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  2. Science Buddies - Wikipedia

    en.wikipedia.org/wiki/Science_Buddies

    Science Buddies, formerly the Kenneth Lafferty Hess Family Charitable Foundation, is a non-profit organization that provides a website of free science project productivity tools and mentoring to support K-12 students, especially for science fairs. Founded in 2001 by engineer and high-tech businessman, Kenneth Hess, Science Buddies features STEM ...

  3. Science, technology, society and environment education

    en.wikipedia.org/wiki/Science,_technology...

    Science, technology, society and environment (STSE) education, originates from the science technology and society (STS) movement in science education. This is an outlook on science education that emphasizes the teaching of scientific and technological developments in their cultural, economic, social and political contexts.

  4. Worksheet - Wikipedia

    en.wikipedia.org/wiki/Worksheet

    In accounting, a worksheet is, or was, a sheet of ruled paper with rows and columns on which an accountant could record information or perform calculations. These are often called columnar pads, and typically green-tinted. In office software, spreadsheet software presents, on a computer monitor, a user interface that resembles one or more paper ...

  5. Chemistry - Wikipedia

    en.wikipedia.org/wiki/Chemistry

    Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.

  6. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    Mathematical notation is widely used in science and engineering for representing complex concepts and properties in a concise, unambiguous, and accurate way. This notation consists of symbols used for representing operations , unspecified numbers, relations and any other mathematical objects, and then assembling them into expressions and ...

  7. Second grade - Wikipedia

    en.wikipedia.org/wiki/Second_grade

    In the United States, second grade students study arithmetic, working with multi-digit addition and subtraction of natural and whole numbers. They also study time and its division into AM and PM segments; fractions; rounding; and measurement. Usually, multiplication and division are introduced toward the end of the school year.

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