Math Essentials, High School Level: Lessons and Activities for Test Preparation


Math Essentials, High School Level gives high school math teachers the tools they need to help prepare all types of students (including gifted and learning disabled) for standards-based mathematics testing. This dynamic book covers thirty key objectives found in a typical secondary mathematics curriculum, including algebraic thinking; graphs, statistics and probability; linear and quadratic functions and their properties; and geometry and measurement with applications. Each objective contains three lessons: ...

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Math Essentials, High School Level gives high school math teachers the tools they need to help prepare all types of students (including gifted and learning disabled) for standards-based mathematics testing. This dynamic book covers thirty key objectives found in a typical secondary mathematics curriculum, including algebraic thinking; graphs, statistics and probability; linear and quadratic functions and their properties; and geometry and measurement with applications. Each objective contains three lessons: manipulative, pictorial, and independent practice. Lessons include worksheets or patterns and answer keys, and each section ends with a practice test and answer key.

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What People Are Saying

From the Publisher
"This volume should be highly useful to all mathematics educatorsconcerned with increasing the achievement of students faced withhigh-stake tests based on currently accepted standards."
—David E. Boliver, professor of mathematics and statistics,University of Central Oklahoma

"The well-designed sequences of activities proceeding from theconcrete to pictorial to symbolic provide the needed structure forhelping students who struggle with high school math."
—Bill Juraschek, associate professor, University of Colorado atDenver

"The detailed step format helps both the novice and seasonedteacher appreciate the representations of algebraic, statistical,and geometric symbolism."
—Catheryne Draper, president, The Math Studio, Inc.

"The expertise that Dr. Thompson supplies to the field ofsecondary mathematics teaching is phenomenal. MathEssentials is a resource that will save countless hours ofresearch and preparation."
—Jim Wohlgehagen, secondary mathematics coordinator, Plano ISD,Plano, Texas

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Product Details

  • ISBN-13: 9780787966034
  • Publisher: Wiley
  • Publication date: 10/21/2005
  • Series: J-B Ed: Test Prep Series, #72
  • Edition number: 1
  • Pages: 384
  • Product dimensions: 8.58 (w) x 11.00 (h) x 1.09 (d)

Meet the Author

Frances McBroom Thompson, Ed.D., is professor of mathematics at Texas Woman's University. She has taught mathematics in junior and senior high schools and served as a K-12 mathematics specialist, and she is now an educational consultant for grades K-12. Dr. Thompson received her doctorate in mathematics education from the University of Georgia, and she is the author of numerous books including Hands-On Math!, Hands-On Algebra!, and Math Essentials, Middle School Level (all published by Jossey-Bass).

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Read an Excerpt

Math Essentials, High School Level

By Frances McBroom Thompson

John Wiley & Sons

Copyright © 2005 John Wiley & Sons, Inc.
All right reserved.

ISBN: 0-7879-6603-7

Chapter One

Section 1


Objective 1: Simplify Algebraic Expressions Involving One or Two Variables

Students have great difficulty recognizing the differences among linear, quadratic, and constant terms in algebraic form. Exponents seem insignificant to them. Viewing each type of term as an area helps students visualize the role each term plays in an expression. The following activities provide experience with such visualization in the combining of like terms. It is assumed that students have already mastered the four operations with integers.

Activity 1

Manipulative Stage


Packets of variable and unit tiles (described in step 1 below) Worksheet 1-1a Legal-sized plain paper or light tagboard (for building mats) Regular paper and pencils


1. Give each pair of students a packet of tiles, two copies of Worksheet 1-1a, and a sheet of plain paper or tagboard (approximately 8.5 inches by 14 inches) for a building mat. If preferred, laminate the mats to make them more durable. Mats define a specific space on which to represent a problem being solved. If teacher-made tiles are used, each packet should contain the following in different colors of laminated tagboard: 8 square (quadratic) variable tiles, each 3 inches by 3 inches (color #1); 8 square variable tiles, each 3.25 inches by 3.25 inches (color #2); 12 rectangular (linear) variable tiles, 0.75 inches by 3 inches (color #1); 12 rectangular variable tiles, 0.75 inch by 3.25 inches (color #2); and 20 unit tiles, 0.75 inch by 0.75 inch (color #3). Each tile should have a large X drawn on one side to show the inverse of that tile. Use tagboard that is thick enough so that the X will not show through to the other side. Commercial tiles are also available for two different variables, but a large X must be drawn on one of the largest faces of each tile in order to represent the inverse of that tile when the X faces up.

2. The meaning of a large square tile needs to be connected to a long rectangular tile of the same color. Have students place a rectangular variable tile of color #1 (call it variable A) horizontally on the mat. Then have them place two more variable tiles below and parallel to the first tile on the mat. Ask: "If a single variable tile A is considered to cover an area of 1 by A, or A, how can we describe the arrangement indicated by these tiles on the mat?" ("3 rows of A.") "What product or area is this?" ("3A.") Ask: "How can we show A rows of A on the mat if we do not know what the value of A is?" Show students how to build several rows of one variable tile each, using one variable tile A as the multiplier, or "ruler," that indicates when to stop putting tiles in the product on the mat (see the illustration below). When the product is finished, the multiplier tile should be removed from the mat. Depending on the dimensions used to make the tiles, whether commercial or teacher-made, the width across several rectangular tiles placed with their longer sides touching may or may not match the length of the longer side of the same type of tile. Such a match is not important and should be deemphasized since the variable tile A is not considered to have a specific length or value in unit tiles. Therefore, although the width of 4 of the variable tile A may appear to match to one variable tile length as shown on the mat below, do not allow students to say that 4 rows of A equal 4A.

3. Ask: "Is there another single block that will cover the same surface area on the mat that the product A of A, or A(A), covers?" ("Yes. The large square tile in color #1; its side length equals the length of the variable tile A.") Again, discuss the idea that the large square tile in color #1 may or may not fit perfectly on top of the "A rows of A" tile arrangement; it will be close enough. Since both the square and rectangular tiles in color #1 are representing variables without known values, we want to maintain their variable nature as much as possible. Physical models like the tiles naturally have specific dimensions that affect or limit areas being built with the tiles, but for our purpose, we will assume that only the unit tiles may be used to represent exact amounts of area. We will now assign the large square tile in color #1 the name of A-squared, or [A.sup.2]. Hence, A rows of A equal [A.sup.2]. From now on, whenever A rows of A are needed, the large square tile will be used to show that amount of area on the mat.

4. Similarly the areas of the square and long rectangular variable tiles in color #2 might be described as B-squared, or [B.sup.2], and B, respectively. If an X appears on the top side of a variable tile, the inverse or opposite of the tile's area will be indicated. For product example, a B-squared tile with X on top will be called "the opposite or inverse of B-squared" and written as (-[B.sup.2]). Each small square tile in color #3 represents an area of 1 by 1, or 1 square unit of area. If a given set of unit tiles all have an X showing-for example, 5 tiles with X-then the tile value will be the "negative of 5 square units of area" and written as (-5). Note that area itself is an absolute measure, neither positive nor negative. Area, however, can be assigned a direction of movement in real applications; hence, we can consider the opposite or negative of a given area.

5. After the area of each type of tile is identified, have students do the exercises on Worksheet 1-1a. For each exercise, they should place a set of tiles on the building mat to show the first expression. Then they will either add more tiles to this initial set or remove some tiles from the set according to the second expression of the exercise.

6. After combining tiles that have the same amount of area, students should record an expression for the total or remaining area on the worksheet.

7. Discuss an addition exercise and a subtraction exercise with the class before allowing students to work the other exercises independently.

Consider Exercise 1 on Worksheet 1-1a for addition: (3[A.sup.2] + 2A-5) + (-[A.sup.2] + 3A + 2) Use color #1 variable tiles with the color #3 unit tiles.

Have students place 3 large square (quadratic) variable tiles, 2 long rectangular (linear) variable tiles, and 5 negative unit tiles on the building mat to represent the first expression. Any such group of tiles is called a polynomial, that is, a combination of variable tiles and/or unit tiles. Leaving this set of tiles on the mat, have students place additional tiles on the mat below the initial tiles to represent the second expression. The second set should contain a quadratic variable tile with X showing, 3 linear variable tiles, and 2 unit tiles:

Ask: "Can any 0-pairs be made through joining, then removed from the mat?" (One 0-pair of the large quadratic tiles and two 0-pairs of the small unit tiles should be formed and removed from the building mat.) "Can you now describe the total in tiles still on the mat?" Since tiles for two of A-squared, 5 of A, and -3 remain on the mat, students should complete the recording of Exercise 1 on Worksheet 1-1a: (3[A.sup.2] + 2A -5) + (-[A.sup.2] + 3A + 2) = 2[A.sup.2] + 5A -3

Now consider Exercise 2 on Worksheet 1-1a for subtraction: (4[A.sup.2] -3A + 4)- ([A.sup.2] + 2A -2). Again, use color #1 variable tiles with the unit tiles.

Have students place tiles on their mats to show the first group. There should be 4 of the quadratic variable tile, 3 of the linear variable tile with the X-side showing for the inverse variable, and 4 positive unit tiles on the building mat. Discuss the idea that the subtraction symbol between the two polynomial groups means to remove each term in the second group from the first group. Ask: "Can we remove one quadratic variable tile from the original four? ("Yes; 3 quadratic variable tiles, or 3[A.sup.2], will remain.") "Can 2A be removed from -3A?" Since only inverse variable tiles are present initially, 0-pairs of A and -A tiles will need to be added to the mat until two of the variable A are seen. Then 2A can be removed, leaving 5 of -A on the mat. Similarly, -2 will be removed from +4 by first adding two 0-pairs of +1 and -1 to the mat. Then -2 can be removed from the mat, leaving +6. The mat arrangement of the initial tiles and the extra 0-pairs of tiles is shown here before any tile removal occurs. Have students complete Exercise 2 on Worksheet 1-1a by writing an expression for the tiles left on the mat: (4[A.sup.2] -3A + 4)-([A.sup.2] + 2A -2) = 3[A.sup.2] -5A + 6.

Remind students that when they use 0-pairs of a tile and remove one form of the tile (for example, positive), then the other form (for example, negative) remains to be added to the other tiles on the mat. Show students that when they needed to remove 2A from the mat earlier, two 0-pairs of A and -A were placed on the mat. After 2A was removed to show subtraction, the two inverse variable tiles, -2A, still remained on the mat to be combined with the other tiles for the final answer. Hence, a removal of a tile from the mat is equivalent to adding the inverse or opposite of that tile to the mat.

To confirm this, have students place the original group of tiles (4[A.sup.2] -3A + 4) on the mat again. The opposites needed (-[A.sup.2], -2A, and +2) should then be placed on the mat and combined with the original tiles. See the illustration below. Remove any 0-pairs formed, leaving tiles for 3[A.sup.2], -5A, and +6 on the mat as the answer. Finally, have students write another equation below Exercise 2 on Worksheet 1-1a, this time showing the alternate method that uses addition: (4[A.sup.2] - 3A + 4) + (-[A.sup.2]-2A = 3[A.sup.2]. - 5A + 6. Encourage students to use whichever of these two methods seems comfortable to them.

In the answer key for Worksheet 1-1a, when the coefficient of a final variable is 1, the number 1 will be written with the variable. This approach seems to be helpful to many students. Nevertheless, discuss the idea with the class that the 1 in such cases is often not recorded but simply understood as being there.

Answer Key for Worksheet 1-1a

1. 2[A.sup.2] + 5A - 3

2. 3[A.sup.2]-5A +6; alternate: (4[A.sup.2]-3A + 4 + (-[A.sup.2] - 2A + 2) = 3A.sup.2] -5A + 6

3. [3B.sup.2] + 2; alternate: (5[B.sup.2] + 3) + (-2[B.sup.2] - 1) = 3[B.sup.2] + 2

4. 2[A.sup.2] + 1A-4

5. 1[B.sup.2] + 2A - 8

6. 3A + 1[A.sup.2] + 5; alternate: 3A + ([A.sup.2] + 5) = 3A + 1[A.sup.2] + 5

7. I[A.sup.2]; alternate: (5[B.sup.2] - 4) + (-5[B.sup.2] + 4 + 1[A.sup.2])

8. 3A + 1[A.sup.2]-13+ 1B

Worksheet 1-1a

Building Sums and Differences Name ___________________ with Tiles Date ___________________

Build each polynomial exercise with tiles. Different variables require different tiles. Record the result beside the exercise. For each subtraction exercise, also write the alternate addition equation below the subtraction equation.

1. (3[A.sup.2] + 2A - 5) + (-[A.sup.2] + 3A + 2)

2. ([4A.sup.2] - 3A + 4) - ([A.sup.2]) + 2A - 2) =

3. (5[B].sup.2] + 3) - (2[B.sup.2] + 1) =

4. 2[A.sup.2] - 3A + 1) + (4A-5) =

5. (4A-2+[B.sup.2]) + (-6-2A)

6. 3A-(-[A.sup.2]-5)= 7. (5B.sup.2]-4)-(5[B.sup.2]-4[-[A.sup.2]) =

8. 3A-2[A.sup.2]-5+B-8+3[A.sup.2] =

Activity 2

Pictorial Stage Materials

Worksheet 1-1b Regular paper and pencil


1. Give each student a copy of Worksheet 1-1b. Have students work in pairs, but they should draw the diagrams separately on their own worksheets. Large squares will be drawn for the quadratic variable, a long rectangle whose length equals an edge length of the large square will be drawn for the linear variable, and a small square will represent the integral unit. A large X should be drawn in the interior of a shape to show the inverse of that shape. If an exercise involves two different variables, letters need to be written on the drawn shapes to identify the different variables. The product of two different variables, for example, A and B, should be shown as a large rectangle similar in size to the quadratic squares and labeled as AB. The notation AB simply means A rows of B, or the area AB.

2. For addition exercises, students should draw the required shapes and connect any two shapes that represent a 0-pair. The remaining shapes will be recorded in symbols to show the sum.

3. For subtraction exercises, students will be asked to use either the removal method or the alternate method, which involves addition of inverses. To remove a shape, students should mark out the shape. When needed, two shapes should be drawn together as a 0-pair. For the alternate method, inverses of the subtrahend expression should be drawn and combined with the first expression to produce a sum. The result will be recorded symbolically.

4. When checking students' work after all are finished, allow time for students to explain their steps; do not just check for answers. Students need to practice expressing their ideas mathematically. Such verbal sharing is also very beneficial to auditory learners.

5. Discuss Exercises 1 and 2 on Worksheet 1-1b with the class before allowing partners to work together on their own.

Consider Exercise 1: (-3[B.sup.2] + B + 2) + ([B.sup.2]-4B + 1)Students should draw the necessary shapes on their papers to represent each polynomial group. The shapes for the first polynomial group may be drawn in a row from left to right following the order of the given terms. The shapes for the second polynomial group should be drawn as a second row below the first row, but students may rearrange the shapes and draw them below other like shapes in the first row. Since only one variable is involved, no labeling is needed for the shapes. Any 0-pairs should be connected. Remaining shapes will then be counted and recorded as the answer. A sample drawing is shown here:

The final equation will be as follows and should be recorded on Worksheet 1-1b: (-3[B.sup.2] + B + 2) + ([B.sup.2] - 4B + 1) = -2[B.sup.2] -3B + 3. At this point, begin to encourage students to record the terms of a polynomial with their exponents in decreasing order.

Now consider Exercise 2: ([A.sup.2] + 5A - 3) - (2[A.sup.2] + 3A + 2). Since the removal process is required for this exercise, students should draw shapes for the first polynomial group and then draw any 0-pairs below that group, which will be needed in order to mark out the shapes shown in the second group. The shapes remaining or not marked out in the finished diagram will be the difference. Here is the completed diagram:

The final equation should be recorded on Worksheet 1-1b as follows: ([A.sup.2] + 5A - 3)- (2[A.sup.2] + 3A + 2) = -[A.sup.2] + 2A - 5. It may be helpful for some students to write -1[A.sup.2] instead of -[A.sup.2] . This is acceptable notation.

Answer Key for Worksheet 1-1b

Only symbolic answers may be given.

1. -2[B.sup.2] + 3 - 3B + 3(see sample diagram in text)

2. -[A.sup.2] + 2A - 5 (see sample diagram in text)

3. 5[A.sup.2]-2A + 6

4. -3A-2B +1

5. 2[A.sup.2] + 3[B.sup.2]-2


Excerpted from Math Essentials, High School Level by Frances McBroom Thompson Copyright © 2005 by John Wiley & Sons, Inc.. Excerpted by permission.
All rights reserved. No part of this excerpt may be reproduced or reprinted without permission in writing from the publisher.
Excerpts are provided by Dial-A-Book Inc. solely for the personal use of visitors to this web site.

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Table of Contents

Additional Objectives.

Notes to the Teacher.

About the Author.



1. Simplify algebraic expressions involving one or twovariables.

2. Solve a linear equation involving one variable with afractional coefficient.

3. State an equation with one or more variables that represent alinear relationship in a given situation; apply the equation tosolve the problem, if appropriate.

4. Apply number properties to solve word problems.

5. Apply ratio and proportion to solve numeric problems orproblems involving variables.

6. Identify two given linear equations, given in algebraic formor graphic form, as parallel, perpendicular, or with the samex- or y-intercept.

7. Identify algebraic equations or graphs needed to represent asystem of linear equations described in a given situation; solvethe system by a substitution method or a graphical method.

Practice Test.



1. Find the probability of a compound event (independent ordependent).

2. Interpret the actions represented by a linear or a quadraticgraph or a scatter plot.

3. Find the ordered pairs for the x- andy-intercepts of a given linear equation in two variableseither algebraically or graphically.

4. Find the slopes of one or two lines on a grid and from givenequations.

5. Match a graph without a given scale to the relationshipdescribed by a given situation.

6. Apply linear inequalities to solve real-world problems; matcha linear inequality in two variables to its graph.

Practice Test.



1. Find solutions to linear functions of the general formy = ax + b.

2. Find specific solutions for a given quadratic function inorder to solve a problem.

3. Recognize and apply the general forms of linear and quadraticparent functions.

4. Find an algebraic expression for the generalization or rulerepresented by linear data collected or given in a table; extendthe table or sequence to new values, using the rule or numberpatterns.

5. Find an algebraic expression for the generalization or rulerepresented by quadratic data collected or given in a table; extendthe table or sequence to new values, using the rule or numberpatterns.

6. Identify the domain, range, intercepts, and other propertiesof a function from a given graph, equation, or situation.

Practice Test.



1. Apply the circumference and area of a circle to solve areal-world problem.

2. Apply the area of parallelograms and triangles to solvereal-world problems.

3. Apply special angle and shape properties to solve areal-world problem involving variables.

4. Apply the Pythagorean theorem to solve geometric problemswith or without variables.

5. Find missing measures using similar two-dimensionalshapes.

6. Apply ratio and proportion to solve geometric problems.

7. Find the area of a composite two-dimensional shape by usingrectangles and triangles.

8. Recognize characteristics of three-dimensional shapes(cylinders, prisms, pyramids, and cones).

9. Apply the volume of prisms or cylinders to solve real-worldproblems.

10. Find dimensions or other measures of a right rectangularprism that correspond to dimensions or measures of a similar givenprism.

11. Find the volume of a composite three-dimensional shape byapplying perspectives and side views of rectangular prisms.

Practice Test.

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