Activity
Science Education Resource Center at Carleton College

Serc: Lab: Conservation of Mass

For Teachers 6th - 8th
This lab experiment shows students that mass is not gained or lost during a chemical reaction. Lab also includes a set of lab questions that requires students to balance the chemical equation for the reaction that occurs in this lab.
Lesson Plan
Science Education Resource Center at Carleton College

Serc: Conservation of Mass Gum Lab

For Teachers 9th - 10th
Learners investigate whether or not chewing gum should be considered eating using the law of conservation of mass to reason that the portion lost of the original mass of gum must be swallowed.
Website
My Science Site

Life Systems: Cells, Tissues, Organs

For Students 9th - 10th
Extensive site for teachers provides some helpful resources that pertain to plant and animal cells. Includes a microscope diagram as well as plant, animal and pond labs. Also contains links to structures and mechanisms, matter and...