5th_grade_math_5.1_decimals by stariya


									Grade Level/Subject/Topic: math 5th grade
Lorrie Aldridge
Drewry Mason Elem.

Standards Addressed:

5.1               Given a decimal through thousandths, round to the nearest whole number, tenth, or
5.2b              Compare and order decimals in a given set from least to greatest and greatest to least.
          (This lesson could also be used to review SOL 4.3.)

Pre-Assessment: Teacher will write 5-8 rounding and comparing problems on the SMART board and students
will answer them individually on paper.

Defining the Learning Goals: What the student will:

Know (Facts/Vocabulary):
 A decimal point separates the whole number places from the places less than one. Place values extend infinitely in two directions
  from a decimal point. A number containing a decimal point is called a decimal number or simply a decimal.
 To read decimals,
  – read the whole number to the left of the decimal point, if there is one;
  – read the decimal point as “and”;
  – read the digits to the right of the decimal point just as you would read a whole number; and say the name of the place value
      of the digit in the smallest place.
 Decimals can be rounded to the nearest tenth or hundredth in situations when exact numbers are not needed.
 A strategy for rounding decimal numbers to the nearest tenth and hundredth is as follows:
  – Look one place to the right of the digit to which you wish to round.
  – If the digit is less than 5, leave the digit in the rounding place as it is, and change the digits to the right of the rounding place
      to zero.
  – If the digit is 5 or greater, add 1 to the digit in the rounding place and change the digits to the right of the rounding place to
 A procedure for comparing two decimals by examining place value may include the following:
  – Line up the decimal numbers at their decimal points.
  – Beginning at the left, find the first place value where the digits are different.
  – Compare the digits in this place value to determine which number is greater (or which is less).
  – Two numbers can be compared by examining place value and/or using a number line.

Understand (Big Ideas):
    Decimals can be used to represent parts of a whole.
    Decimals could be used in our everyday lives with money and fractions.

Do (Specific Skills student is able to do after the lesson):
     Identify the place values for each digit in decimals through thousandths.
     Read decimal numbers through thousandths from written words or place-value format.
     Write decimal numbers through thousandths from written words or from decimal numbers presented orally.
     Round decimal numbers to the nearest tenth or hundredth.
 Compare the value of two decimal numbers through thousandths.
Materials/Supplies: computers, website www.thatquiz.org, pencils, paper, place value chart, base ten
models of tenths, hundredths, thousandths

Procedures/Activities (Include Marazano's Strategies and Bloom's Taxonomy):

Day 1: Review place value chart and remind students that this is found both in the book and in their daily
Day 2: See menu below

(If) Differentiated Instruction:

What?     content X process        product

How?      readiness     interest X learning profile

Why (What prompted you to differentiate in this way)? As I have begun to review for the SOL test, I was
surprised to find that many students do not remember the place value chart. This tells me they truly did not
“learn” it. Therefore, I am doing something to make it more meaningful to them.

Anchor Activities: www.thatquiz.org practice on decimals.

Post-Assessment: IA quiz

Closure: Use clock partners to discuss how to round and compare whole numbers and decimals.

Teacher Reflection:
(What went well? What would you do differently? Why?)
Choose one activity from below. Be sure to include the activity name on the back of your project.

ST          Poster                                     SF         Lesson Plan

Create poster of a place value chart with at least     Prepare a lesson plan for teaching the place value
10 numbers containing both whole and decimal           chart and rounding numbers in the chart to the
digits. The number of digits per number doesn’t        position of the underlined digit to students who
matter, but the positions millions through the         may not understand it. Your lesson must
thousandths must be represented.                       represent the millions through the thousandths
                                                       place. You may use the index of your math book
Underline 1 digit in each number.                      to give page numbers to your students. You may
Below the poster, copy each number in order from       also tell them what page the chart is on in their
least to greatest. Name the place value position of    daily homework planners. Explain to them step
the underlined digit, its value, and round the         by step how to name the position of a number, its
number to the underlined position.                     value, how to compare them, and how to round
*Be sure to use a ruler and make your poster neat      numbers. You may do this as part lecture, but
so that your classmates will want to look at it as a   you probably want some type of graphics for this,
learning tool.                                         even if it’s just a place value chart.

                                                       Teach your lesson to a partner.

NT     Compare/Contrast                                NF         Kidspiration

Compare and contrast whole numbers versus              Use Kidspiration to create a lesson on the place
decimal numbers. Be sure to include the positions      value chart with at least 5 numbers with both
from the millions place to the thousandths place.      whole and decimal digits from the millions place
This could be done on a Venn Diagram, or in            through the thousandths place. Underline 1 digit
paragraph form. (You will have a hard time             in each number and have a comic character from
finding likenesses. That’s fine, but think hard        the program in your “lesson” who explains the
about the differences).                                value of each underlined digit. Put your numbers
Beneath this diagram, list 5 numbers in order          in order from least to greatest somewhere below
from least to greatest or greatest to least and        your chart. Also have the character explain the
identify which way you ordered them. Underline         process of rounding the number to the position of
one digit in each number, and tell its position, its   the underlined digit.
value and round it to the underlined position.         *Print out your document.
                                     Scoring Rubric for 5.1 Review Menu

__________ 25 pts. Includes 10 numbers in order from least to greatest or greatest to least.

__________ 25 pts. The place value of the underlined digits is properly named.

__________ 25 pts. The numbers are rounded properly to the underlined position.

__________ 25 pts. Score (80% or above) completed on anchor activity (thatquiz.com).

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