Welcome to Mr. Competello’s 8th Grade Math class page!

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# 8th Grade Math

Home > Classrooms > 8th Grade Math
### January 2020

Posted on January 5, 2020
### SLOPE AND PROPORTIONAL RELATIONSHIPS

Posted on November 17, 2019
Posted on October 14, 2019
### Welcome to 8th Grade Math

Posted on September 4, 2019
Read all posts in 8th Grade Math ›

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‘Arguably the largest highly successful Catholic elementary school in NYC’ – Former Pastor

Welcome to Mr. Competello’s 8th Grade Math class page!

New Lesson – Week of January 6, 2020

__SUBSTITUTION AS WAY OF SOLVING SYSTEMS OF EQUATIONS__

- Complete
__Foundations In Algebra__book- page 196, # 1 to 16. These problems should be completed and were handed in for a test grade. These problems will be used for testing. __Progress In Math__book- pages 120 & 121 – read and be sure you understand the process required to solve systems of equations using substitution.- Complete the handout that will be given in solving systems of equations by substitution.

New Lesson – Week of January 6, 2020

__SOLVING SYSTEMS OF EQUATIONS USING THE ELIMINATION METHOD__

__Foundations in Math __ – p.196, # 17 to 34

__Progress In Math__ p. 124 to 127

Write several paragraphs describing the 3 ways to solve systems of linear equations.

__INTRODUCTION TO FUNCTIONS __

Use the Youtube presentations to note the important words that you need to ‘get the idea’

Be sure to fill in every example and do all the coached assignments.

What are the main characteristics of functions?

BE SURE TO NOTE THE SOLUTIONS AND WHAT STRATEGIES WERE APPLIED.

Write a paragraph describing what is needed for an equation to be a function.

What is meant by the vertical line test?

FOUNDATIONS IN ALGEBRA

KEY CONCEPTS TO REMEMBER

CHAPTER 6 PP175 /176 COMPLETE 1 TO 6. BE SURE TO DO THIS ON GRAPH PAPER FOR A HOMEWORK GRADE.

ALSO…….NUMBERS 7 to 16 (hint – use a mapping diagram to answer these questions).

On page 176….apply the vertical line test to answer questions 17 to 22.

Apply what you have learned to this point to answer numbers 23 and 24. IT IS NECESSARY TO WRITE WHAT YOUR RATIONALE IS IN ANSWERNG THESE PROBLEMS.

SOURCEBOOK SECTION 6/2 WRITING A FUNCTION RULE – COMPLETE THE “TRY THESE”, 1 TO 4

NOW… IN THE WORKBOOK COMPLETE ALL OF PAGES 177 AND 178.

SHORT QUIZ GIVEN AT THIS POINT.

Note well what content you are responsible for.

Be sure to complete:

— Coach pages as assigned

— Progress book pp 137 to 140 – this is lesson 13

—Progress book lesson 14 pages 149 to 153

AT THIS POINT THERE WILL BE REVIEW OF ALL WORK AND TEST DATE TO BE ANNOUNCED DEPENDING ON HOW QUICKLY WE COVER THIS INFORMATION.

** Early February:** AT THIS POINT WE WILL HAVE AN INTENSIVE REVIEW OF CONSUMER MATH

Looking at chapter 8 in the “old progress text 8”we will discuss all the content in consumer math.

After extended discussion of the content you are responsible for pages 230 and 231. These 27 problems cover all the computations. You should now be able to do the word problems.

All the problems will be done in our math groups. It is your responsibility to do the class work on loose leaf paper to be handed in with computation and explanations.

This will count for a major test grade.

Due date to be determined.

PROGRESS MONITOR QUESTIONS AS OUTLINED IN CLASS.

THESE ARE PROBLEMS COVERING ALL THE MAJOR MATH CONCEPTS YOU SHOULD KNOW.

Again, these answers must be explained.

Simply choosing a letter choice is not acceptable. You must support your choice with an explanation and/or a computation.

**SLOPE AND PROPORTIONAL RELATIONSHIPS**

Posted on November 17, 2019

Using the handout given in class explain what is meant by the relationship between the slope of a line and a proportional relationship. Review at home the YouTube presentations from Khan Academy on __Introduction to Slope__ and __ How to Find the__ __Slope of a Line.__

In Class – SOURCEBOOK pages 162 & 163…Do page 163 # 1 to 12.

Ongoing Assignment – __Foundations In Algebra Workbook __– pages 181 & 182 #1 to 30. Be sure to use the slope formula and also explain the problem -solving questions # 29 & 30.

In Class -SOURCEBOOK – pages 164 & 165 – Complete “Try These” on p. 165 # 1 to 8

__Foundations in Algebra Workbook__ p. 183 & 184..complete # 1 to 20

In class – __SOURCEBOOK __p. 166 & 167 – writing equations in slope-intercept form y=mx +b

__Foundations in Algebra Workbook – __p. 185 & 186 # 1 to 23. Be sure to use graph paper when directed. Be sure to graph the equations in slope-intercept form.

__Progress in Math Workbook __ – p. 96 to 111. Read for review. Be sure to complete the guided instruction and work through the guided practice and independent practices. Various problems will be highlighted for importance.

Lesson 12 on p. 92 – Do “Discuss” section and “Apply” section on p. 93 and complete p.94 to 99.

__GO MATH __ (Reference book to be used in class) – p. 83 to 87. Complete in your notebook.

__Common Core Coach 8__ – Read p. 40 to 43. Complete p. 44 & 45. Read p 46 & 47, then do p. 49 to 51.

The above assignments from __GO MATH__ and __Common Core Coach 8 __ will be done and reviewed in class.

The work from __Progress in Math Workbook, Foundations in Algebra Workbook, __and__ Practice Coach Plus__ will be completed in class and/or assigned for homework as we progress.

Complete assigned __Coach Book __pages.

**EXPRESSIONS AND EQUATIONS IN ALGEBRA**

Posted on October 14, 2019

*PARENTS- PLEASE NOTE – GRADED TESTS FROM LAST WEEK WILL BE GIVEN BACK THIS WEEK.

Simplifying and evaluating algebraic expressions–

Be sure to review the teaching display on page 73 in __Foundations__ following the initial presentation.

Ongoing assignment: Be sure to complete all ongoing assignments as the topics are presented in class. Assignments will be checked periodically and applied to your grade.

- Complete pp 73 & 74 — # 7 through 31. You have the option of the challenge question on p. 74 for additional credit.
- One-step addition and subtraction equations – Remember the subtraction property of equality and the addition property of equality. Be sure to note the various problems on pp 77 & 78 which incorporate fractions, decimals and integers. Do problems #5 -35 on pp 77 & 78 in
- One-step multiplication and division equations – Be sure you understand from the initial presentation, the division and multiplication properties of equality as explained on p. 79 in Remember multiplication and division are inverse operations as well as addition and subtraction. Complete pp 79 & 80 noting the use of fractions, decimals and integers.
- Two-step equations – pp 81 & 82 in
__Foundations –__Use #4 on p. 82 as a model problem. - THE SOURCE BOOK – pp. 76 & 77 – Be sure to understand all modeled problems after initial presentation is made. Complete # 1-5 from THE SOURCE BOOK p77, and in Foundations pp. 83 & 84.
- Multi-step equations with grouping symbols – THE SOURCE BOOK – pp 78 & 79 – Be sure to understand and be able to explain all the modeled problems. Complete p. 79 – # 1-9 and in Foundations Book -pp 85 & 86.
- Multi-step equations with variables on both sides – THE SOURCE BOOK – pp 80 & 81 – Be able to explain these examples after the initial presentation. Do p 81, #1-4 and in Foundations book pp 87 & 88.
- Coach Book – page 68 through 83 must be completed as a conclusion to this topic.
- TEST PREP QUESTIONS WILL BE PROVIDED FROM ADDITIONAL SOURCES TO BE USED AS A REVIEW AND REINFORCEMENT PRIOR TO THE SUMMATIVE TEST.

WEEK OF SEPTEMBER 23, 2019

Parents: Please note- tests were sent home this week. You should ask your child about his/her first Math test of the year.

September 24, 2019 – New Topic SCIENTIFIC NOTATION

Remember the following are “ongoing assignments”:

(Refer to the meaning of “ongoing assignments” in the previous posts.)

After completing these assignments and study guides, you should be prepared to be tested on the next topic – “Scientific Notation”. Formative assessments are small assessments to see how much of the material covered you have mastered and to address any weak areas up to this point. These will be given intermittently. Summative assessment (test on the entire topic) will be given after topic is complete.

Refer to the Youtube presentation given in class “Introduction to Scientific Notation”. Note well what has been highlighted from that presentation.

- During class – initial presentation from Sourcebook pages 36 & 37
- Do “Try These” – p.36-37
- Ongoing assignment –

1.Writing numbers in scientific notation, writing numbers in standard form from scientific notation- Complete p.39 & 40, # 1-39 in Foundations Book

- Ordering in scientific notation – p.39 (Review), p.40 #40-55 in Foundations book
- Problem solving basics in scientific notation – p.40 # 56-57 solve and check to verify your answer

FORMATIVE ASSESSMENT?????

- STUDY p 80 & 81 in Progress Book- Describe how to multiply numbers in scientific notation; complete p. 41 in Foundations Book;
- Progress Book: Guided Instruction p.82 & 83-describe how to divide in scientific notation
- Do page 42 in Foundations

SOLVING WORD PROBLEMS USING SCIENTIFIC NOTATION

- The following word problems should be completed and answered as directed: Foundations Book page 40- #56 & 57; Page 42 – # 37 through 40; Progress Book page 86 – # 7,8,11;
- Coach Book Review work – pages to be announced…you will be able to solve and explain.

For the summative test, you should be able to

- write numbers in scientific notation from standard form
- write number in standard form from scientific notation
- order and compare numbers in scientific notation
- multiply and divide numbers in scientific notation
- add and subtract numbers in scientific notation
- solve word problems using scientific notation in computation and answers

**Due SEPTEMBER 6, 2019:**

- Summer assignment as the first graded homework. NO EXCEPTIONS! LATE HOMEWORK WILL NOT BE ACCEPTED SINCE THIS ASSIGNMENT WAS GIVEN IN JUNE.

**Due SEPTEMBER 13, 2019** –

- Review pages and computation review pages will handed in. Be sure to follow the directions given on the first day of school. This assignment must include rationales, computations and mathematical concepts that relate to the questions. The information for this assignment can be found in your notes as the class progresses the first week. REMEMBER: THIS IS A GRADED ALTERNATIVE ASSESSMENT.

**ONGOING ASSIGNMENTS ON TOPIC #1 –**

** Laws of Exponents/Operations with Exponents/Powers and Exponents:**

Foundations in Algebra Book – pp 24 to 26

Progress in Math Book – read pp 32 to 34; do pp 35 to 37

read pp 40 to 42; do pp 43 to 45

read pp 48 to 50; do pp 51 #1 and 2; do p 53 # 4,5,6

****”Ongoing assignments ” – This means topics that will be taught and explained in class through differentiated instruction. Your responsibility is to complete these pages as specified by Mr. Competello as the class progresses. This will be the nature of the way homework is assigned the entire year.

At least 2-3 days’ notice will be given before tests.

In addition to the work in the Progress and Foundation Books, reinforcement will be assigned from the Coach Book, and at times from worksheets. Using all of this information will prepare you for tests. Please remember that * $10 is due *to cover the cost of the additional Coach Book. Remember that you are free to use all of this information as the class progresses to prepare for tests. Looking forward to a productive and enjoyable year….Mr. C