Provides descriptions of expected student performance in the science courses comprising Ontario's science curriculum for Grades 9 and 10.

Cover title. "This document replaces The Ontario curriculum grades 9 and 10, science 1999. Beginning in September 2009, all science programs for grades 9 and 10 will be based on the expectations outlined in this document."--p. 3.

Introduction -- The program in science -- Assessment and evaluation of student achievement -- Some considerations for program planning -- Courses -- Glossary.