Insights Into Algebra 1 . Workshop 7

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Workshop 7 Direct and Inverse Variation

Lesson Plans

Lesson Plans:

Introduction

Lesson Plan 1: Be Direct - Oil Spills on Land

Lesson Plan 2: Very Varied - Inverse Variation

Download the Workshop 7 Guide

Lesson Plan 1: Be Direct - Oil Spills on Land

Overview:
This lesson teaches students about direct variation by allowing them to explore a simulated oil spill using toilet paper tissues (to represent land) and drops of vegetable oil (to simulate a volume of oil). This lesson plan is based on the activity used by teacher Peggy Lynn in Part I of the Workshop 7 video.

Time Allotment:
One to two 50-minute periods

Subject Matter:
Direct variation
Linear functions

Learning Objectives:
Students will be able to:

Describe the primary characteristics of a direct variation.
Explain why the relationship between the volume of oil and the area of land it covers represents a direct variation.
Recognize situations in other contexts that are direct variations (such as the relationship between circumference and diameter).
Give examples of real-world direct variations besides those studied in class.
Define direct variation and constant of proportionality.

Standards:
Principles and Standards for School Mathematics, National Council of Teachers of Mathematics (NCTM), 2000:

NCTM Algebra Standard for Grades 6-8
http://standards.nctm.org/document/chapter6/alg.htm

NCTM Algebra Standard for Grades 9-12
http://standards.nctm.org/document/chapter7/alg.htm

Next: Procedures for Teachers

Insights into Algebra 1

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