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  2. Word problem (mathematics education) - Wikipedia

    en.wikipedia.org/wiki/Word_problem_(mathematics...

    Word problem from the Līlāvatī (12th century), with its English translation and solution. In science education, a word problem is a mathematical exercise (such as in a textbook, worksheet, or exam) where significant background information on the problem is presented in ordinary language rather than in mathematical notation.

  3. Tape diagram - Wikipedia

    en.wikipedia.org/wiki/Tape_diagram

    A tape diagram is a rectangular visual model resembling a piece of tape, that is used to assist with the calculation of ratios and addition, subtraction, and commonly multiplication.

  4. Magic triangle (mathematics) - Wikipedia

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

    A magic triangle or perimeter magic triangle [1] is an arrangement of the integers from 1 to n on the sides of a triangle with the same number of integers on each side, called the order of the triangle, so that the sum of integers on each side is a constant, the magic sum of the triangle.

  5. Perimeter - Wikipedia

    en.wikipedia.org/wiki/Perimeter

    A perimeter is a closed path that encompasses, surrounds, or outlines either a two dimensional shape or a one-dimensional length. The perimeter of a circle or an ellipse is called its circumference. Calculating the perimeter has several practical applications. A calculated perimeter is the length of fence required to surround a yard or garden.

  6. Word problem - Wikipedia

    en.wikipedia.org/wiki/Word_problem

    Word problem (mathematics education), a type of textbook exercise or exam question to have students apply abstract mathematical concepts to real-world situations; Word problem (mathematics), a decision problem for algebraic identities in mathematics and computer science; Word problem for groups, the problem of recognizing the identity element ...

  7. Small cancellation theory - Wikipedia

    en.wikipedia.org/wiki/Small_cancellation_theory

    Finitely presented groups given by finite C(4)–T(4) presentations where every piece has length one are basic examples of CAT(0) groups: for such a presentation the universal cover of the presentation complex is a CAT(0) square complex. Early applications of small cancellation theory involve obtaining various embeddability results.

  8. Area - Wikipedia

    en.wikipedia.org/wiki/Area

    If the lengths of the three sides are known then Heron's formula can be used: () () where a, b, c are the sides of the triangle, and = (+ +) is half of its perimeter. [2] If an angle and its two included sides are given, the area is 1 2 a b sin ⁡ ( C ) {\displaystyle {\tfrac {1}{2}}ab\sin(C)} where C is the given angle and a and b are its ...

  9. Intermediate Math League of Eastern Massachusetts - Wikipedia

    en.wikipedia.org/wiki/Intermediate_Math_League...

    Area and perimeter of polygons GCF, LCM, prime factorization Fractions, terminating and repeating decimals, percents Word problems with 1 unknown; working with formulas; reasoning in number sentences 3 ? Properties of polygons; Pythagorean Theorem Bases, scientific notation Integral powers (positive, negative, and zero), roots up to the sixth

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