Transcript PowerPoint

2D 2
MAP
Grade 3 MAP D
Trimester 3
Instructional Strategies
Aligned to the 1997
California Content Standards
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
MAP2D
SBA #7
Fractions and Decimals
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
MAP2D
SBA #7
Fractions and Decimals
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
MAP2D
SBA #7
Fractions and Decimals
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
Use Fraction Strips to Find Equivalent Fractions
Equivalent means “the same”.
Fractions are equivalent if they name the same amount.
1
1
1 2

2 4
1
2
1 2 3
 
2 4 6
1
4
1
6
1 2 3 4
  
2 4 6 8
1 2 3 4 6
   
2 4 6 8 12
1
8
1
12
1
3
1
3
1
4
1
8
1
12
1
2
1
12
1
6
1
6
1
8
1
12
1
8
1
12
1
12
1
3
1
4
1
6
1
8
1
12
1
6
1
8
1
12
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
1
12
1
4
1
6
1
1
8
8
1
1
1
12 12 12
* Slide Animates
Use Fraction Strips to Find Equivalent Fractions
Equivalent means “the same”.
Fractions are equivalent if they name the same amount.
Fractions equivalent to one half are outlined in black.
1
1
1 2

2 4
1
2
1 2 3
 
2 4 6
1 2 3 4
  
2 4 6 8
1 2 3 4 6
   
2 4 6 8 12
1
4
1
6
1
8
1
12
1
3
1
3
1
4
1
8
1
12
1
2
1
12
1
6
1
6
1
8
1
12
1
8
1
12
1
12
1
3
1
4
1
6
1
8
1
12
1
6
1
8
1
12
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
1
12
1
4
1
6
1
1
8
8
1
1
1
12 12 12
Slide for Printing
Use Fraction Strips to Find Equivalent Fractions
2
Find a fraction equivalent to .
3
2
1. Find .
3
2. Look up or
down to find a
1
set of
2
1
fractions equal
3
2
to .
1
3
4
3. Count the
1
1
6
6
pieces.
4. Write the
equivalent
fractions.
1
8
1
12
1
8
1
12
1
12
2 4

3 6
1
1
1
2
1
3
1
4
1
6
1
8
1
12
1
8
1
12
1
12
1
3
1
4
1
6
1
8
1
12
1
8
1
12
1
12
1
6
1
4
1
6
1
1
8
8
1
1
1
12 12 12
Do you see another fraction equal to two-thirds?
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
1
2
What Patterns Do You See
in Equivalent Fractions?
1
4
1
6
1
8
1 2 3 4 5
   
2 4 6 8 10
1
12
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
1
4
1
8
1
12
1
12
1
6
1
6
1
8
1
12
1
8
1
12
1
12
1
2
1
4
What Patterns Do You See
in Equivalent Fractions?
Count by 1s
Double
1
6
1
8
1
4
1
8
1
6
1
8
1
6
1
8
1 1 1 1 1 1
12 12 12 12 12 12
1 2 3 4 5
   
2 4 6 8 10
Count by 2s
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
What Patterns Do You See
in Equivalent Fractions?
1 2 3 4
  
3 6 9 12
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
1
3
1
9
1
12
1
6
1
9
1
12
1
6
1
9
1
1
12 12
How Do You Make a
List of Equivalent Fractions?
Count by 1s
4 5
1 2 3



4 8 12 16 20
Count by 4s
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
Compare Fractions using a Number Line
<
Use <, >, = to compare fractions
0
1
0
1
Chapter 18
Lessons 3 & 4
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
Add and Subtract Fractions
_
2 + 1 = 3
5
5
5
Look at the denominator.
If the denominators are the same, the denominator stays the
same.
Hint: It is like a reflection in a mirror.
Add the numerators.
____________________________________________________________________________________________
8 - 2 = _
6
9
9
9
 Look at the denominator.
If the denominators are the same, the denominator stays the
same.
Hint: It is like a reflection in a mirror.
 Subtract the numerators.
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
Chapter 19
Lesson 1,3
MAP2D
SBA #8
Units of Measure
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
up
uart
int
Chapter 23
Lesson 4
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
allon
Customary Units of Length
Y = Yard
1 Yard = 3 feet
1 foot = 12 inches
12 inches
Chapter 23
Lesson 1
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
Use multiplication and/or a table to convert measurements
from a larger unit to a smaller unit.
Ch 23 L 1
Pints
1
2
3
Cups
2
4
?
Capacity
2 pints = __ cups
2x2=4
2 pints = 4 cups
Yards
1
2
3
Feet
3
6
?
Length
2 yards = __ feet
2x3=6
2 yards = 6 feet
Pounds 1
2
3
Ounces 16
32
?
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 4
Weight
2 pounds = __ ounces
2 x 16 = 32
2 pounds = 32 ounces
Find the Rule – Time Conversions
Create a table to show different units of time
Carlos practiced soccer
for 3 hours. How many
minutes did he practice?
Think:
1 hour = 60 mins.
Hours
Minutes
1
60
2
120
Think……1 hour = 60 minutes.
3
180
So…………2 hours = 120 mins., because 60 + 60 = 120
or 2 x 60 = 120
So……… 3 hours = 180 mins., because 60 + 60 + 60 = 180
or 3 x 60 = 180
Ch 22 L 7
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
MAP2D
SBA #9
Problem Solving
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
“Multistep Problem”
U
P
S
Understand: Read the problem and think
about the question. Each word is important.
Missing a word or reading it incorrectly could
cause you to get the wrong answer.
Plan: Think about how you can solve the
problem. Look for key words and numbers.
What do you need to do first? What do you
need to do next?
Solve: Follow your plan, working logically
and carefully. Make sure you solved all
steps needed to answer the problem. Be
sure you answered the question asked.
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
20
“Choose the Operation”
This table will help you decide which operation
you can use to solve the problem.
Add
Join groups of the same or different sizes
Subtract
Take away or compare groups
Multiply
Join equal-size groups
Divide
Separate into equal-size groups
The cafeteria served 132 pizza lunches. Each pizza was cut
into 12 slices. If each student received 1 slice, how many
pizzas were served?
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
21
“Predict and Test”
Sometimes, you can make an educated prediction
to solve a problem and then test your prediction.
Record your predictions with a list or table.
Make a list
Make a table
What are 3 consecutive
Mary is thinking of two
numbers whose sum is 15? numbers. The sum of the
numbers is 15, and the
difference of the numbers is
3.
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3
22
“Write an Equation”
To write an equation, choose a variable to
represent an unknown quantity. Remember
that an equation is a number sentence that
shows that two quantities are equal.
Alan’s class has set up seats for the play. There are 7
seats in each row. There are 56 seats in all. How many
rows of seats are there?
s × 7 = 56 Let s represent the number of rows of
seats. s = ?
23
Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 3