Teaching Algebra with Manipulatives

Teaching Algebra with Manipulatives

For use with Glencoe Algebra 1 Glencoe Algebra 2

Manipulatives

Glencoe offers three types of kits to enhance the use of manipulatives in your Pre-Algebra classroom.

? The Glencoe Mathematics Overhead Manipulative Resources contains translucent manipulatives designed for use with an overhead projector.

? The Glencoe Mathematics Classroom Manipulative Kit contains classroom sets of frequently used manipulatives in algebra, geometry, measurement, probability, and statistics.

? The Glencoe Mathematics Student Manipulative Kit contains an individual set of manipulatives often used in Student Edition activities.

The manipulatives contained in each of these kits are listed on page viii of this booklet.

Each of these kits can be ordered from Glencoe by calling (800) 334-7344.

Glencoe Mathematics Overhead Manipulative Resources Glencoe Mathematics Classroom Manipulative Kit Glencoe Mathematics Student Manipulative Kit

0-07-830593-4 0-02-833116-8 0-02-833654-2

Glencoe/McGraw-Hill

Copyright ? by The McGraw-Hill Companies, Inc. All rights reserved. Printed in the United States of America. Permission is granted to reproduce the material contained herein on the condition that such material be reproduced only for classroom use; be provided to students, teachers, and families without charge; and be used solely in conjunction with Glencoe Algebra 1 or Glencoe Algebra 2. Any other reproduction, for use or sale, is prohibited without prior written permission of the publisher.

Send all inquiries to: Glencoe/McGraw-Hill 8787 Orion Place Columbus, OH 43240

ISBN: 0-07-827755-8

Teaching Algebra with Manipulatives

1 2 3 4 5 6 7 8 9 10 079 11 10 09 08 07 06 05 04 03 02

Contents

Easy-to-Make Manipulatives

Page

Grid Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Centimeter Grid Paper . . . . . . . . . . . . . . . . . . . . .2

10 10 Centimeter Grids . . . . . . . . . . . . . . . . . . .3

Coordinate Planes . . . . . . . . . . . . . . . . . . . . . . . .4

Coordinate Planes in Space . . . . . . . . . . . . . . . . .5

Coordinate Planes for Trigonometric Functions

(degrees) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Coordinate Planes for Trigonometric Functions

(radians) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Conic Graph Paper -- circles and lines . . . . . . . .8

Conic Graph Paper -- overlapping circles . . . . . .9

Algebra Tiles -- units . . . . . . . . . . . . . . . . . . . . .10

Algebra Tiles -- variables . . . . . . . . . . . . . . . . .11

Integer Models Summary . . . . . . . . . . . . . . . . . .12

Polynomial Models Summary . . . . . . . . . . . . . . .13

Equation Models Summary . . . . . . . . . . . . . . . .14

Integer Mat . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Equation Mat . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Product Mat . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Rectangular Dot Paper . . . . . . . . . . . . . . . . . . . .18

Isometric Dot Paper . . . . . . . . . . . . . . . . . . . . . .19

Problem Solving Guide . . . . . . . . . . . . . . . . . . .20

Spinners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Die Patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Protractors . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Rulers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Normal Distribution Curve . . . . . . . . . . . . . . . . .25

Algebra 1

Activities

Page

CHAPTER 1

Teaching Notes and Overview . . . . . . 27

1-2 Mini-Project: Evaluating Expressions .30

1-5 Using Overhead Manipulatives:

Distributive Property . . . . . . . . . . .31

1-5 Algebra Activity Recording Sheet . . . .33

1-7 Algebra Activity: Make a Model . . . . .34

1-8 Algebra Activity Recording Sheet . . . .35

CHAPTER 2 Teaching Notes and Overview . . . . . . 36

2-2 Mini-Project: Adding and Subtracting Integers . . . . . . . . . . . . . . . . . . . . .39

2-2 Using Overhead Manipulatives: Adding and Subtracting Integers . . .40

2-3 Using Overhead Manipulatives: Multiplying Integers . . . . . . . . . . . .42

2-4 Algebra Activity: Multiplying and Dividing Rational Numbers . . . . . .43

2-5 Using Overhead Manipulatives: Measures of Central Tendency . . . .45

2-5 Using Overhead Manipulatives: Statistics and Line Plots . . . . . . . . .46

2-6 Using Overhead Manipulatives: Experimental Probability . . . . . . . .48

2-6 Algebra Activity Recording Sheet . . . . . . . . . . . . . . . . . . . . . . .49

CHAPTER 3 Teaching Notes and Overview . . . . . . 50

3-1 Algebra Activity Recording Sheet . . . .56 3-1 Algebra Activity: Formulas . . . . . . . . .57 3-2 Algebra Activity Recording Sheet . . . .59 3-2 Using Overhead Manipulatives:

Solving Equations by Using Addition and Subtraction . . . . . . . .60 3-2 Mini-Project: Using Logic . . . . . . . . . .65 3-3 Using Overhead Manipulatives: Solving Equations by Using Multiplication and Division . . . . . 66 3-4 Algebra Activity Recording Sheet . . . .68 3-4 Using Overhead Manipulatives: Solving Equations Using More Than One Operation . . . . . . . . . . . .69 3-4 Algebra Activity: Solving Equations . . .1 3-5 Using Overhead Manipulatives: Solving Equations with the Variable on Both Sides . . . . . . . . . . . . . . . . .73 3-6 Using Overhead Manipulatives: Proportions . . . . . . . . . . . . . . . . . . .75 3-6 Using Overhead Manipulatives: Solving Percent Problems . . . . . . . .76 3-7 Using Overhead Manipulatives: Percent of Change . . . . . . . . . . . . .77 3-7 Mini-Project: The Music Business . . . .79 3-8 Algebra Activity: Mixture Problems . .80

CHAPTER 4 Teaching Notes and Overview . . . . . . 82

4-3 Using Overhead Manipulatives: Relations . . . . . . . . . . . . . . . . . . . .85

4-3 Algebra Activity Recording Sheet . . . .86 4-5 Using Overhead Manipulatives:

Graphing Linear Relations . . . . . . .87 4-6 Using Overhead Manipulatives:

Functions . . . . . . . . . . . . . . . . . . . .88 4-6 Mini-Project: Functions or Not? . . . . .89 4-8 Algebra Activity Recording Sheet . . . .90 4-8 Algebra Activity: Functions . . . . . . . .91

CHAPTER 5 Teaching Notes and Overview . . . . . . 93

5-1 Using Overhead Manipulatives: Find the Slope of a Line . . . . . . . . .96

5-3 Algebra Activity Recording Sheet . . . .98 5-3 Using Overhead Manipulatives: Slope-

Intercept Form of Linear Equations 99 5-5 Using Overhead Manipulatives:

Linear Equations in Point-Slope and Standard Form . . . . . . . . . . .100

iii

Algebra 1

Activities

Page

5-6 Algebra Activity: Perpendicular

Lines . . . . . . . . . . . . . . . . . . . . . .102

5-6 Algebra Activity Recording Sheet . . .104

5-7 Algebra Activity Recording Sheet . . .105

5-7 Using Overhead Manipulatives:

Scatter Plots . . . . . . . . . . . . . . . . .106

5-7 Mini-Project: Scatter Plots . . . . . . . .107

CHAPTER 6 Teaching Notes and Overview . . . . . 108

6-1 Using Overhead Manipulatives: Solving Inequalities Using Addition and Subtraction . . . . . . .111

6-1 Mini-Project: Multiplying Inequalities by 1 . . . . . . . . . . . .114

6-2 Algebra Activity Recording Sheet . . .115 6-4 Algebra Activity: Compound

Inequalities . . . . . . . . . . . . . . . . . .116 6-5 Algebra Activity Recording Sheet . . .119 6-6 Using Overhead Manipulatives:

Graphing Inequalities . . . . . . . . . .120

CHAPTER 7 Teaching Notes and Overview . . . . . 122

7-1 Mini-Project: Comparing Options . . .124 7-2 Algebra Activity Recording Sheet . . .125 7-3 Using Overhead Manipulatives:

Elimination Using Addition and Subtraction . . . . . . . . . . . . . . . . . .126 7-5 Algebra Activity: Graphing Systems of Inequalities . . . . . . . . . . . . . . . .127

CHAPTER 8 Teaching Notes and Overview . . . . . 129

8-1 Using Overhead Manipulatives: Multiplying Monomials . . . . . . . .134

8-1 Algebra Activity Recording Sheet . . .135 8-4 Algebra Activity Recording Sheet . . .136 8-5 Algebra Activity Recording Sheet . . .137 8-5 Using Overhead Manipulatives: Adding

and Subtracting Polynomials . . . . .138 8-5 Mini-Project: Multiplying Binomials .141 8-6 Using Overhead Manipulatives:

Multiplying a Polynomial by a Monomial . . . . . . . . . . . . . . . . . . .142 8-7 Algebra Activity Recording Sheet . . .144 8-7 Using Overhead Manipulatives: Multiplying Polynomials . . . . . . . .145 8-7 Algebra Activity: Multiplying Polynomials . . . . . . . . . . . . . . . . .147 8-8 Using Overhead Manipulatives: Three Special Products . . . . . . . . .149 CHAPTER 9 Teaching Notes and Overview . . . . . 152 9-2 Algebra Activity Recording Sheet . . .156 9-3 Algebra Activity Recording Sheet . . .159 9-3 Using Overhead Manipulatives: Factoring Trinomials . . . . . . . . . . .160

9-4 Using Overhead Manipulatives: Factoring Trinomials . . . . . . . . . . .162

9-4 Algebra Activity: Factoring Trinomials . . . . . . . . . . . . . . . . . .163

9-5 Using Overhead Manipulatives: Factoring Differences of Squares .165

9-5 Algebra Activity Recording Sheet . . .167 9-6 Using Overhead Manipulatives:

Factoring Perfect Square Trinomials . . . . . . . . . . . . . . . . . .168 9-6 Mini-Project: Factoring Trinomial Squares . . . . . . . . . . . . . . . . . . . . .170 9-6 Algebra Activity: Factoring Trinomial Squares . . . . . . . . . . . .171

CHAPTER 10 Teaching Notes and Overview . . . . . 173

10-1 Algebra Activity Recording Sheet . . .176 10-1 Mini-Project: Graphing Quadratic

Functions . . . . . . . . . . . . . . . . . . .177 10-3 Using Overhead Manipulatives:

Solving Quadratic Equations by Completing the Square . . . . . . .178 10-5 Algebra Activity: A Fascinating Fold .180 10-7 Algebra Activity Recording Sheet . . .181 10-7 Algebra Activity Recording Sheet . . .182

CHAPTER 11 Teaching Notes and Overview . . . . . 183

11-2 Mini-Project: Matching Radicals . . . .185 11-4 Using Overhead Manipulatives: The

Pythagorean Theorem . . . . . . . . . .186 11-4 Algebra Activity: The Pythagorean

Theorem . . . . . . . . . . . . . . . . . . . .187 11-4 Using Overhead Manipulatives:

Graphing Irrational Numbers . . . .189 11-6 Using Overhead Manipulatives:

Similar Triangles . . . . . . . . . . . . .190 11-7 Algebra Activity Recording Sheet . . .191 11-7 Algebra Activity Recording Sheet . . .192

CHAPTER 12 Teaching Notes and Overview . . . . . 193

12-5 Using Overhead Manipulatives: Dividing Polynomials by Monomials and by Binomials . . . .195

12-5 Algebra Activity Recording Sheet . . .197 12-9 Mini-Project: Rational Roundup . . . .198

CHAPTER 13 Teaching Notes and Overview . . . . . 199

13-3 Algebra Activity: Modeling Data . . . .200 13-5 Algebra Activity Recording Sheet . . .203

CHAPTER 14 Teaching Notes and Overview . . . . . 204

14-1 Algebra Activity Recording Sheet . . .206 14-3 Algebra Activity: Probability and

Compound Events . . . . . . . . . . . .207

iv

Algebra 1

Activities

Page

14-5 Algebra Activity: Theoretical and

Experimental Probability . . . . . . .208

14-5 Algebra Activity Recording Sheet . . .209

Algebra 2

Activities

Page

CHAPTER 1

Teaching Notes and Overview . . . . . 210

1-2 Algebra Activity Recording Sheet . . .212

1-2 Algebra Activity Recording Sheet . . .213

1-3 Algebra Activity: Solving Equations .214

1-6 Mini-Project: Solving Absolute Value

Inequalities . . . . . . . . . . . . . . . . . .216

CHAPTER 2 Teaching Notes and Overview . . . . . 217

2-5 Algebra Activity Recording Sheet . . .218 2-6 Mini-Project: Graphing Absolute

Value Functions . . . . . . . . . . . . . .219

CHAPTER 3 Teaching Notes and Overview . . . . . 220

3-2 Mini-Project: Solving Systems of Equations by Elimination . . . . . . .222

3-3 Algebra Activity: Graphing Systems of Inequalities . . . . . . . . . . . . . . . .223

3-5 Algebra Activity Recording Sheet . . .225 3-5 Algebra Activity: Equations of Planes 226

CHAPTER 4 Teaching Notes and Overview . . . . . .228

4-1 Algebra Activity: Matrices . . . . . . . .229 4-3 Mini-Project: Determinants . . . . . . . .231

CHAPTER 5 Teaching Notes and Overview . . . . . .232

5-2 Algebra Activity Recording Sheet . . .234 5-4 Algebra Activity Recording Sheet . . .235 5-5 Algebra Activity: Radical Roots of

Polynomials . . . . . . . . . . . . . . . . .236 5-6 Algebra Activity Recording Sheet . . .238 5-9 Mini-Project: nth Roots of Negative

Numbers . . . . . . . . . . . . . . . . . . . .239 5-9 Algebra Activity Recording Sheet . . .240

CHAPTER 6 Teaching Notes and Overview . . . . . .241

6-1 Mini-Project: Parabolas . . . . . . . . . . .243 6-4 Algebra Activity Recording Sheet . . .244 6-4 Algebra Activity: Completing the

Square . . . . . . . . . . . . . . . . . . . . .245 6-6 Algebra Activity: Quadratic

Functions . . . . . . . . . . . . . . . . . . .247

CHAPTER 7 Teaching Notes and Overview . . . . . .249

7-4 Mini-Project: Synthetic Substitution and Zeros . . . . . . . . . . . . . . . . . . .252

7-7 Algebra Activity: Exploring Iteration . . . . . . . . . . . . . . . . . . . .253

7-8 Algebra Activity: Inverse Relations . .256 7-8 Algebra Activity Recording Sheet . . .258

CHAPTER 8 Teaching Notes and Overview . . . . . .259

8-1 Algebra Activity Recording Sheet . . .263 8-2 Algebra Activity Recording Sheet . . .264 8-2 Mini-Project: Conics . . . . . . . . . . . . .265 8-4 Algebra Activity Recording Sheet . . .266 8-4 Algebra Activity Recording Sheet . . .267 8-6 Algebra Activity: Conic Sections . . . .268 8-6 Algebra Activity Recording Sheet . . .270

CHAPTER 9 Teaching Notes and Overview . . . . . .271

9-1 Mini-Project: Interpreting Powers of a Binomial Geometrically . . . . . . . . . . . . . . . .272

9-3 Algebra Activity Recording Sheet . . .273

CHAPTER 10 Teaching Notes and Overview . . . . . .274

10-1 Algebra Activity Recording Sheet . . .275 10-1 Algebra Activity: Exponential

Functions . . . . . . . . . . . . . . . . . . .276 10-6 Mini-Project: Graceful Numbering

of Graphs . . . . . . . . . . . . . . . . . . .278

CHAPTER 11 Teaching Notes and Overview . . . . . .279

11-1 Mini-Project: Sequences . . . . . . . . . .282 11-1 Algebra Activity Recording Sheet . . .283 11-6 Algebra Activity Recording Sheet . . .284 11-6 Algebra Activity Recording Sheet . . .285 11-6 Algebra Activity: Investigating

Fractal Cut Outs . . . . . . . . . . . . . .286

CHAPTER 12 Teaching Notes and Overview . . . . . .288

12-4 Algebra Activity Recording Sheet . . .291 12-4 Algebra Activity: Probability . . . . . . .292 12-8 Mini-Project: Probability . . . . . . . . . .294 12-8 Algebra Activity Recording

Sheet . . . . . . . . . . . . . . . . . . . . . .295 12-9 Algebra Activity Recording

Sheet . . . . . . . . . . . . . . . . . . . . . .296

CHAPTER 13 Teaching Notes and Overview . . . . . .297

13-1 Algebra Activity: Indirect Measurement . . . . . . . . . . . . . . . .299

13-2 Algebra Activity Recording Sheet . . .301 13-6 Mini-Project: Linear Interpolation

by Graphing . . . . . . . . . . . . . . . . .302

CHAPTER 14 Teaching Notes and Overview . . . . . .303

14-7 Mini-Project: Trigonomessage . . . . . .304

v

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