Did you know your student could lose anywhere from two to two and a half months worth of math knowledge over the summer months? By enrolling your student at

Mathnasium now, they can move ahead in their class and continue to

learn new things.

Refresh their (and your) knowledge with key terms from the

*Mathnasium Glossary* below.

**addition** counting "how many altogether." The process of forming a whole.

**complement** "the rest of it." the remaining part with respect to the whole.

**counting** the process of determining quantity (how many, how much).

**denomination** the collective name of a group of similar things (apples, dogs, inches).

**division** counting "how many of these are there inside of that." The process of separating a whole into equal parts.

**fraction** the result of breaking a whole into equal parts; one or more of those equal

**group** one or more of the same thing (1 apple, 9 dogs, 5 inches, 8 things).

**half** the first fraction. A whole divided into two equal parts; one of those parts. "Two parts the same."

**interval** the distance from one number (or unit) to another. The space between two numbers.

**Law of SAMEness** It is only possible to add and subtract things of the same kind, things with the same name, the same denomination (an apple plus a banana is not a "banapples").

**mathematics** the study of wholes and parts, and the relationship between them.

**matrix** literally, "mother." That which gives form, origin, or foundation to something enclosed or embedded in it. A place of origin and growth. Related words include environment, framework, womb, structure, model; enclosed, enveloping, surrounding.

**measurement** the determining of quantity.

**multiplication** counting "in equal groups." The process of forming a whole from equal groups.

**part **a component of the whole. A fragment, fraction, section, portion, region; a piece broken off.

**percent** literally, "for each 100," "parts per hundred," "how many for each hundred."

**proportion** literally, "according to amount." The relation of one part to another or to the whole; relative size. Comparison, analogy, balance, symmetry.

**ratio** a comparsion of two numbers by division.

**subtraction** counting "how far apart two numbers are" and "how much is left." The process of removing a part(s) from a whole.

**whole **undivided. The one composed of the many. That which can be broken-down into parts. All of the quantity under consideration.

**zero** the number that counts none. That which has no parts.