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2. Mathematics education in the United States - Wikipedia

   en.wikipedia.org/wiki/Mathematics_education_in...

   A typical sequence of secondary-school (grades 6 to 12) courses in mathematics reads: Pre-Algebra (7th or 8th grade), Algebra I, Geometry, Algebra II, Pre-calculus, and Calculus or Statistics. However, some students enroll in integrated programs [3] while many complete high school without passing Calculus or Statistics.

3. Pre-algebra - Wikipedia

   en.wikipedia.org/wiki/Pre-algebra

   Pre-algebra is a common name for a course taught in middle school mathematics in the United States, usually taught in the 6th, 7th, 8th, or 9th grade. [1] The main objective of it is to prepare students for the study of algebra. Usually, Algebra I is taught in the 8th or 9th grade. [2]

4. Outline of algebra - Wikipedia

   en.wikipedia.org/wiki/Outline_of_algebra

   Algebra is one of the main branches of mathematics, covering the study of structure, relation and quantity. Algebra studies the effects of adding and multiplying numbers , variables , and polynomials , along with their factorization and determining their roots .

5. Pre-Lie algebra - Wikipedia

   en.wikipedia.org/wiki/Pre-Lie_algebra

   Every associative algebra is hence also a pre-Lie algebra, as the associator vanishes identically. Although weaker than associativity, the defining relation of a pre-Lie algebra still implies that the commutator x y − y x {\displaystyle x\triangleleft y-y\triangleleft x} is a Lie bracket .

6. Experts Say Concussions Are Worse For Women—Here’s Why - AOL

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   4. Stay active. Weight training, walking, and flexibility and mobility work will all be your best friend when it comes to preventing a brain injury, says Dr. McQuiston. This is partly because they ...

7. Amazon wants to spend $104 billion, and the stock gets ... - AOL

   www.aol.com/finance/amazon-wants-spend-104...

   Amazing what some foreign-exchange fluctuations and eye-popping capital expenditures guidance will do to a large-cap tech stock. Amazon stock was clipped by 3% to $231.80 each in premarket trading ...