Curated OER
States of Matter
Students study the vocabulary of the states of matter. In this states of matter vocabulary lesson, students investigate and study the meaning of the words solid, liquid, and gas. They experience demonstration lessons that give them...
Pennsylvania Department of Education
The Weight of Things
Students explore weight. For this math lesson, students predict which item weighs more and discuss how they arrived at their decision. Students weigh several items to determine which weighs more.