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2. Integrated mathematics - Wikipedia

   en.wikipedia.org/wiki/Integrated_mathematics

   Integrated mathematics is the term used in the United States to describe the style of mathematics education which integrates many topics or strands of mathematics throughout each year of secondary school. Each math course in secondary school covers topics in algebra, geometry, trigonometry and functions. Nearly all countries throughout the ...

3. Roman numerals - Wikipedia

   en.wikipedia.org/wiki/Roman_numerals

   The Romans used a duodecimal rather than a decimal system for fractions, as the divisibility of twelve (12 = 2 2 × 3) makes it easier to handle the common fractions of 1 ⁄ 3 and 1 ⁄ 4 than does a system based on ten (10 = 2 × 5).

4. Harmonic series (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Harmonic_series_(mathematics)

   In mathematics, the harmonic series is the infinite series formed by summing all positive unit fractions: = = + + + + +. The first n {\displaystyle n} terms of the series sum to approximately ln ⁡ n + γ {\displaystyle \ln n+\gamma } , where ln {\displaystyle \ln } is the natural logarithm and γ ≈ 0.577 {\displaystyle \gamma \approx 0.577 ...

5. Brave New World - Wikipedia

   en.wikipedia.org/wiki/Brave_New_World

   Brave New World is a dystopian novel by English author Aldous Huxley, written in 1931 and published in 1932. [3] Largely set in a futuristic World State, whose citizens are environmentally engineered into an intelligence-based social hierarchy, the novel anticipates huge scientific advancements in reproductive technology, sleep-learning, psychological manipulation and classical conditioning ...

6. Saxon math - Wikipedia

   en.wikipedia.org/wiki/Saxon_math

   The Saxon Math 1 to Algebra 1/2 (the equivalent of a Pre-Algebra book) curriculum [3] is designed so that students complete assorted mental math problems, learn a new mathematical concept, practice problems relating to that lesson, and solve a variety of problems. Daily practice problems include relevant questions from the current day's lesson ...

7. Pi - Wikipedia

   en.wikipedia.org/wiki/Pi

   Fractions such as ⁠ 22 / 7 ⁠ and ⁠ 355 / 113 ⁠ are commonly used to approximate π, but no common fraction (ratio of whole numbers) can be its exact value. [20] Because π is irrational, it has an infinite number of digits in its decimal representation, and does not settle into an infinitely repeating pattern of digits.