Materials List: 
Counting Atoms:
How Not to Break the Law of Conservation of Matter
                    
 
        
        https://www.teachengineering.org/activities/view/mis-2230-counting-atoms-law-conservation-matter
    
How Not to Break the Law of Conservation of Matter
Each group needs:
- Design a Better Model Assignment Handout
 - 12” x 18” construction paper sheets
 - glue
 - crayons
 - colored pencils
 - access to computers or laptops to aid in creation of advertising posters for student-created molecular model sets
 - Photosynthesis and Cellular Respiration Molecular Model Set, for $20 at Amazon
 
OR
- a lab group set from one of the 12 group sets in Photosynthesis, Plants, and Food Kit #31 by Lab-Aids for $74.85
 
For the entire class to share:
- digital balance
 - assorted low-cost and/or recycled materials, such as plastic bottle caps, pipe cleaners, aluminum foil, cotton balls, plastic straws, felt pieces, etc.
 - capability to show students an online video
 
        https://www.teachengineering.org/activities/view/mis-2230-counting-atoms-law-conservation-matter