4.6­­Interpreting Remainders and Magnitude Estimates.notebook
November 16, 2010
Unit 4 Lesson 6
Interpreting the Remainder
Objective: To provide practice
solving division number stories and
interpreting remainders.
Unit 4 Lesson 6
Nov 12­4:20 PM
1
4.6­­Interpreting Remainders and Magnitude Estimates.notebook
November 16, 2010
Nov 15­1:48 PM
TUESDAY MATH:
1. Revisit MAGNITUDE ESTIMATES
2. Revisit remainder discussion
3. Play Division Top-it
4. DTM / Vocab. Projects
Nov 15­4:28 PM
2
4.6­­Interpreting Remainders and Magnitude Estimates.notebook
November 16, 2010
4.6
Everyday Math
326 ÷ 7
0.1s
897 ÷ 4
1s
0.1s
10s
1s
0.1s
8,760 ÷ 5
100s
10s
1s
1,000s
100s
10s
1,000s
100s
1,000s
Make magnitude estimates for division
by thinking of multiplication models.
TLG Page 260
Getting Started
Mental Math and Reflexes
4.6
Everyday Math
925 ÷ 7
0.1s
76.15 ÷ 15
6,420 ÷ 12
1s
0.1s
0.1s
10s
1s
100s
10s
1s
1,000s
100s
10s
100s
1,000s
1,000s
Make magnitude estimates for division
by thinking of multiplication models.
TLG Page 260
Getting Started
Mental Math and Reflexes
3
4.6­­Interpreting Remainders and Magnitude Estimates.notebook
November 16, 2010
4.6
Everyday Math
36.5 ÷ 6
0.1s
254 ÷ 0.5
7.2 ÷ 8
1s
0.1s
0.1s
10s
1s
100s
10s
1s
1,000s
100s
10s
100s
1,000s
1,000s
Make magnitude estimates for division
by thinking of multiplication models.
TLG Page 260
Getting Started
Mental Math and Reflexes
Everyday Math
4.6
Complete Math Journal page 113 with a partner.
Remember what a magnitude estimate is from our
discussion.
TLG Page 263
Whole Group
Student Journal 113
4
4.6­­Interpreting Remainders and Magnitude Estimates.notebook
November 16, 2010
Student Journal 109
Everyday Math
1
4.6
3
There are 100 minutes of computer time for 8 students
Math
Message to share equally. How many minutes should each student
7
9
5
11
get?
CHALLENGE: Use a problem with a variable.
TLG Page 260
Getting Started
Math Message 5
4.6­­Interpreting Remainders and Magnitude Estimates.notebook
Everyday Math
November 16, 2010
4.6
Steps in solving the problem using
simple pictures as math models.
1. Read the problem. Use symbols to draw a
picture that organizes the given information.
2. Read the problem again, and decide what you want to
find. Write this in a word or short phrase, and represent
it with a letter variable, such as M, for numbers of
minutes.
3. Write a number sentence showing how the letter variable
and other numbers in the problem are related.
4. Solve the number sentence.
TLG Page 261
Whole Group
Steps in solving problems
Everyday Math
4.6
Steps in solving the problem using
simple pictures as math models. (continued)
5. Interpret the quotient and remainder.
Decide what to do about the remainder.
6. Check the solution by substituting 12.5 for M in
students' number sentences and dividing or multiplying.
TLG Page 261
Whole Group
Steps in solving problems
6
4.6­­Interpreting Remainders and Magnitude Estimates.notebook
Everyday Math
November 16, 2010
4.6
As partners, read page 224 in your SRB.
Once you have read this, we will solve the Math Message
problem by using simple pictures as math models.
TLG Page 260
Whole Group
SRB 242
Everyday Math
4.6
Use the same steps in
solving the following problem.
A roller coaster holds 30 people. There are 252 people
waiting for a ride. How many times will the roller coaster
need to run so all 252 people get a ride?
TLG Page 261
Whole Group
Roller Coaster problem
7
4.6­­Interpreting Remainders and Magnitude Estimates.notebook
Everyday Math
November 16, 2010
4.6
Use the same steps in
solving the following problem.
It costs $3 to rent a video. Bonita has $14.
How many videos can she rent?
TLG Page 262
Whole Group
Video rental problem
Everyday Math
4.6
Complete Math Journal pages 115 and 116.
Remember to think about each remainder
and the different ways it can be interpreted.
TLG Page 262
Whole Group
Student Journal 111 and 112
8
4.6­­Interpreting Remainders and Magnitude Estimates.notebook
November 16, 2010
REVIEW AS CLASS
Math Journal 111
COMPLETE ON OWN (COLLECT)
Math Journal 112
9
4.6­­Interpreting Remainders and Magnitude Estimates.notebook
November 16, 2010
Division Top-It!!! SRB: 295
NOTES:
Where are we in our packets???
QUIZ FRIDAY!!!
We will review tomorrow and Wednesday...
Nov 15­2:28 PM
10