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Pre-Algebra Course STARPREP® MATHEMATICS PROGRAMSPre-Algebra™

Pre-Algebra™ introduces students to variables, algebraic expressions, equations, inequalities, functions, and all their multiple representations. In this class, students will develop the ability to explore and solve real-world application problems, demonstrate the appropriate use of graphing calculators, and communicate mathematical ideas clearly. This course lays the foundation for mathematical literacy that will help students be successful in every subsequent course in mathematics.

Pre-Algebra™

STARPREP®에서 제공하는 Pre-Algebra Course - Elementary Upper grades to Middle School 프로그램은
Boosting GPA for School Exams 내신성적 향상수업과 GPA Boost for Concepts 개념위주 수업
을 제공하며 학생 요구(Needs)에 따라 최적의 수업진행을 선택할 수 있습니다.

[학생의 성적/수업 이해도에 따라 수업이 진행됩니다.]

수업은 Algebra 1 이전 수업으로 Grade 5, Grade 6, Grade 7 학생들에게 적합합니다.
단 PreAlgebra과정을 마친 학생은 Algebra 1 수업을 신청하면 됩니다.

for Graders 5-7
(STARPREP® course code: PREAL)


Professor
Myung-Soo Go
University of Virginia, BS
Johns Hopkins University, MS
석사 학위 취득
Mathematics Expert 수학전문강사 5년 이상 경력

Professor
Seongyoon Hong
Seoul National University BS
Seoul National University 석사 졸업
Seoul National University Ph.D. 수료
Mathematics Expert 수학전문강사 6년 이상 경력

Professor
SooHyun
Seoul National University
서울대학교 이학학사
Mathematics Expert 수학전문강사 경력

Professor
Min-Jae Kim
Yonsei University
연세대학교 이학학사
Mathematics Expert 수학전문강사 경력

Professor
Jerome Lee, Ph.D.
MIT RSI Representative (2012-2022) 11년 역임
MIT Mathematical Physics 전공
KAIST 공학 박사학위 취득
Private Tutoring 20+년 경력

Registration Board

High School Pre-Algebra™

  • Lecture Dates/Registration Status
  • June 17 - August 23, 2024
    Mon/Wed/Fri
    2:00pm-5:00pm

    ★Registration Status★ OPEN Registration Form 등록 신청서
  • Pre-algebra™
  • Course Code/Professor(Alma Mater)
  • STARPREP® COURSE CODE : PREAL-01

    ★ Pre-algebra™ GPA-Boosting Course ★
    학교 내신점수향상 대비반

    Next semester's advanced class
    prepares for a semester's worth of lessons in advance during the vacation period.
    All classes adjust the pace of the lessons according to the students' levels.
    As they are conducted on an individual progress basis, the total number of students per class is limited to six.
    You can take classes for as long as you are able to.
  • Features/Legacy
  • ★GPA BOOST & SIGNATURE LESSON★

    Pre-algebra™ 내신성적향상 수업

    ImproveMyGPA™
    Students' Satisfaction : above 99%

    Optimizing Concurrent Classrooms
    (In the Classroom And Online Simultaneously)
  • Pre-algebra™
  • Lecture Dates/Registration Status
  • June 17 - August 23, 2024
    Tue/Thurs
    2:00pm-5:00pm

    ★Registration Status★ OPEN Registration Form 등록 신청서
  • Pre-algebra™
  • Course Code/Professor(Alma Mater)
  • STARPREP® COURSE CODE : PREAL-02

    ★ Pre-algebra™ GPA-Boosting Course ★
    학교 내신점수향상 대비반

    Next semester's advanced class
    prepares for a semester's worth of lessons in advance during the vacation period.
    All classes adjust the pace of the lessons according to the students' levels.
    As they are conducted on an individual progress basis, the total number of students per class is limited to six.
    You can take classes for as long as you are able to.
  • Features/Legacy
  • ★GPA BOOST & SIGNATURE LESSON★

    Pre-algebra™ 내신성적향상 수업

    ImproveMyGPA™
    Students' Satisfaction : above 99%

    Optimizing Concurrent Classrooms
    (In the Classroom And Online Simultaneously)
  • Pre-algebra™
  • Lecture Dates/Registration Status
  • June 17 - August 23, 2024
    Monday-Friday
    2:00pm-5:00pm

    ★Registration Status★ OPEN Registration Form 등록 신청서
  • Pre-algebra™
  • Course Code/Professor(Alma Mater)
  • STARPREP® COURSE CODE : PREAL-03

    ★ Pre-algebra™ GPA-Boosting Course ★
    학교 내신점수향상 대비반

    Next semester's advanced class
    prepares for a semester's worth of lessons in advance during the vacation period.
    All classes adjust the pace of the lessons according to the students' levels.
    As they are conducted on an individual progress basis, the total number of students per class is limited to six.
    You can take classes for as long as you are able to.
  • Features/Legacy
  • ★GPA BOOST & SIGNATURE LESSON★

    Pre-algebra™ 내신성적향상 수업

    ImproveMyGPA™
    Students' Satisfaction : above 99%

    Optimizing Concurrent Classrooms
    (In the Classroom And Online Simultaneously)
  • Pre-algebra™
  • Lecture Dates/Registration Status
  • June 24 - August 2, 2024
    Mon/Wed/Fri
    2:00pm-5:00pm

    ★Registration Status★ OPEN Registration Form 등록 신청서
  • Pre-algebra™
  • Course Code/Professor(Alma Mater)
  • STARPREP® COURSE CODE : PREAL-04

    ★ Pre-algebra™ GPA-Boosting Course ★
    학교 내신점수향상 대비반

    Next semester's advanced class
    prepares for a semester's worth of lessons in advance during the vacation period.
    All classes adjust the pace of the lessons according to the students' levels.
    As they are conducted on an individual progress basis, the total number of students per class is limited to six.
    You can take classes for as long as you are able to.
  • Features/Legacy
  • ★GPA BOOST & SIGNATURE LESSON★

    Pre-algebra™ 내신성적향상 수업

    ImproveMyGPA™
    Students' Satisfaction : above 99%

    Optimizing Concurrent Classrooms
    (In the Classroom And Online Simultaneously)
  • Pre-algebra™
  • Course Code/Professor(Alma Mater)
  • STARPREP® COURSE CODE : PREAL-05

    ★ Pre-algebra™ GPA-Boosting Course ★

    학교 내신점수향상 대비반

    Next semester's advanced class
    prepares for a semester's worth of lessons in advance during the vacation period.
    All classes adjust the pace of the lessons according to the students' levels.
    As they are conducted on an individual progress basis, the total number of students per class is limited to six.
    You can take classes for as long as you are able to.
  • Features/Legacy
  • ★GPA BOOST & SIGNATURE LESSON★

    Pre-algebra™ 내신성적향상 수업

    ImproveMyGPA™
    Students' Satisfaction : above 99%

    Optimizing Concurrent Classrooms
    (In the Classroom And Online Simultaneously)
  • Pre-algebra™
  • Course Code/Professor(Alma Mater)
  • STARPREP® COURSE CODE : PREAL-06

    ★ Pre-algebra™ GPA-Boosting Course ★

    학교 내신점수향상 대비반

    Next semester's advanced class
    prepares for a semester's worth of lessons in advance during the vacation period.
    All classes adjust the pace of the lessons according to the students' levels.
    As they are conducted on an individual progress basis, the total number of students per class is limited to six.
    You can take classes for as long as you are able to.
  • Features/Legacy
  • ★GPA BOOST & SIGNATURE LESSON★

    Pre-algebra™ 내신성적향상 수업

    ImproveMyGPA™
    Students' Satisfaction : above 99%

    Optimizing Concurrent Classrooms
    (In the Classroom And Online Simultaneously)
  • Pre-algebra™
  • Course Code/Professor(Alma Mater)
  • STARPREP® COURSE CODE : PREAL-07

    ★ Pre-algebra™ GPA-Boosting Course ★

    학교 내신점수향상 대비반

    Next semester's advanced class
    prepares for a semester's worth of lessons in advance during the vacation period.
    All classes adjust the pace of the lessons according to the students' levels.
    As they are conducted on an individual progress basis, the total number of students per class is limited to six.
    You can take classes for as long as you are able to.
  • Features/Legacy
  • ★GPA BOOST & SIGNATURE LESSON★

    Pre-algebra™ 내신성적향상 수업

    ImproveMyGPA™
    Students' Satisfaction : above 99%

    Optimizing Concurrent Classrooms
    (In the Classroom And Online Simultaneously)
  • Pre-algebra™
  • Lecture Type/Registration Status
  • throughout the year
    1:1 Tutoring Online/In-person
    Schedule is flexible

    ★Registration Status★ OPEN Registration Form 등록 신청서
  • Pre-algebra™
  • Course Code/Professor(Alma Mater)
  • STARPREP® COURSE CODE : PREAL-08

    ★ Pre-algebra™ GPA-Boosting Course ★
    학교 내신점수향상 대비반

    Next semester's advanced class
    prepares for a semester's worth of lessons in advance during the vacation period.
    All classes adjust the pace of the lessons according to the students' levels.
    You can take classes for as long as you are able to.
  • Features/Legacy
  • ★GPA BOOST & SIGNATURE LESSON★

    Pre-algebra™ 내신성적향상 수업

    ImproveMyGPA™
    Students' Satisfaction : above 99%

    Optimizing Concurrent Classrooms
    (In the Classroom And Online Simultaneously)
  • Pre-algebra™
Lecture Dates/Registration Status Course Code/Specialty Features/Legacy
Lecture Date
June 17 - August 23, 2024
Mon/Wed/Fri
2:00pm-5:00pm

★Registration Status★ OPEN Registration Form 등록 신청서
STARPREP® COURSE CODE : PREAL-01

★Pre-algebra™ 내신성적향상 수업★
ImproveMyGPA™

Next semester's advanced class
prepares for a semester's worth of lessons in advance during the vacation period.
All classes adjust the pace of the lessons according to the students' levels.
As they are conducted on an individual progress basis, the total number of students per class is limited to six.
★GPA BOOST & SIGNATURE LESSON★

Pre-algebra™ 내신성적향상 수업

ImproveMyGPA™
Students' Satisfaction : above 99%

Optimizing Concurrent Classrooms
(In the Classroom And Online Simultaneously)
Pre-algebra™ Pre-algebra™
Lecture Date
June 17 - August 23, 2024
Tuesday&Thursday
2:00pm-5:00pm

★Registration Status★ OPEN Registration Form 등록 신청서
STARPREP® COURSE CODE : PREAL-02

★Pre-algebra™ 내신성적향상 수업★
ImproveMyGPA™

Next semester's advanced class
prepares for a semester's worth of lessons in advance during the vacation period.
All classes adjust the pace of the lessons according to the students' levels.
As they are conducted on an individual progress basis, the total number of students per class is limited to six.
★GPA BOOST & SIGNATURE LESSON★

Pre-algebra™ 내신성적향상 수업

ImproveMyGPA™
Students' Satisfaction : above 99%

Optimizing Concurrent Classrooms
(In the Classroom And Online Simultaneously)
Pre-algebra™ Pre-algebra™
Lecture Date
June 17 - August 23, 2024
Monday-Friday
2:00pm-5:00pm

★Registration Status★ OPEN Registration Form 등록 신청서
STARPREP® COURSE CODE : PREAL-03

★Pre-algebra™ 내신성적향상 수업★
ImproveMyGPA™

Next semester's advanced class
prepares for a semester's worth of lessons in advance during the vacation period.
All classes adjust the pace of the lessons according to the students' levels.
As they are conducted on an individual progress basis, the total number of students per class is limited to six.
★GPA BOOST & SIGNATURE LESSON★

Pre-algebra™ 내신성적향상 수업

ImproveMyGPA™
Students' Satisfaction : above 99%

Optimizing Concurrent Classrooms
(In the Classroom And Online Simultaneously)
Pre-algebra™ Pre-algebra™
Lecture Date
June 24 - August 2, 2024
Mon/Wed/Fri
2:00pm-5:00pm

★Registration Status★ OPEN Registration Form 등록 신청서
STARPREP® COURSE CODE : PREAL-04

★Pre-algebra™ 내신성적향상 수업★
ImproveMyGPA™

Next semester's advanced class
prepares for a semester's worth of lessons in advance during the vacation period.
All classes adjust the pace of the lessons according to the students' levels.
As they are conducted on an individual progress basis, the total number of students per class is limited to six.
★GPA BOOST & SIGNATURE LESSON★

Pre-algebra™ 내신성적향상 수업

ImproveMyGPA™
Students' Satisfaction : above 99%

Optimizing Concurrent Classrooms
(In the Classroom And Online Simultaneously)
Pre-algebra™ Pre-algebra™
Lecture Date
throughout the year
Every Friday
6:00pm-9:00pm

★Registration Status★ OPEN Registration Form 등록 신청서
STARPREP® COURSE CODE : PREAL-05

★Pre-algebra™ 내신성적향상 수업★
ImproveMyGPA™

Next semester's advanced class
prepares for a semester's worth of lessons in advance during the vacation period.
All classes adjust the pace of the lessons according to the students' levels.
As they are conducted on an individual progress basis, the total number of students per class is limited to six.
★GPA BOOST & SIGNATURE LESSON★

Pre-algebra™ 내신성적향상 수업

ImproveMyGPA™
Students' Satisfaction : above 99%

Optimizing Concurrent Classrooms
(In the Classroom And Online Simultaneously)
Pre-algebra™ Pre-algebra™
Lecture Date
throughout the year
Every Saturday
9:00am-12:00pm

★Registration Status★ OPEN Registration Form 등록 신청서
STARPREP® COURSE CODE : PREAL-06

★Pre-algebra™ 내신성적향상 수업★
ImproveMyGPA™

Next semester's advanced class
prepares for a semester's worth of lessons in advance during the vacation period.
All classes adjust the pace of the lessons according to the students' levels.
As they are conducted on an individual progress basis, the total number of students per class is limited to six.
★GPA BOOST & SIGNATURE LESSON★

Pre-algebra™ 내신성적향상 수업

ImproveMyGPA™
Students' Satisfaction : above 99%

Optimizing Concurrent Classrooms
(In the Classroom And Online Simultaneously)
Pre-algebra™ Pre-algebra™
Lecture Date
throughout the year
Every Saturday
1:00pm-4:00pm

★Registration Status★ OPEN Registration Form 등록 신청서
STARPREP® COURSE CODE : PREAL-07

★Pre-algebra™ 내신성적향상 수업★
ImproveMyGPA™

Next semester's advanced class
prepares for a semester's worth of lessons in advance during the vacation period.
All classes adjust the pace of the lessons according to the students' levels.
As they are conducted on an individual progress basis, the total number of students per class is limited to six.
★GPA BOOST & SIGNATURE LESSON★

Pre-algebra™ 내신성적향상 수업

ImproveMyGPA™
Students' Satisfaction : above 99%

Optimizing Concurrent Classrooms
(In the Classroom And Online Simultaneously)
Pre-algebra™ Pre-algebra™
Lecture Type
throughout the year
1:1 Tutoring Online/In-person
Schedule is flexible

★Registration Status★ OPEN Registration Form 등록 신청서
STARPREP® COURSE CODE :PREAL-08

★Pre-algebra™ 내신성적향상 수업★
ImproveMyGPA™

Next semester's advanced class
prepares for a semester's worth of lessons in advance during the vacation period.
All classes adjust the pace of the lessons according to the students' levels.
★GPA BOOST & SIGNATURE LESSON★

Pre-algebra™ 내신성적향상 수업

ImproveMyGPA™
Students' Satisfaction : above 99%

Optimizing Concurrent Classrooms
(In the Classroom And Online Simultaneously)
Pre-algebra™ Pre-algebra™
01 Factors and Multiple

1-1  Factors and multiples
1-2  Prime and composite numbers
1-3  Prime factorization
1-4  Note to Chapter 1
1-5  Checkup Exercise

02 Patterns

2-1  Math patterns
2-2  Writing expressions
2-3  Conditional Equations
2-4  Number patterns
2-5  Notes to Chapter 2
2-6  Checkup Exercise

03 Ratios and rates

3-1  Intro to ratios
3-2  Visualize ratios
3-3  Equivalent ratios
3-4  Ratio application
3-5  Intro to rates
3-6  Notes to Chapter 3
3-7  Checkup Exercise

04 Percentages

4-1  Intro to percents
4-2  Visualize percents
4-3  Equivalent representations of percent problems
4-4  Percent problems
4-5  Percent word problems
4-6  Note to Chapter 4
4-7  Checkup Exercise

05 Exponents intro and order of operations

5-1  Meaning of exponents
5-2  Powers of whole numbers
5-3  Powers of fractions and decimals
5-4  Order of operations introduction
5-5  More on order of operations
5-6  Note to Chapter 5
5-7  Checkup Exercise

06 Variables & expressions

6-1  Parts of algebraic expressions
6-2  Substitution & evaluating expressions
6-3  Evaluating expressions with multiple variables
6-4  Expression value intuition
6-5  Evaluating expressions word problems
6-6  Writing algebraic expressions introduction
6-7  Writing basic algebraic expressions word problems
6-8  Distributive property with variables
6-9  Combining like terms
6-10  Equivalent expressions
6-11  Worksheet: Expressions Involving Roots
6-12  Checkup Exercise

07 Equations & inequalities introduction

7-1  Algebraic equations basics
7-2  One-step equations intuition
7-3  One-step addition & subtraction equations
7-4  TOne-step multiplication and division equations
7-5  Finding mistakes in one-step equations
7-6  One-step equation word problems
7-7  Intro to inequalities with variables
7-8  Dependent and independent variables
7-9  Analyzing relationships between variables
7-10  Note to Chapter 7
7-11  Checkup Exercise

08 Percent & rational number word problems

8-1  Percent word problems
8-2  Rational number word problems
8-3  Notes to Chapter 8
8-4  Checkup Exercise

09 Proportional relationships

9-1  Rate problems with fractions
9-2  Constant of proportionality
9-3  Compare and interpret constants of proportionality
9-4  Identifying proportional relationships
9-5  Graphs of proportional relationships
9-6  Graphing Inequalities
9-7  Writing & solving proportions
9-8  Equations of proportional relationships
9-9  Notes to Chapter 9
9-10  Checkup Exercise

10 One-step and two-step equations & inequalities

10-1  Combining like terms
10-2  The distributive property & equivalent expressions
10-3  Interpreting linear expressions
10-4  Two-step equations intro
10-5  Two-step equations with decimals and fractions
10-6  Two-step equation word problems
10-7  One-step inequalities
10-8  Two-step inequalities
10-9  Note to Chapter 10
10-10  Checkup Exercise

11 Roots, exponents, & scientific notation

11-1  Square roots & cube roots
11-2  Exponent properties intro
11-3  Negative exponents
11-4  Exponent properties (integer exponents)
11-5  Working with powers of 10
11-6  Scientific notation intro
11-7  Arithmetic with numbers in scientific notations
11-8  Scientific notation word problems
11-9  Worksheet: Quadratic Equations
11-10  Checkup Exercise

12 Multi-step equations

12-1  Equations with variables on both sides
12-2  Equations with parentheses
12-3  Number of solutions to equations
12-4  Equations word problems
12-5  Notes to Chapter 12
12-6  Checkup Exercise

13 Two-variable equations

13-1  Graphing proportional relationships
13-2  Solutions to linear equations
13-3  Intercepts
13-4  Slope
13-5  Intro to slope-intercept form
13-6  Graphing slope-intercept form
13-7  Writing slope-intercept equations
13-8  Notes to Chapter 13
13-9  Checkup Exercise

14 Functions and linear models

14-1  Functions
14-2  Linear models
14-3  Comparing linear functions
14-4  Constructing linear models for real-world relationships
14-5  Logarithm Functions
14-6  Recognizing functions
14-7  Linear and nonlinear functions
14-8  Notes to Chapter 14
14-9  Checkup Exercise

15 Systems of equations

15-1  Intro to systems of equations
15-2  Systems of equations with graphing
15-3  Solving systems with substitution
15-4  Notes to Chapter 15
15-5  Checkup Exercise

01 Factors and Multiple

1-1  Factors and multiples
1-2  Prime and composite numbers
1-3  Prime factorization
1-4  Note to Chapter 1
1-5  Checkup Exercise

02 Patterns

2-1  Math patterns
2-2  Writing expressions
2-3  Conditional Equations
2-4  Number patterns
2-5  Notes to Chapter 2
2-6  Checkup Exercise

03 Ratios and rates

3-1  Intro to ratios
3-2  Visualize ratios
3-3  Equivalent ratios
3-4  Ratio application
3-5  Intro to rates
3-6  Notes to Chapter 3
3-7  Checkup Exercise

04 Percentages

4-1  Intro to percents
4-2  Visualize percents
4-3  Equivalent representations of percent problems
4-4  Percent problems
4-5  Percent word problems
4-6  Note to Chapter 4
4-7  Checkup Exercise

05 Exponents intro and order of operations

5-1  Meaning of exponents
5-2  Powers of whole numbers
5-3  Powers of fractions and decimals
5-4  Order of operations introduction
5-5  More on order of operations
5-6  Note to Chapter 5
5-7  Checkup Exercise

06 Variables & expressions

6-1  Parts of algebraic expressions
6-2  Substitution & evaluating expressions
6-3  Evaluating expressions with multiple variables
6-4  Expression value intuition
6-5  Evaluating expressions word problems
6-6  Writing algebraic expressions introduction
6-7  Writing basic algebraic expressions word problems
6-8  Distributive property with variables
6-9  Combining like terms
6-10  Equivalent expressions
6-11  Worksheet: Expressions Involving Roots
6-12  Checkup Exercise

07 Equations & inequalities introduction

7-1  Algebraic equations basics
7-2  One-step equations intuition
7-3  One-step addition & subtraction equations
7-4  TOne-step multiplication and division equations
7-5  Finding mistakes in one-step equations
7-6  One-step equation word problems
7-7  Intro to inequalities with variables
7-8  Dependent and independent variables
7-9  Analyzing relationships between variables
7-10  Note to Chapter 7
7-11  Checkup Exercise

08 Percent & rational number word problems

8-1  Percent word problems
8-2  Rational number word problems
8-3  Notes to Chapter 8
8-4  Checkup Exercise

09 Proportional relationships

9-1  Rate problems with fractions
9-2  Constant of proportionality
9-3  Compare and interpret constants of proportionality
9-4  Identifying proportional relationships
9-5  Graphs of proportional relationships
9-6  Graphing Inequalities
9-7  Writing & solving proportions
9-8  Equations of proportional relationships
9-9  Notes to Chapter 9
9-10  Checkup Exercise

10 One-step and two-step equations & inequalities

10-1  Combining like terms
10-2  The distributive property & equivalent expressions
10-3  Interpreting linear expressions
10-4  Two-step equations intro
10-5  Two-step equations with decimals and fractions
10-6  Two-step equation word problems
10-7  One-step inequalities
10-8  Two-step inequalities
10-9  Note to Chapter 10
10-10  Checkup Exercise

11 Roots, exponents, & scientific notation

11-1  Square roots & cube roots
11-2  Exponent properties intro
11-3  Negative exponents
11-4  Exponent properties (integer exponents)
11-5  Working with powers of 10
11-6  Scientific notation intro
11-7  Arithmetic with numbers in scientific notations
11-8  Scientific notation word problems
11-9  Worksheet: Quadratic Equations
11-10  Checkup Exercise

12 Multi-step equations

12-1  Equations with variables on both sides
12-2  Equations with parentheses
12-3  Number of solutions to equations
12-4  Equations word problems
12-5  Notes to Chapter 12
12-6  Checkup Exercise

13 Two-variable equations

13-1  Graphing proportional relationships
13-2  Solutions to linear equations
13-3  Intercepts
13-4  Slope
13-5  Intro to slope-intercept form
13-6  Graphing slope-intercept form
13-7  Writing slope-intercept equations
13-8  Notes to Chapter 13
13-9  Checkup Exercise

14 Functions and linear models

14-1  Functions
14-2  Linear models
14-3  Comparing linear functions
14-4  Constructing linear models for real-world relationships
14-5  Logarithm Functions
14-6  Recognizing functions
14-7  Linear and nonlinear functions
14-8  Notes to Chapter 14
14-9  Checkup Exercise

15 Systems of equations

15-1  Intro to systems of equations
15-2  Systems of equations with graphing
15-3  Solving systems with substitution
15-4  Notes to Chapter 15
15-5  Checkup Exercise


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Reference Lectures

Pre-Algebra™

Pre-Algebra™ 1 - The Dawn of Numbers Pre-Algebra™ 2 - Roman Numerals: Sign-Value vs Positional Notation
Pre-Algebra™ 3 - Decimal, Binary, Octal & Hexadecimal Pre-Algebra™ 4 - Whole Numbers, Integers, and the Number Line
Pre-Algebra™ 5 - Commutative & Associative Properties of Addition Pre-Algebra™ 6 - Commutative Property of Multiplication
Pre-Algebra™ 7 - Associative & Distributive Properties of Multiplication Pre-Algebra™ 8 - Multiplying Negative Numbers