{"system":{"system_id":"us_ccss","public_slug":"us-ccss","label":"US Common Core Math","official_source_urls":["https://thecorestandards.org/Math/","https://thecorestandards.org/standards-in-your-state/"]},"standard":{"system_id":"us_ccss","system_slug":"us-ccss","system_label":"US Common Core Math","code":"CCSS.6.EE.A.4","label":"equivalent expressions, variables, identity; identify, justify, compare.","public_slug":"curratom-us-ccss-6-ee-a-4","route":"/math/standards/us-ccss/curratom-us-ccss-6-ee-a-4","data_json_route":"/math/data/standards/us-ccss/curratom-us-ccss-6-ee-a-4.json","data_markdown_route":"/math/data/standards/us-ccss/curratom-us-ccss-6-ee-a-4.md","skill_count":2,"skills":[{"title":"Algebraic expression manipulation: simplify, expand, factorise","route":"/math/skills/prealg/expression-manipulation-expand-factorise","family_name":"Equations, Variables, Expressions, and Inequalities","standards":[]},{"title":"Variable As Unknown","route":"/math/skills/prealg/variable-as-unknown","family_name":"Equations, Variables, Expressions, and Inequalities","standards":[]}],"crawler_summary":"CCSS.6.EE.A.4 maps to 2 math skills."}}