Reflection, refraction, electricity, floral litmus solutions

This summer I opted to run both the reflection and refraction portions of laboratory eleven. In this form the lab generates two tables and two charts. There have been issues this summer with the copying of tables and charts among students, leaving doubt as to whether everyone has learned to do their own tables and charts. Without access to the computer lab to run a hands on proctored practical, determining what is being done by whom is difficult at best.

 
Emmy Rose measures while Charlotte records data. Pamela and Taylor observe the procedure.

 
Brian and Stevenson work on reflection data.

 
Dyron holds the mirror, Charles measures, Taylor watches.

 
Maria-Asuncion and Stephanie Usiel work together on apparent depth.












 Charlotte Eperiam removes petals from flowers in preparation for boiling.


 Emmy Rose adds boiling water to her flowers to create a floral litmus solution.

 

Pamela Edgar tests unknowns to determine if they are an acid or base.


Charles Henly and Brian Wicherp testing unknowns.


 Brian with a series of test tubes. Magenta colors indicate an acid, blues indicate a base for his flower.

 

Lime fruit was used as the known acid, baking soda as the known base. Fabric swatches were incidental.


The unknowns also included neutral substances such as rubbing alcohol.

The week wrapped up with viewing a North-REP video on alternate energy projects in Micronesia and the weekly test.

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