## Select a standard

HSN‑Q.A.1 ${}^{\huge\star}$Use units as a way to understand problems and to guide the solution of...
HSN‑Q.A.2 ${}^{\huge\star}$Define appropriate quantities for the purpose of descriptive modeling.
HSN‑Q.A.3 ${}^{\huge\star}$Choose a level of accuracy appropriate to limitations on measurement when...