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Demonstrative
DEFINITION: Pronouns that point to specific things: this, that, these, and those, as in “This is an apple,” “Those are boys,” or “Take these to the clerk.” The same words are used as demonstrative adjectives when they modify nouns or pronouns: “this apple,” “those boys.” HOW TO: This, That, These, and those are examples of Demonstrative Pronouns. Everyday Use: Demonstrative pronouns are used in every day speech and reading and writing.
Square Roots & Radicals
Square roots and radicals A square root is defined as a number which when multiplied by itself gives a real non-negative number called a square. A square root is best defined using geometry where, considering a square (which is a four sided polygon whose sides are all equal), a square root is defined as the length of the diagonal of this square (a diagonal is a line drawn from one vertex/corner to the opposite vertex of the square). A radical is a root of a number. A square root is a radical. Roots can be square roots, cube roots, fourth roots and so on. Where is known as the radical sign and is known as the radicand. Khan Link: https://www.khanacademy.org/math/algebra/rational-exponents-and-radicals/alg1-simplify-square-roots/v/simplifying-square-roots-1