Transcript Grade 5 Big Idea 2 - ElementaryMathematics

Big Idea Video
Podcast
Pretest
1. Define the Associative Property. Give an
example.
6. What prerequisite skills should students have
mastered prior to teaching addition and
subtraction of decimals?
2. Define the Commutative Property. Give an
example.
3. Tanya has 8 pennies. Show the value of her
money in three different forms (fraction,
decimal, and money).
4. Write the following in standard form and then
order from least to greatest.
Three and twenty-six hundredths
Twenty-six thousandths
Three tenths
Sixty-two and three tenths
5. Should a teacher introduce addition of decimals
with the rule of lining up the decimals and
adding the digits? Why or why not?
7. Write the following numbers in expanded and
word forms.
0.543 0.309 0.062
8. Solve the following:
6.5 + 1.04 + 0.32 =
4.27 – 2.05 =
9. Use expanded form addition to solve the
following problem:
3.1 + 0.45 + 6.218 =
10. Use an open number line to demonstrate the
following problem:
3.5 – 2.2 =

Properties
Answer: I
Answer: H
Fifth Grade Big Idea 2
Day 2
Develop an
understanding of and
fluency with addition
and subtraction of
fractions and decimals.
The Importance of Decimals….
Roll to a Whole
Directions: Roll a number cube to see who goes first. Player 1 rolls a number cube
and places the digit shown in either the tenths or hundredths place. Player 2 now
repeats the same procedure. The game continues until each player has 5 rolls.
Each player now finds the sum of his or her 5 rolls. The winner is the player with
the sum closer to 1.0 without going over the 1 whole.
Player
1
tenths
hundredths
Player
2
Roll 1
Roll 1
Roll 2
Roll 2
Roll 3
Roll 3
Roll 4
Roll 4
Roll 5
Roll 5
SUM
SUM
tenths
hundredths
DECIMAL
REPRESENTATIONS
• Area
Models
• Base Ten
Blocks
1.36
• Money
1.01
Equivalent Decimals & Fractions
0.8
8
10
$.80
80
100
Decimal Foldable
COMPARE & ORDER DECIMALS
Secret Code Cards
THOUSANDTHS
0.463
463
1000
Fraction Decimal Squares
Tenths
and
Hundredths
MA.5.A.2.1
Represent addition and subtraction of decimals and
fractions with like and unlike denominators using
models, place value or properties.
Models for Addition and Subtraction
Big Idea 2 Benchmark Assessment
Expanded Form Addition and Subtraction
MA.5.A.2.2
FCAT 2.0
Sample Test
Question
Answer:
MA.5.A.2.1
FCAT 2.0
Sample Test
Question
Answer: 2.55
MA.5.A.2.3
Make reasonable estimates of fraction and
decimal sums and differences, and use
techniques for rounding.
Estimating Decimals
Rounding
Benchmark Numbers
Grab and Go Activity Lesson
8.4
MA.5.A.2.2
Add and subtract fractions and decimals
fluently and verify the reasonableness of
results, including in problem situations.
Check for Reasonableness Using an Open
Number Line
MA.5.A.6.5
Solve non-routine problems using various
strategies including “solving a simpler
problem” and “guess, check, and revise.”
Problem Solving
 Problem Solving is a complex and critical topic in mathematics
education, the National Council of Teachers of Mathematics
recognizes it as the central focus of the math curriculum.
 Students need time to explore, discuss and reflect on problem
situation.
 Thinking strategies help students to organize information,
recognize relationships between numbers, effectively draw
conclusions, and provide a path to move towards a solution.
Grab and Go Activity
Lesson 7.7
Podcast Jigsaw
Segment 1: Add and Subtract Fractions Using a Fraction Kit
Segment 2: Add and Subtract Fractions Using the Set Model
Segment 5: Fractions in Real-life Situations
Segment 2: Add Decimals Using Base-Ten Blocks
Segment 3: Subtract Decimals on an Open Number Line
Posttest
1. Define the Associative Property. Give an
example.
6. What prerequisite skills should students have
mastered prior to teaching addition and
subtraction of decimals?
2. Define the Commutative Property. Give an
example.
3. Kathy has 6 dimes. Show the value of her
money in three different forms (fraction,
decimal, and money).
4. Write the following in standard form and then
order from least to greatest.
Two and thirty-four hundredths
Thirty-four thousandths
Two tenths
Forty-two and two tenths
5. Should a teacher introduce addition of decimals
with the rule of lining up the decimals and
adding the digits? Why or why not?
7. Write the following numbers in expanded and
word forms.
0.64 1.07 1.5
8. Solve the following:
5.53 + 2.06 + 0.2 =
3.06 – 1.55 =
9. Use expanded form addition to solve the
following problem:
6.5 + 0.565 + 2.28 =
10. Use an open number line to demonstrate the
following problem:
4.8 – 2.05 =

Follow-up Assignment
How will the information
from this workshop be
incorporated into your
math program?
Complete the Course Appraisal
CE#
Course Appraisals
Must Be Completed
 Appraisals are a State Requirement
 The BRITE system requires that any participant who
has not completed the online appraisal be removed
from the class, leaving no documentation or record
of attendance.
 Requirement for in-service points
HAVE A
WONDERFUL
SUMMER