STEM Projects

Trigonometry Weather Report

Pre-calculus

We used trigonometric functions to create an equation to estimate the daily high temperature for a city of our choice. My group chose to do Aspen, Colorado and we chose to find highest temperature for September 30th. We created our own equation: 22*cos(2𝜋/365(x-195))+57 and used it to find the highest temperature which was estimated to be 62 degrees.

News.MOV

Thihini Nagendran - Trigonometry Application PrBL Task

Water Bottle Rocket Project

Pre-calculus

I constructed and launched a bottle rocket in order to investigate parabolic motion. We modeled height vs time using the equation of a parabola. Design Consideration: We decided to cut 3 cardboard fins for our rocket and used hot glue to glue it onto our rocket. We decided that a straight and parallel structures would be best for our rocket. For the nose cone we used the top of another soda bottle and used duct tape to attach it. We added a few coins to the top of the nose cone (the cap) to add weight so that both ends are stable and that one end won't be heavier than the other. We used purple paint but that didn't work out because the paint came off the next day and instead we used a pink sharpie marker to color it.

The angle we measured was 33 and the height of the person who measured it was 5'1. To find the height we multiplied 90 by tan(33) and then added 5.1 which was the height of the person who calculated the angle.

To graph the parabola we entered in

y = -16x^2 + 96x into Desmos graphing calculator.

To find the height we were able to use either trigonometric equations or physics equations.

IMG_1498.MOV

Video of Rocket

During the launch of our rocket, we calculated the angle that the rocket flew, the distance, and how long it was in the air for. In total, our rocket was in the air for about 6 seconds.

Probability Game Project

Pre-calculus

We created a carnival game to explore theoretical and experimental probabilities of compound events Our Plan: For our carnival game, we decided to make it cotton candy themed with pastel colors. There are three levels to the game. Level 1: guess "heads or tales" and flip the coin. If you guess correctly, you get to move on to the next level. Level 2: Pick a color out of the 4 colors on the color wheel. Spin the paper clip on the wheel and if it lands on the color you chose, you get to move on to the final level. Level 3: Pick a number between 2-12 and roll the two dice provided. If the number you guessed matches the result of the rolled dice, you win the game and cotton candy. (No one was able to win level 3) Prizes are included for each level. Stickers for level 1, chocolate for level 2, and cotton candy for level 3.

Twig-onometry PrBL

Thihini Nagendran - Trigonometry Clinometer Indirect Measurement Project

Pre-Calculus

For this project, we went outside and came up with an object that we could measure indirectly. My group used an arch outside our school. We then recorded the data (measurements) we collected, drew a diagram and included a photo of the object to represent the problem. Finally, I used the data we gathered to find an estimated height of the arch.

Stop Motion Matrix Animation

export_1673463535835.MOV

Pre-calculus

After completing the worksheet shown to the left, I plotted the points from A-J onto its corresponding coordinate plane. I then connected the points accordingly and recorded all 8 different coordinate planes in order to create a stop motion animation.

Density Paint Pour

Chemistry I

8/16/2022

In this paint pour activity, I poured a few of the paints I had selected directly to my canvas, then turned it around to help the paint spread. I then added more paint and used a straw to blow to give my painting a marbled appearance. This activity is related to density because it enables us to identify which paints are heavier and denser. In my painting, I believe that the blue paint is the most dense because it looks heavy and it even sank through all the other layers of paint. I believe that the yellow paint is the least dense because it doesn't sink to the bottom and instead stays on top of all the other layers unlike some of the other more dense paints.

Flame Test Lab

Chemistry I

My partner and I were given 6 different metals and an unknown metal to perform a flame test on. We first connected the bunsen burner to a gas supply and turned on the gas supply. Next, we used a striker to light the bunsen burner, and heated a small amount of one of the metals over the bunsen burner using one of the wood sticks to reveal the distinct flame colors of the metals.

Disappearing Spoons Movie Trailer

Chemistry I

I was required to study chapters 9 (The Poisoner's Corridor) and 10 (Take Two Elements, Call Me in the Morning) for my Disappearing Spoons Project, and I chose to make a movie trailer about everything I learned. Chapter 9 discusses the poisonous elements of the periodic table and in chapter 10, it is explained how some elements, like silver and copper, which have antiseptic properties, could be used as life-saving medications.

Poisoner's Corridor-2.mp4

ReARTions Exploration

Chemistry I

In this lab, I learned about the oxidization process through burning a piece of copper under a candle. First, I took a piece of copper and crumbled it a little, and attached two clothes pins to each side. Then I held the piece of copper over the fire, mainly focusing on where I want the color change to happen. I held it over the fire until I felt satisfied with the art I created on the piece of copper.

Sample Create Task #1

(Pathway) AP Computer Science

I made a game where the user inputs book ideas and then at the end, it lists all user input in a list.

Screen Recording 2022-12-16 at 6.43.41 AM.mov

Sample Create Task #2

(Pathway) AP Computer Science

I created a random number guessing game where the user has five chances to guess the number correctly.

Serving Board

Production Enterprises

I created a serving board using gum wood as a mother's day gift. The routing machine was used to round off the edges. I used the band saw to cut out the design of the cutting board and coated it with water resistant paint to ensure durability.

Practice CNC Project

Production Enterprises

In this assignment, I designed my own wood design as a practice project to learn how to use the CNC machine. We first sanded a piece of wood, and then stained it. I planned my wood design on Inkscape and downloaded it as an SVG file. I then learned how to use the CNC machine for pockets, and engravings and finally cut out my design.

Drew Athletic Stickers

Production Enterprises

I used the Cricut workspace to design stickers for the Drew Athletics team. We were provided Drew logos with just the Drew text and mascot for Drew Athletics, and I had to transform the text to transparent and add my preferred shapes to design accordingly. After I finished designing it, I uploaded a PDF of the stickers to the Cricut.

Key Holder

Production Enterprises

I made a laser cut key holder using wood. I cut out four hooks on the laser cutter to be able to put four keys & glued all of the pieces together.

Cross Country CNC Project

Production Enterprises

In this project, I was assigned to create a wood sign for a cross country student at Drew Charter. I first designed my wood sign and used a new skill I learned on Inkscape called "envelop deformation" to curve the text to fit the cross- country design. I then saved the file on Inkscape as an SVG file and used the CNC machine to cut out pockets on the cross country design. I then sanded the edges to make it have clean edges.

Personal Coaster

Production Enterprises

In this project, I designed my own coaster on Inkscape. I then saved the file as an SVG file. Next, I uploaded the file to the Glow forge website. Finally, I chose the wood type, re-adjusted any imperfections and printed the file on the Glow forge machine which took about 23 minutes.

Light-up Box

Production Enterprises

I created a light-up box by first finding a box design on Makercase. I then changed the dimensions to my preferred size and I downloaded the file. I then opened the file on Inkscape and traced a image of a robot I found on google. Next, I downloaded the file file and uploaded it to the Glowforge website. I then cut out the file using the Glow Forge machine. I then glued the parts together to create a box. And finally, I put a light inside to make it a light-up box.

Key Chain

Production Enterprises

I created a Drew Keychain for my personal project using the glowforge machine. I created 3 prototypes before finally printing out my final product. This keychain set includes two pieces: one made out of plywood and the other of acrylic. After calculating the unit cost, I set my final price for this keychain to $5

Wood Table

Production Enterprises

I used biscuit joiners to align three pieces of wood to create a flat "table" with dimensions of my choice. I also used clamps to keep the table stable while it is drying. I used wood shavings and wood glue to make wood putty to fill in holes to make the table flat. I used the miter saw to cut a long piece of wood to create the sides of our table. I then sanded off the wood putty from our table. I stained the table using a cloth and left it to dry. I attached the legs to my table by drilling in holes to the four edges and using bolts and screws. I applied two coats of the water resistant paint to ensure that there would be no stains when I am actually using the table.

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