Format of Guidelines

 

STRAND

 

 

SCOPE

and

SEQUENCE

 

SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXAMPLE

 

PROBLEM SOLVING EXAMPLE

 

 

CONNECTIONS INTEGRATION

 

RESOURCES

 

 

TOPIC

 

 

 

 

 

 

 

 

 

 

description of the extent to which a skill is developed, or of what behaviors the students will exhibit in completing the activities used to develop the skill.

 

vocabulary with which the students should be able to communicate (speak, write) mathematically.

 

computational or conceptual representation of skill indicating the extent to which the skill is to be presented at this level.

 

application of skill to problem-solving/real-life situation

 

inter-relatedness of skill to real-life or applications of skill to other areas of the curriculum or to other skills in mathematics

 

This space is intended to be utilized by the teacher to list the references and materials appropriate to the development of the skill:

     e.g. teacher guide, technology, supplementary materials, manipulatives, etc.

 

 

STRAND refers to the general area of mathematics into which each topic is categorized.

Strands include READINESS, SKILLS, NUMBER CONCEPTS, OPERATIONS, PROBLEM SOLVING, MENTAL

MATHEMATICS, ESTIMATION, GEOMETRY, MEASUREMENT, REASONING SKILLS, DATA AND

STATISTICS, TECHNOLOGY, RATIO-PROPORTION-PERCENT, AND PRE-ALGEBRA SKILLS.

 

A section of these guidelines is also designated as ENRICHMENT.  This is intended for the horizontal expansion of topics

 rather than the vertical progression of skills.

 

TOPIC –  specific area within each strand.   (For example, USING A PROBLEM-SOLVING MODEL is a topic in the strand of PROBLEM SOLVING).                                     

                                                                                                                       

 

 

NUMBER CONCEPTS – GRADE 7

 

 

SCOPE

and

SEQUENCE

 

SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXAMPLE

 

 

PROBLEM SOLVING EXAMPLE

 

 

CONNECTIONS INTEGRATION

 

RESOURCES

 

I - D

 

INTEGERS

 

M7.1

The students will understand the concept of integers.

 

 

 

 

 

M7.2

The students will compare and order integers.

 

integer

positive

negative

 

whole number

 

 

 

  + 13

 

   -7

 

 

 

 

 

+ 16 > - 32

 

- 23 < + 4

 

 

 

 

 

 

Give the integer which represents the following:

 

22 degrees below zero

 

a deposit of $5.00.

 

 

At the end of a card game, Tom’s score was +8;

Ellen’s score was –23.

Who had the higher score?

 

 

 

 

 

 

 

 

 

 

 

 

Real life:

Temperatures, game scores, feet above or below sea level, gains and losses in the stock market, etc.

 

 

                                                                                               

 

 

 

 

 

 

NUMBER CONCEPTS – GRADE 7

 

 

SCOPE

and

SEQUENCE

 

SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXAMPLE

 

PROBLEM SOLVING EXAMPLE

 

 

CONNECTIONS INTEGRATION

 

RESOURCES

 

M

 

PLACE VALUE

 

M7.3

The students will maintain understanding of place value millionths through billions

 

decimal millionths hundred-thousandths

ten-thousandths thousandths hundredths

tenths

units

tens

hundreds

thousands

ten-thousands

hundred-thousands

millions

ten-millions

hundred-millions

billions

 

Use place Value Chart.

 

Draw a place value chart for thirty eight and four hundred twelve hundred-thousandths

 

 

 

 

In a reference book (e.g. an almanac) search for things that are described in terms of very large and very small numbers.

 

Study Skills –

use of reference materials.

 

Language Arts – Writing large numbers within a paragraph/sentence

 

Social Studies, Science – larger and smaller numbers used in data.

 

Physical Education – number used to record speed and distances

 

Technology – limitations of calculator display.

 

 

 

 

NUMBER CONCEPTS – GRADE 7

 

 

SCOPE

and

SEQUENCE

 

SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXAMPLE

 

PROBLEM SOLVING EXAMPLE

 

 

CONNECTIONS INTEGRATION

 

RESOURCES

 

M

 

READING AND WRITING NUMBERS (NUMERALS)

 

M7.4

The students will maintain skills in reading and writing numbers.

 

number

numeral

 

 

Reading:

       Stress:

decimal point is read as “and”.

 

       Stress:

Correct reading of repeating decimals (e.g.

           _

    0.6 3

is

read as “63 hundredths, bar 3.”

 

Writing:

       Stress:

correct formation of numerals and mathematical symbols; correct size of fractions and exponents.

 

 

Write in words:

4,003,016,024

(four billion,

 three million, sixteen thousand, twenty-four.)

 

Write the inequality for the statement:

     Eight million is greater than eight millionths.

(8,000,000 > 0.000008)

 

Language Arts –

Handwriting;

Reading;

Vocabulary enrichment (number-related root words) Spelling

 

Correct writing of numbers in sentences, outlines, tables, etc.

 

Social Studies –

reading and writing numerical data.

 

Science –

reading and writing numerical data.

 

Technology –

interpreting spreadsheet data.

 

 

 

 

NUMBER CONCEPTS – GRADE 7

 

 

SCOPE

and

SEQUENCE

 

SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXAMPLE

 

PROBLEM SOLVING EXAMPLE

 

 

CONNECTIONS INTEGRATION

 

RESOURCES

 

I - D

 

NUMBER PATTERNS

 

M7.5

The students will discover number patterns; they will see the relationship between triangular and square numbers; they will discover patterns in Pascal’s triangle.

 

patterns

triangular numbers

 

figurate numbers

 

 

square numbers

 

Pascal’s Triangle

 

 

 

Explore dot patterns to find square numbers and their relation to triangular numbers.

 

    ▪▪    ▪▪▪     ▪▪▪▪

      ▪▪    ▪▪▪     ▪▪▪▪

             ▪▪▪     ▪▪▪▪

                      ▪▪▪▪

  

 

  Problem Solving:

  Solving a Simpler

  Problem:

 

  How many squares

  are on a

  checkerboard?

 

  Start with a 2 x 2

  square and

  develop the

  pattern to solve.

 

 

M

NUMBER

SENSE

 

PLACE

VALUE

M7.6

The students will maintain

understanding of place value millionths through trillions.

decimal

millionths

hundred-thousandths

ten-thousandths

thousandths

hundredths

tenth

units

tens

hundreds

thousands

ten-thousands

millions

ten-millions

hundred-millions

billions

trillions

Use place value chart

Draw a place value chart

ffor thirty eight and four

hundred twelve millionths.

 

In a reference book

(e.g. an almanac) search

for things that are

described in terms of very

large and very small

numbers.

Study Skills—use of reference materials

 

Language Arts—Writing large numbers within a paragraph/sentence.

 

 Social Studies, Science—

larger  and smaller numbers used in data.

 

 Physical Education—

 number used to record speed and distances

 

Technology—limitations of calculator  display.

 

SCOPE

and

SEQUENCE

 

SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXAMPLE

 

CONNECTIONS INTEGRATION

 

RESOURCES

 

M

 

 

 

 

 

I - D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M

 

 

 

 

 

M

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M

 

 

 

 

 

 

 

 

 

 

 

 

 

I-D-M

 

 

 

 

 

 

 

 

 

 

NUMBER PATTERNS

 

Divisibility

 

 

 

 

Perfect,

Abundant,

Deficient numbers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Prime and Composite Numbers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sequences

 

 

 

 

 

 

 

 

M7.7

The students will determine if a number is divisible by 2, 3, 4, 5, 6, 8, 9, or 10.

 

 

M7.8

The students will determine if numbers are perfect, abundant or deficient.

 

 

 

 

 

 

 

 

 

 

 

 

M7.9

The students will determine if numbers are prime of composite. 

 

M7.10

Using the Sieve of Erastothenes, the students will determine the prime numbers between 1 and 100.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M7.11

The students will find the prime factorization of composite numbers.

 

 

 

 

 

 

 

 

 

 

M7.12

The students will recognize and extend arithmetic and geometric sequences and will solve problems using these.

 

divisibility

divisible

factor

 

 

 

 

 

perfect numbers

abundant numbers

deficient numbers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

prime number

composite number

 

 

 

 

Sieve of

Erastothenes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

factor tree

prime factorization

Fundamental

  Theorem of

    Arithmetic

 

relatively prime

 

twin primes

 

 

 

 

 

 

sequence

terms

arithmetic  

    sequence

geometric

   sequence

common

   difference

common

   ratio

 

 

 

 

 

 

 

 

 

 

 

 

 

 

48 is divisible by 2, 3, 4,

6, 8, 12, 16, 24 and 48

 

Perfect  --a number is

perfect if the sum of the

factors less than the

number is equal to the

number

( The factors of 28 are 1,

2, 4, 7, and 14.  The sum

of these factors is 28).

Abundant – a number is

abundant if the sum of

the factors less than the

number is greater

than the number.(12 is an

abundant number).

Deficient – sum of factors is less than the number (10 is a deficient number).

 

Prime – a number

having only 2 factors,

itself and 1.

Composite – a number

with more than two factors.

 

Sieve of Erasiothenes –

Using a hundreds’ chart,

cross out all multiples

 

 

 

 

 

of

2, 3, 5, 7..Remaining

numbers are prime numbers.

 

 

factor tree –

240

                 /     \

               60x    4

                /\       /\

           15x 4x 2 x 2

            /\     /\   |     |

 

/\     /\   |     |

           5x3x2x2x2x2

The prime factorization of 240 is

 2⁴ ·3·5

 

 

 

arithmetic sequence- next term found by adding .

(e.g.  3, 7, 11, 15, 19,..next terms found by adding 4 to last term.)

 

Geometric Sequence – next term found through multiplication . (e.g. 4, 8, 16, 32, 64, 128…next term found by multiplying previous term by two.)

 

Sequences found through using a combination of operations are neither arithmetic or geometric. (e.g. 4, 8, 9, 18, 19, 38, 39…the pattern is x2 + 1)

 

 

 

How many different

ways can 4 dozen donuts be arranged on a tray?

2 rows of 24

3 rows of 16

4 rows of 12

6 rows of 8…

 

Make a chart identifying the numbers from 25 – 40 as being deficient, abundant or perfect.

Explain why 33 is considered a deficient number

 

 

 

 

 

How many consecutive primes are there between 1 and 58

 

(Since 2 is the only even prime, there is only one set of consecutive primes).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bill’s father gave him a choice of payment plans for doing odd jobs at the family store during the month of July.

Plan A:  Starting with $4.81 on the first day of the month, he could double the amount each day.

Plan B:  $10. a day for each day he worked.

 

If Bill worked 20 days out of the month which plan would Bill find most beneficial?

(Under plan A, Bill would earn $10,485.75.  Under plan B, he would earn only $200.00)

 

Extend – How many days does Bill have to work in order for plan B to be more beneficial? (14)

 

How much would Bill earn under each plan if he worked for 12 days?  15 Days?  25 days?

 

 

Science: patterns in nature

 

Social Studies:  election years

 

Real Life:  Patterns in architecture, industry, sports

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Math: Geometry- Using blocks or cubes, have the students discover that prime numbers can only make one rectangular arrangement.  With composite numbers, multiple arrangements are possible. (e.g. with 24 cubes the arrangement could be 2 x 12, 3 x 8, 6 x 4, etc.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Math:  Problem solving—Make a Table Strategy

 

Science:  Patterns

 

Language Arts:  Prepare an oral presentation explaining the different types of sequences.

 

Prepare a job interview simulating the problem situation.

 

Technology:  Use the calculator/computer in working on sequences.

 

Research:  Leonardo Fibbonacci

 

Science, Music:  Applications of the Fibbonacci sequence.

 

Art, Architecture:  Applications of the Golden Rectangle

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NUMBER CONCEPTS – GRADE 7

 

SCOPE

and

SEQUENCE

 

SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXAMPLE

 

PROBLEM SOLVING EXAMPLE

 

 

CONNECTIONS INTEGRATION

 

RESOURCES

 

I – D –M

 

READING AND WRITING MATHEMATICAL SYMBOLS

 

M7.13

The students will read and write mathematical symbols

Symbol

+, -, x, ÷, =, <, >, ≤,  ≥, ≠, ≈, ~, —, …,  º, %, @, ½-3½, p,

 

 

Provide practice using symbols in context.

 

Mary’s favorite foods included pizza, hamburgers, fries, and ice cream.

 

{pizza, hamburgers, fries, ice cream}

 

 

M

 

COMPARING AND ORDERING DECIMALS

 

M7.14

Given real-life situations,  the students will compare decimals

 

greater than

less than

equal

equivalent

 

1. Compare on number line:

number to the right is always the greater number.

 

2. Use place-value chart to compare numbers.

 

3. Using graph paper, create models of decimals to compare.

 

Items to compare:

-          sports’

            statistics

-          gas mileage

-          barometric pressure

-          nutritional value of food

-          interest rates

 

Science:   data for biology.

Social Studies:   distances on maps.

Study Skills:   Reading charts, tables, etc.

 

 

M

 

ORDERING NUMBERS FROM GREATEST TO LEAST AND VICE VERSA.

 

M7.15

Given a set of data, the students will order the data from least to greatest or from greatest to least.

 

greatest

least

 

Order the following:

from least to greatest:

 

5, 0.5, 0.55, 0.505, 50

 

(0.5, 0.505, 0.55, 5, 50)

 

Order the following from greatest to least.

  166, 16.6, 1.66 1.6666

(166. 16.6, 1.6666,  1.66)

 

Compare the percentages of a basketball league.

 

 

Find statistics represented in the sports section of the newspaper—

compare the percentages represented as decimals.

 

Language Arts:  Write a step-by-step plan for comparing decimals.

 

Technology:  Utilize software programs which compare decimals.

 

Mathematics, Social Studies, Science: Compare data using bar and line graphs.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NUMBER CONCEPTS – GRADE 7

 

SCOPE

and

SEQUENCE

 

SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXAMPLE

 

PROBLEM SOLVING EXAMPLE

 

 

CONNECTIONS INTEGRATION

 

RESOURCES

 

 

NUMBER LINE

 

The students will use the number line as an aid in developing number sense.

 

Social Studies:  Time lines

 

 

M

 

ROUNDING DECIMALS AND WHOLE NUMBERS

 

M7.16

The students will round whole numbers and decimals to any place-value position.

 

rounding

 

Teacher Alert:  Be careful when working with estimation to distinguish between rounding the numbers to be estimated before completing the operation and merely rounding the answer to the operation.

 

Round

53,769,211 to the nearest thousand.

 

(The digit nine is in thousands place.  The number immediately to the right is 2  which is less than 5, so 53,769, 211 rounded to the nearest thousand is

53, 769,000.

 

Round 4.0695 to the nearest hundredth: The digit 6 is in hundredths place.  The digit to the right is a nine. (4.0695 rounded to the nearest hundredth is 4.07.)

 

Locate the heights of the world’s mountains an atlas or almanac.  Round these numbers to the nearest thousand.  Order these from greatest to least.  Make a graph showing their relationships.

 

Mathematics:  measurement, estimating:

 

 

Real life skills: rounding money to the nearest dollar.

 

 

 

NUMBER CONCEPTS – GRADE 7

 

 

SCOPE

and

SEQUENCE

 

SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXAMPLE

 

PROBLEM SOLVING EXAMPLE

 

 

CONNECTIONS INTEGRATION

 

RESOURCES

 

D – M

 

POWERS AND EXPONENTS

 

M7.17

The students will use powers and exponents in expressions

 

factors

exponent

base

powers

cubed

squared

 

         Exponent

                       

100,000 = 10

               

             base

Write as a product.

(2³ = 2·2·2)

      Note use of raised dot as a symbol for multiplication

 

The height of a building can be expressed as

 

Approximately how many floors can the building have if each floor occupies about 14 feet?

 

Testing Practice: Which of the following statements is correct?

 

A.      3² = 2³

B.       4² = 2⁴

(B is correct.

A.      9  >  8

B.       16 = 16)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NUMBER CONCEPTS – GRADE 7

 

SCOPE

and

SEQUENCE

 

SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXAMPLE

 

PROBLEM SOLVING EXAMPLE

 

 

CONNECTIONS INTEGRATION

 

RESOURCES

 

D – M

 

 

 

 

 

 

 

 

I – D

 

EXPONENTIAL NOTATION

 

 

 

 

 

 

 

SCIENTIFIC NOTATION

 

M7.18

The students will express numbers in exponential form.

 

 

 

 

 

M7.19

The students will use scientific notation to represent large numbers.

 

Exponential form

 

 

 

 

 

 

 

 

 

scientific notation

 

 

28 x 10³ =

28 x  1000 =

28,000

 

 

 

 

A number written in scientific notation has 2 factors:

-a number

≥1 but < 10

-          a power of ten

 

2.8 x 10³ =

2.8 x 1000 =

2,800

 

The land area of South America is 6,875,000 square miles.  Represent this number using exponential notation.

(6.875 x 10³)

 

 

The largest river in the world is the Amazon with a total basin area of 2,720,000 square miles. Represent this number in scientific notation.

 

(2.72 x 10⁶)

 

Science,

Social Studies: larger and smaller numbers.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ESTIMATING

 

The concept of estimation should be applied to all strands within the curriculum.  For specific applications of estimation, please refer to the estimation strand within these guidelines.

 

 

 

NUMBER CONCEPTS – GRADE 7

 

SCOPE

and

SEQUENCE

 

SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXAMPLE

 

PROBLEM SOLVING EXAMPLE

 

 

CONNECTIONS INTEGRATION

 

RESOURCES

 

D

 

RATIOS

 

M7.20

The students will identify ratios and will write equivalent ratios.

 

ratio

 

rate

 

unit rate (second term of ratio is one)

 

The names of twelve of the fifty states  begin with a vowel.

Express this as a ratio in three different ways:

 

12 to 50

 

12:  50

 

12   or 6

50      25

 

8 of the boys in the class wore green for St. Patrick’s Day.  Five of the girls wore green.  Write the ratio for a class of twenty five students.

 

Mathematics:

Fractions,

Problem Solving

Geometry

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D

 

PROPORTION

 

M7.21

The students will identify proportions.

 

proportion

 

extremes/means

 

cross products

 

equivalent ratios

 

Model using fraction bars, fraction circles, or other manipulatives.

 

░ ▒     

 

░ ▒ ▒ ▒

 

░ ▒ ▒ ▒

 

    ░ ░

 

   

      3 = 2

             9    6

 

 

Mathematics:

equivalent

fractions

 

 

NUMBER CONCEPTS – GRADE 7

 

SCOPE

and

SEQUENCE

 

SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXAMPLE

 

PROBLEM SOLVING EXAMPLE

 

 

CONNECTIONS INTEGRATION

 

RESOURCES

 

 

 

PERCENTAGE

 

Review all concepts of percentage as introduced and developed at level 6.  Further development and application is indicated in the Ratio, Proportion and Percentage section of these guidelines.  Students should commit to memory the most common decimal-fraction-rate of percentage equivalents.

 

I

 

BASES OTHER

THAN TEN

 

M7.22

The students will become aware of number bases other than base ten.

 

base 

 

base ten

 

decimal system

 

base two

 

binary system

 

Review Base  10:

 

136 means:

 

1 x 10² +

3 x 10¹ +

6 x 10º   -

 

100 + 30 + 6

Note: the only digits in a number base are the digits less than the base itself.

1 0 1two =

 

1 x 2² +

0 x 2¹ +

1 x 2º =

 

4 + 0 + 1 = 5

 

 

Express 21 as a binary number:

 

(1 x 2⁴) +

(0 x 2³) +

(1 x 2²) +

(0 x 2¹) =

(1 x 2º) =

 

16+0+4+0+1

 

Therefore:

10101two = 21ten

 

 

Technology:

The use of the binary number system in computer programming.

 

 

Enrichment:

Challenge students to compare numbers in different number bases.

 

36tens---101two

 

Challenge students to use bases other  than base two and base ten.

 

 

Enrichment for above average students.

 

ROMAN NUMERALS

 

Review the concept and application of Roman Numerals as presented at earlier levels.

Reminder:  Do not draw lines connecting Numerals at top and bottom.

 

 

 

 

OTHER SETS OF NUMBERS

 

 

SCOPE

and

SEQUENCE

 

SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXAMPLE

 

PROBLEM SOLVING EXAMPLE

 

 

CONNECTIONS INTEGRATION

 

RESOURCES

 

I - D

 

NATURAL NUMBERS

 

M7.23

The students will identify the natural numbers as counting numbers included in the set of numbers beginning with one and extending into infinity.

 

natural number

 

counting number

 

set of numbers

 

infinity

 

whole number

 

 

 

N = {1,2,3…}

 

3 is a natural number

 

4.5 is not a natural number

 

0 is not a natural number

 

Make a table identifying the following numbers as natural, whole, integers or rational numbers:

 

36

-3

2.5

3 ½

 

Mathematics:

Problem Solving, Reasoning Skil

 

I – D

 

INTEGERS

 

M7.24

The students will understand integers as the extension of natural numbers to include zero and negative numbers.

 

integer

 

positive

 

negative

 

J=(…-3, -2, -1, 0, 1, 2, 3…)

 

-43 is an integer

 

-43.5 is not an integer

 

the symbol J to represent the set of integers

(I is reserved for Irrational numbers—not presented at this level.)

       

 

                        Q                    THE USE OF A GRAPHIC                                                  

                        J                     TO REPRESENT THE SETS

                      W                     OF NUMBERS WILL HELP    

                                              THE STUDENTS TO SEE

                       N                    THE RELATIONSHIPS/

                                               EXTENSIONS                                                                                          

 

I – D

 

 

 

RATIONAL NUMBERS

 

M7.25

The students will understand the set of rational numbers as an extension of the set of integers

 

rational number (Q)

 

fraction

 

decimal

 

Q = {any number that can be expressed as the ratio of a to b where a and b are integers and b is not equal to zero.}

 

This includes fractions and terminating/repeating decimals.

 

Give adequate practice in identifying numbers in their sets.

 

OPERATIONS – GRADE 7

 

 

SCOPE

and

SEQUENCE

 

SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXAMPLE

 

PROBLEM SOLVING EXAMPLE

 

 

CONNECTIONS INTEGRATION

 

RESOURCES

 

 

USE CONCRETE OBJECTS TO MODEL OPERATIONS

 

Manipulative materials—connecting cubes, blocks centimeter cubes, beans, etc.  should be used frequently when modeling concepts.

 

Understanding is built when skills are presented following the concept continuum.

 

 

OPERATIONS INTRODUCED AND DEVELOPED IN PROBLEM-SOLVING CONTEXT

 

When operations are presented, it is important to give purpose to the learning by presenting the material in a problem-solving/real life context.  Equations should never be presented in  isolation until mastery has occurred.

 

 

 

 

 

 

 

USE SYMBOLS FOR OPERATIONS

 

Refer to “symbols” in Readiness and Number Concepts section of these guidelines.

 

 

 

 

 

ADD SINGLE-DIGIT AND MULTI-DIGIT NUMBERS

 

Review and maintain material presented at earlier levels.  Extend through millions.  Students should make frequent use of the calculator to check material which they have already mastered.

                                                                   

 

 

 

 

 

 

OPERATIONS – GRADE 7

PROPERTIES OF

OPERATIONS

 

 

 

 

Review the following properties of operations:

 

 

Properties

                                                                              +                                                      X

 

Commutative

                                                       a + b = b + a                                                    ab=ba

 

 

 

Associative

                                                            (a+b) +c = a + (b+c)                                    (ab)c = a(bc)

 

 

 

Identity      

                                                  a + 0 = a                                                       1 . a = a

 

Distributive

 

ab + ac = a(b + c)

 

 

Apply these properties to each set of numbers:  Natural, Whole, Integers

 

Integrate into the context of other lessons.

 

ESTIMATION

 

SUMS

 

DIFFERENCES

PRODUCTS

QUOTIENTS

 

 

 

Estimation in all operations and with all sets of numbers should be reviewed and maintained.  Estimation is a key skill and should be interwoven into every lesson involving operations.

 

Integrate into the context of other lessons

 

 

 

 

 

OPERATIONS – GRADE 7

 

SCOPE

and

SEQUENCE

 

SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXAMPLE

 

PROBLEM SOLVING EXAMPLE

 

 

CONNECTIONS INTEGRATION

 

RESOURCES

 

I

 

OPERATIONS WITH POWERS AND EXPONENTS

 

 

 

 

 

 

 

 

M7.26

The students will learn that when multiplying the same base number, the operation can be simplified by adding the exponents; when dividing by the same base number, the operation can be simplified by subtracting the exponents.

 

power

exponent

base

negative

exponents

 

 

6²●6⁵=6⁷

 

4⁹÷4⁶=4³

 

When the exponents of ten decrease by one, what happens to the products?

 

Technology

Computer programs dealing with numbers and bases.

 

Use a calculator to evaluate equations with exponents.

 

 

 

M

 

INTERPRET REMAINDERS

 

 

M7.27

The students will interpret the remainder in a division problem and will decide whether the remainder should be written as a fraction or a decimal or whether the answer should be rounded up or rounded down.

 

remainder

 

Each small box of candy takes up three square feet of space on a layer of a box.  How many small boxes can be placed on a layer of containing 40 square feet?

 

(using a decimal or fraction does not make sense.)

 

$23.00 was divided among four students.  How much will each receive?

 

Rounding the decimal to hundredths place makes the most sense.

 

Language Arts – Have the students create their own original word problems requiring reasonable answers.  Have them conduct a newspaper scavenger hunt for situations which require exact answers.

 

 

 

 

OPERATIONS – GRADE 7

 

SCOPE

and

SEQUENCE

 

SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXAMPLE

 

PROBLEM SOLVING EXAMPLE

 

 

CONNECTIONS INTEGRATION

 

RESOURCES

 

I - D

 

SQUARE ROOT

 

 

 

 

 

 

 

 

M7.28

After comprehending the concept of square root, the students will find the square root of a number in one of two ways:

 

1)  Estimation

2)  Calculator

                                                                      

                                                                    

                                                     

1)  

 

square root

radical sign

 

 

Estimation:

To find the square root of 225

 

Note that for every two digits in the square there will be one digit in the square root.  Therefore, there will be 2 digits in the square root of 225. This narrows the answer to a number between 10 and 99.

 

Use the guess and test method to narrow down even further.

 

12 x 12 = 144

    too low

19 x 19 = 361

    too high

15 x 15 = 225

 

 

The seventh grade packed 144 cans of food in cartons.  The number of cans in each carton equaled the number of cartons they packed.  How many was this?

 

Math:

Estimation, problem solving.

 

Study Skills:

Students should memorize the table of squares and square roots for whole numbers through 12.

 

Language Arts: Idioms—What is a “square” root?

 

 

 

 

 

 

 

OPERATIONS – GRADE 7

 

 

VOCABULARY OF OPERATIONS

 

Students should read, write and speak using the correct mathematical vocabulary.  Provide ample opportunity during each lesson for the students to become aware of the vocabulary and to use it.  Avoid expressions such as “timesing numbers” instead of multiplying, etc.

 

 

APPLICATION OF OPERATIONS TO OTHER SETS OF NUMBERS

 

D - M

 

INTEGERS

 

The students will apply previously learned skills to integers and will extend these skills to larger and smaller numbers within the set of integers:

 

Operations

Properties

 

                                                                      

                                                                   

                                                     

2)  

 

 

 

Addition,

subtraction,

multiplication

and division applied to integers.

 

Apply properties to all sets of numbers.

 

 

Problem-solving with all operations and in all sets of numbers.

 

Multiple applications in all content areas and in many aspects of real life.

 

 

 

 

 

 

 

 

 

 

PROBLEM SOLVING – GRADE 7

 

 

SCOPE

and

SEQUENCE

 

TOPIC -SKILL

 

 

OBJECTIVE

 

VOCABULARY

 

EXPLANATION - EXAMPLE

 

CONNECTIONS

 

RESOURCES

 

M

 

USE A PLAN FOR PROBLEM SOLVING

 

 

 

 

 

 

 

 

M7.29

The students will use a 4/5 –step plan for problem-solving

                                                                   

                                                     

3)  

 

Understand

Plan

Do

Check

Answer

Statement

 

Alternate Plan

1.        Explore

2.        Plan

3.        Solve

4.        Examine

 

strategy

 

Alert!! Addition, Subtraction, Multiplication and division are operations not strategies.  An operation is not a plan in itself, but a means to carry out a plan.

 

 

 

Understand:

   What is known?

   What must be found out?

   Are there any hidden questions?

   Do I need an estimate or an exact answer?

 

Plan:

   Choose a strategy.  (a procedure to follow in solving the problem.)

 

Do:

   Carry out the plan.

 

Check:

   Is the answer reasonable?

   Does it answer the given question?

   If an operation was used to carry out a plan, use its complement to check the computation.

   Check using an alternate strategy.

 

Answer  Statement:

   Re-phrase the question in terms of an answer statement.

 

 

 

Language Arts—

   Reading Comprehension

   Reading for main ideas and details

   Declarative and Interrogative Sentences

 

Study Skills-

-mapping,

outlining

Following directions Logical reasoning Decision making Critical thinking skills

 

Science:

Scientific

Method

 

Research:

George Polya,

Mathematician

  

 

A Problem Solving Chart, listing the steps in the problem-solving method would benefit students.

 

 

PROBLEM SOLVING – GRADE 7

 

 

SCOPE

and

SEQUENCE