

Leo and Nidia use a balance scale to find the mass of each "meteorite"
used in the activity. 
Susan and Luis use a ruler to find the diameter of their "meteorites." 


Alma smooths out the flour to make a flat surface for the "meteorites"
to impact. 
Chris and Glafiro number each of their "meteorites" so they can
tell one from another. 


Karla and Rossi are using a ruler to find the diameter of each
"meteorite." 
Juan, Michael, and Ruby use a balance scale to find the mass of
each rock. 