7e3257e0d9de998d0bc0f19f9752fa68e0117c59ff7642a5d28e3b02e8"},"schema_version":"1.0","source":{"id":"1407.3243","kind":"arxiv","version":1}},"canonical_sha256":"d5ef12cdbda136e28867140957b1cb8121ab40e34da9c66e8d24b3b69fd0dfcb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d5ef12cdbda136e28867140957b1cb8121ab40e34da9c66e8d24b3b69fd0dfcb","first_computed_at":"2026-05-18T02:47:51.619201Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:47:51.619201Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ys6i8JDXbVDOIrJ9HkxkaBLrr1D+P/0lL4O1vgwIgxcXCvfZGFig+cPvFcjiolSni1+/OOEXo1ohcTIeulMcAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:47:51.619830Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.3243","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9268a8d77786e15cf4337216ccd13a3c521cc340de8115a45c39230e97b8bea6","sha256:b36a3f5e8f50aa5feb10cebf3efba008b9811999983f9ecd8d21827f426312f1"],"state_sha256":"b2dfae177f4960bfea892ded4aa726b8321ea3824331bac60dd601f189f25bc5"}