Written by Alyssa Burley.

Project Cornerstone educated over 270 sixth-grade students in eight science classes about the importance of construction aggregates (i.e., sand, gravel and crushed stone) at Greenfield Middle School on November 10th, 12th and 13th, 2015.

The in-class activities included three sections: a lecture about the importance of local construction aggregates, a lab experiment to test two sand samples to determine which type is best for making concrete, and a science project where the students made their own concrete projects.