Kisung Y

Queens, NY

Math, Biology, And History Instructor



Hello. I am Kisung Yoon, and I am a senior in high school. I am currently in the ARISTA Honor Society, and I have tutored my fellow students from my school in Algebra I, Algebra 2, Global History, US History, and Biology. Not only that, I also tutored my younger sisters on the standardized tests mainly in math(cc).Due to my personal experiences, I am able to teach kids in grades 3-6(CC). I do prefer to work at home as well as online tutoring to help our children to grow as smarter and to grow more knowledgeable students to be able to apply the concepts into other parts of school subjects, but more importantly, they will be able to apply logical reasoning and memorization as well as other aspects of being ready to deal with real-life situations.


All Highschool Required

Subjects of Expertise

Pre-Algebra, Algebra 1, Algebra 2, Geometry, Trigonometry, Biology, Chemistry, U.S. History, World History, Elementary Math (K-6th)

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30 Tutorials by Kisung Y

German Unification under Otto von Bismarck

During the 1860s, King Wilhelm I led Prussia, and he appointed Otto von Bismarck as the Foreign Minister of Prussia. Bismarck was a shrewd diplomat, and he used force and conquest to get the lands that Prussia needed to become the German Empire. He gave a speech regarding about the German Unification.

Homestead Act of 1862

The Great Plains had vast potential to do farming and to bring development for settlers to take the land for themselves to essentially take away the land from the Native Americans.

Nicholas Copernicus

During the time of the Renaissance in Europe, the Catholic Church was weakening due to its problems and disagreements. Also, some people had begun to question the Catholic Church’s teachings, which was also the wisdom from the Greco-Roman times. This was a revolution of scientific ideas, which was the Scientific Revolution. The wisdom of the…

Converting(Changing) Fractions To Decimals

Converting fractions to decimals can be a little hard. However, there are ways to do so. You can use division because of the numerator(top part)/denominator(bottom part), like for example, 4/5. When you divide the fraction the numerator is in the inside, and the denominator is on the outside. Add two zeros and move the decimal…

Long Division

There are two ways to do division with polynomials, which are long(polynomial) division and synthetic division. In these two sample problems, this would only be done through long division. Synthetic division is the shortcut, but it only works with linear factors. You have to find the solution for x, so it can be used in…


Mitosis is the cell division that creates two identical daughter cells to the parent(clones).

Causes of World War 1

Before World War 1, and after the 40-year peace in the aftermath of the Napoleonic Wars, there were a lot of tensions brewing in Europe. The great powers had competed to be the most superior and the most powerful nation in the world. In the area called the Balkans, which were in the southeastern part…

FDR’s Court-Packing Plan

During FDR’s first term, the Supreme Court had ruled certain aspects of the New Deal to be unconstitutional like the Agricultural Adjustment Act of 1933 as well as 1935 and the National Industrial Recovery Act. After FDR’s landslide victory in the 1936 election, he proposed legislation to address the Supreme Court’s decision on the New…

Trig Ratios

In trigonometry, it is important to know the trig ratios to help solve certain problems dealing with the matters of angles, equations, degrees, unit circle, etc. There are six trig ratios. Co-functions: sin=opp/hyp csc=1/(opp/hyp)=hyp/opp cos=adj/hyp sec=1/(adj/hyp)=hyp/adj tan=opp/adj cot=1/(opp/adj)=adj/hyp -Co-functions are trig ratios that are the inverses of SOH CAH TOA. -sin=sine -csc=cosecant -cos=cosine -sec=secant -tan=tangent…

Imaginary Numbers

An imaginary number is a complex number that can be written as a real number multiplied by i, which is the imaginary unit.