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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. Pictogram - Wikipedia

   en.wikipedia.org/wiki/Pictogram

   A pictography is a writing system [2] which uses pictograms. Some pictograms, such as hazard pictograms, may be elements of formal languages. In the field of prehistoric art, the term "pictograph" has a different definition, and specifically refers to art painted on rock surfaces. Pictographs are contrasted with petroglyphs, which are carved or ...

4. Mathematical puzzle - Wikipedia

   en.wikipedia.org/wiki/Mathematical_puzzle

   Mathematical puzzles require mathematics to solve them. Logic puzzles are a common type of mathematical puzzle. Conway's Game of Life and fractals , as two examples, may also be considered mathematical puzzles even though the solver interacts with them only at the beginning by providing a set of initial conditions.

5. Category:Pictograms - Wikipedia

   en.wikipedia.org/wiki/Category:Pictograms

   A pictograph (also called pictogram or pictogramme) is an ideogram that conveys its meaning through its pictorial resemblance to a physical object. Subcategories This category has the following 3 subcategories, out of 3 total.

6. Number Munchers - Wikipedia

   en.wikipedia.org/wiki/Number_Munchers

   Number Munchers is an educational video game and a spin-off of Word Munchers.It was released by MECC for Apple II in 1986, then MS-DOS and Mac in 1990. The concept of the game was designed by R. Philip Bouchard, who also designed The Oregon Trail.

7. Pentagonal number - Wikipedia

   en.wikipedia.org/wiki/Pentagonal_number

   The nth pentagonal number p n is the number of distinct dots in a pattern of dots consisting of the outlines of regular pentagons with sides up to n dots, when the pentagons are overlaid so that they share one vertex. For instance, the third one is formed from outlines comprising 1, 5 and 10 dots, but the 1, and 3 of the 5, coincide with 3 of ...