Lexi Cohen's STEM Portfolio


Welcome to my STEM portfolio. I am a member of the class of 2016 at Roland Park Country School, where I actively partcipate in the STEM program.  I truly enjoy the sciences. Due to my interests in the sciences, in sophmore year, I took honors physics and honors chemistry. After realizing my love for chemistry, I decided to embark on AP chemistry during my junior year. I found interest in the labs and enjoyed discovering the makeup of the world on a molecular level.

 

Joining the STEM institute my freshman year was a smart deicision for me as the extra classes in science, technology, engeneering, and math furthered my curiosity in these subjects. I also participated in a summer program, ESSRE (Environmental summer research experience for young women). One of my first projects in my STEM classes, was creating a test on Scratch Program to determine what the effect of flashing lights is on short term memory. In case your computer does not have scratch downloaded, below is a screenshot of my program. I also wrote a paper on this project, which can be seen in my links. Second semester of my first year of STEM, I worked on an egg drop project, which also culimanted in a final paper. During my sophmore year, we first started working with the scratch program again, and my project for that can also be seen below. We also learned about Euclydian Gemometry and wrote a paper on the different types of geometry. To end the 1st semester, I worked with some classmates to create a project on the topic of opitcal illusions. Throughout second semester, we tried to find the most efficient way to package a bottle of sunscreen. We made a powerpoint about the materials we chose and did an impact study to show our progress with the package.

 

For my 11th grade long term internship, I am working with Katrina Ferrara and Barbara Landau on thier study of Williams Syndrome at Johns Hopkins University. I am specifically looking at the episodic autobiographical memory of people with Williams Syndrome compared to that of typically developing people to discover any differences.

 

 

STEM 1A

Short Term Memory Test  This is a test made to see how flashlight lights affect people's short term memory. Different speeds of flashling lights were included to see if the speed impacted the short term memory.

Paper on Short Term Memory  My paper on short term memory includes information about previous reseach on the study, the results from my study and a discussion.
 
STEM 2A
Scratch Project The assignment was to create any object using the scratch program. I created a smiley face.
Geometry Paper This paper compares and contrasts spherical, hyperbolic, and euclidian geometry.
 
Opitcal Illusions
 
STEM 1B
Egg Drop Paper   For this project, the goal was to build a package that would not allow an egg to break when dropping it 72 meters. Also, we tried to make it as light and inexpensive as possible. My package was successful.
Clay Mask Paper This paper includes the procedure for the mask, a justification for the materials used, a cost analysis, and a pareto chart. I enjoyed this project because it was an insight into what we all use frequently on our faces.
 
STEM 2B
Materials Presentation
Impact Study
 

 

Short Term Memory Scratch Program:

 

Individual Scratch Program: