Third graders showed off their sound technologies by demonstrating how they worked in front of their fellow acoustical engineers.  They had to make sure they showcased how they met the criteria of the challenge--that their sound technologies could change in both pitch and volume.  Way to go third graders...I mean acoustical engineers!

With their plans approved, third graders are building their sound technologies, making sure they change in both pitch and volume as was required by the criteria of the challenge.  Check out their amazing work...we'll be able to test them in front of a crowd soon to see if they meet the goal of the challenge...to get people's attention in the sometimes noisy cafeteria!

Our school's cafeteria can get a bit noisy at times.  In fact, it can be a problem when a class needs to follow the directions of the adults in charge, yet they can't hear them.  As a result, third graders have decided to help solve this problem.  What better way to get everyone's attention than with a sound technology!

Using everyday materials, third graders will be designing and creating a technology that can change in both pitch and volume.  We agreed that the pitch should change so that it can be heard over the different levels of pitch in the cafeteria (meaning the voices of Kindergartners have a different pitch than our fifth graders)!  And it should absolutely change in volume in case the volume of the cafeteria changes, too.

Our first focus as engineers is always asking good questions, and third graders have reviewed how we can change both the pitch and the volume of various technologies.  Third graders have moved on to brainstorming their technology designs and will then plan out their designs with a partner!  Check back soon to see how some of their plans come into action!  Will they be able to change both in pitch and in volume?  Will they also be able to get everyone's attention in the noisy cafeteria?