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2. Missing square puzzle - Wikipedia

   en.wikipedia.org/wiki/Missing_square_puzzle

   The missing square puzzle is an optical illusion used in mathematics classes to help students reason about geometrical figures; or rather to teach them not to reason using figures, but to use only textual descriptions and the axioms of geometry. It depicts two arrangements made of similar shapes in slightly different configurations.

3. Exercise book - Wikipedia

   en.wikipedia.org/wiki/Exercise_book

   These notebooks are called copybooks at English language lessons in Russian schools. [3] A "thick" notebook (Russian: общая тетрадь, general-use notebook) with more than 24 sheets and up to 96 sheets, having width at least 144 mm and height no more than 297 mm (same height as A4 paper size). These notebooks are intended for usage in ...

4. Elementary mathematics - Wikipedia

   en.wikipedia.org/wiki/Elementary_mathematics

   Elementary mathematics, also known as primary or secondary school mathematics, is the study of mathematics topics that are commonly taught at the primary or secondary school levels around the world. It includes a wide range of mathematical concepts and skills, including number sense , algebra , geometry , measurement , and data analysis .

5. 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 ...

6. Hidden Uses for Common Household Products Most People Don't ...

   www.aol.com/finance/hidden-uses-common-household...

   1. Tennis Ball. Tennis balls are so useful that you may want to buy some to keep around the house even if you don’t play. For example, half a tennis ball can help screw open tight caps.

7. 22 arrested in Pennsylvania in connection to alleged human ...

   www.aol.com/22-arrested-pennsylvania-connection...

   Twenty-two people were arrested in Pennsylvania in connection to a human trafficking operation tied to two massage businesses, officials said.. The District Attorney for Cumberland County ...