Texas Essential Knowledge and Skills (TEKS)
§112.14. Science, Grade 3, Adopted 2017 – The provisions of §§112.11-112.16 of this subchapter shall be implemented by school districts beginning with the 2018-2019 school year.
(b). Knowledge and skills.
(5). Matter and energy. The student knows that matter has measurable physical properties and those properties determine how matter is classified, changed, and used. The student is expected to:
(D). explore and recognize that a mixture is created when two materials are combined such as gravel and sand or metal and plastic paper clips