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    Manipulatives are things which are held and moved and represent or model mathematical ideas. With them, one can "hold" ideas in one's hands making the abstract more concrete.

    These manipulatives are an elegantly simple way of thinking about ideas usually discussed in algebra I, algebra II, precalculus and calculus. The manipulatives provide the tools. The book Exploring Functions through The Use of Manipulatives tells you how to use them and contains a set of masters.

•Exploring Functions through the Use of Manipulatives, written by Agnes Azzolino, is a collection of activities and a set of masters for exploring functions in a hands-on approach. Communication and introduction to functions, translation, reflection, and dilation of functions, solution of equations and systems, slope, and the composition of functions are explored at length. An appendix containing a function library and masters of the Graphing With Manipulatives are included. ISBN: 0-9623593-3-5, 100 pg., 1994

EF .. $ 45.00 + $ 5.40 [in US shipping] + $ 2.70 [NJ tax]

Second Product

•Teacher Demonstration Pack is ideal for a teacher who wishes to supplement a lecture with visuals, to complete demonstrations on the overhead projector, or to learn to use manipulatives. It contains:

• 1 Overhead Projector Coordinate Plane,
• 1 Demo Pack, [See the detailed description below.]
• 2 Parent Function Packs, [See the detailed description below.]
• Additional Functions: 2 secant-cosecant, 2 tangent-cotangent, 8 parabolic dilations,
• graph paper masters: 1-plane paper, 2-planes-per-page, 4-planes-per-page.

tp ... $70 + $8.40 + $4.20

Third Product

A 10-Pack contain materials for 10 students. Four different 10-Packs are available.

The Demo Pack 10-Pack has 10 plastic pockets each containing basic materials for 1 student. These include:

• 1 large paper Coordinate Plane (which serves as a work area),
• 1 Slopemeter, a tool to measures slope,
• 1 Absolute Value Dilator, to form dilations of the absolute value function,
• 1 Isolator, to identify a neighborhood, and a
• blank sheet of transparent film for making your own functions.

The Demo Pack 10-Pack also includes one transparent Coordinate Plane for use on an overhead projector.

Demo Pack 10-Pack dp10 ........ $100.00 + $ 12 [in US shipping] + $6 [NJ tax]

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