id: 02351498
dt: j
an: 2003c.02491
au: Van Dyke, Frances
ti: Activities: Using graphs to introduce functions.
so: Math. Teach. (Reston) 96, No. 2, 126-137 (2003).
py: 2003
pu: National Council of Teachers of Mathematics (NCTM), Reston, VA
la: EN
cc: I23
ut: 
ci: 
li: 
ab: One idea for linking the representations and highlighting the importance of
    graphs is to introduce the concept of function using graphs, or
    pictorial representations of functions. A natural progression exists
    from qualitative graphs to quantitative graphs to tables to equations.
    Students become comfortable with functions that are introduced using
    this progression. This article presents four activities that use this
    progression to introduce the theme of distance from an object as a
    function of time. (orig.)
rv: