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A function is a rule which maps a number to another unique number. In other words, if we start off with an input, and we apply the function, we get an output. For example, we might have a function that added 3 to any number. So if we apply this function to the number 2, we get the number 5.
Symbol and Cue Cards. Create a set of symbol cards and matching cue cards as shown on the following pages. Symbol cards: Cards containing math terms, expressions, equations, etc. Cue cards: Cards containing phrases that match one or more of the symbol cards.
3. Students represent the term in a drawing or some form of representation. Students can draw pictures, link words to symbols or even use gestures to describe what a term means. 4. Teacher expands and refines the use of the word. See activities on the menu. 5. Find opportunities for students to discuss words and phrases with peers.
Define, evaluate, and compare functions. Understand that a function is a rule that assigns to each input exactly one output. The graph of a function is the set of ordered pairs consisting of an input and the corresponding output.
This section will show you how to: understand and use the terms: function, domain, range (image set), function and composition of functions. use the notation f( x ) = 2 x 3 + 5 , f : x ↦ 5 x − 3 , f − 1 ( x ) and f 2 ( x ) understand the relationship between y = f( x ) and y = |f( x )|.
This glossary contains words and phrases from Fourth through Sixth Grade Everyday Mathematics. To place the definitions in broader mathematical contexts, most entries also refer to sections in this Teacher’s Reference Manual.
Mary Radcli e. 1 Basics. We begin this discussion of functions with the basic de nitions needed to talk about functions. De nition 1. Let X and Y be sets. A function f from X to Y is an object that, for each element x 2 X, assigns an element y 2 Y . We use the notation f : X ! Y to denote a function as described.
