The periodical test quarter 3 grade 4 Science with TOS is an assessment given to students at regular intervals during the school year, typically monthly or bi-monthly, to evaluate their understanding of the topics taught during that period. These tests are often used to monitor student progress and provide feedback to both the teacher and student. The content and format of the test can vary depending on the subject and level of education, but typically include a range of question types, such as multiple choice, short answer, and essay questions. The results of the periodical tests are often used to inform instruction and guide remediation efforts, as well as to inform grades and report cards.