Alert

No Late Start for MS and US - Wednesday, February 1

In view of the lost instructional day Monday, the Middle and Upper Schools will run block schedules through the end of the week (C, D, E, and F rotations). This calendar change means that, except in the Lower School, we will NOT run a late-start Wednesday schedule on February 1. Lower School will still have a late start. Middle and Upper School classes will begin promptly at 8 a.m. on Wednesday, February 1.

Students test the strength of cement blocks

8th Graders Test Strength of Cement Blocks in Science

Eighth grade science students spent their first day back testing the strength of cement blocks they had created before leaving on break. Blocks were created using various cement “recipes” and various weighted metal washers were dropped through different lengths of PVC pipe to test their strength.

Students discovered that the concrete with straws, larger aggregate, and very little metal proved to be the strongest with this application. The original testing was done with 200g weights. Three groups’ blocks withstood the 200g mass dropped from 2 meters. Two groups’ blocks broke when the 1000g mass was dropped from a height of 2meters, so the fail point was 900g dropped from a height of 2 meters.

Check out the student’s in action in this video.

2017 Middle School Cement Drop

Middle School students spent their first day back testing the strength of some cement blocks they created before the break.Several cement "recipes" were used to make the blocks. Various types of metal and lengths of PVC pipe were used to see how well their blocks held up under pressure.

Posted by MICDS – Mary Institute and Saint Louis Country Day School on Tuesday, January 3, 2017