Categories: Lab/Student Activity, Teacher Demonstration
Prior to Thomson’s work it was thought that the atoms of each element were unique, invisible particles, or that atoms were made of subatomic particles that had significant mass compared to the atom... read more
Categories: Lab/Student Activity, Lesson Plan, Unit Plan
This unit focuses on students' approach to water and how it is a part of people's lives. Teachers can observe students' construction with manipulatives and scaffold their knowledge by posing... read more
Categories: Lab/Student Activity, Teacher Demonstration
In this activity, student mix a given quantity of salt with a fixed volume of water. Mass and volume measurements are made before and after mixing to determine if these quantities change. Students... read more
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