Jacob Bernoulli was a very smart man who lived a long time ago. He was born in 1654 in Switzerland. Jacob was part of a big family. His dad was a math teacher and his brother Johann was also a famous mathematician. Jacob was really interested in math from a young age, and he spent most of his life studying and researching different aspects of math.
One of the things Jacob is famous for is his work on probability. This means figuring out how likely something is to happen. Like if you flip a coin, how likely is it that the coin will land on heads or tails? Jacob figured out how to calculate the probability of different events happening. He even came up with something called the Bernoulli distribution, which is used to calculate the likelihood of certain events in statistics today.
Jacob also studied calculus, which is all about how things change over time. He was one of the first people to really understand it and he used it to solve problems in math and physics. Jacob wrote many books and papers about math, and he shared his knowledge with others so they could learn too.
Jacob Bernoulli was a very important mathematician and his work has influenced many people over the years. Although he lived a long time ago and spoke a different language, we can still learn from his ideas and use them to help us understand math better today.