by beverly harris - mrs. mccall's fifth grade...
Post on 21-Mar-2020
1 Views
Preview:
TRANSCRIPT
by Beverly Harris
PAIREDREAD Machines to Push and Pull
Informational Text
Program: CR14 Component: LR B-PrintPDFVendor: SRM Grade: 2
FC_BC_CR14_LR_G2_U3W1_L12_APP_18936.indd 3FC_BC_CR14_LR_G2_U3W1_L12_APP_18936.indd 3 6/28/12 2:35 PM6/28/12 2:35 PM
STRATEGIES & SKILLS
G
Photography Credit: Cover Image Source/Gael Conrad/Corbis
**The total word count is based on words in the running text and headings only. Numerals and words in captions, labels, diagrams, charts, and sidebars are not included.
ComprehensionStrategy: RereadSkill: Author’s Purpose
PhonicsLong a: a, ai, ay, ea, ei,
eigh, ey
Vocabulary StrategySimiles
Vocabularyamazing, force, measure, objects, proved, speed, true, weight
Content StandardsScience
Physical Science
Word count: 352**
Program: CR14 Component: LR G-PrintPDFVendor: SRM Grade: 2
Copyright © The McGraw-Hill Companies, Inc.
All rights reserved. No part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written consent of The McGraw-Hill Companies, Inc., including, but not limited to, network storage or transmission, or broadcast for distance learning.
Send all inquiries to:McGraw-Hill EducationTwo Penn PlazaNew York, New York 10121
ISBN: 978-0-02-118936-6MHID: 0-02-118936-6
Printed in the United States.
7 8 9 10 11 12 13 14 DOC 19 18 17 16 15
IFBC_CR14_LR_G2_U3W1_L12_APP_118936.indd 2 11/25/14 2:18 PM
Gree
r & A
ssoc
iate
s, In
c./Su
perS
tock
PAIREDREAD Working Together . . . . . . . . . . 17
Essential QuestionHow do the earth’s forces affect us?
PAIREDREAD Machines to Push and Pull . . 17
Genre Expository Text
by Beverly Harris
Program: CR14 Component: LR G-PrintPDFVendor: SRM Grade: 2
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 1 11/25/14 2:18 PM
Mic
hael
New
man
/Pho
toEd
it
A force pushes or pulls something. Forces can make objects move.
Pushing is a force.
Program: CR14 Component: LRPDF
Vendor: SRM Grade: 2
2
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 2001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 2 2/14/12 1:40 PM2/14/12 1:40 PM
Ande
rson
Ros
s/Bl
end
Imag
es/C
ORB
IS
You push a door. It opens. You pull a door. It shuts.
STOP AND CHECK
What is a force?
Pulling is a force, too.
Program: CR14 Component: LR B-PrintPDFVendor: SRM Grade: 2
3
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 3001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 3 6/22/12 4:12 PM6/22/12 4:12 PM
Jose
Lui
s Pel
aez
Inc/
Blen
d Im
ages
LLC
Gravity pulls the baseball toward the ground.
Gravity is a force. It pulls objects to Earth.
Drop a pencil. It falls. Gravity pulled it. It’s true! You proved gravity works!
4
Program: CR14 Component: LR C-PrintPDFVendor: SRM Grade: 2
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 4001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 4 9/17/12 9:37 PM9/17/12 9:37 PM
Rob
Schu
ster
Friction slows down the mug when it is pushed.
Friction is another force. Friction happens when two things rub against each other. It makes things move more slowly.
pushing force
friction
Program: CR14 Component: LRPDF
Vendor: SRM Grade: 2
5
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 5001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 5 2/14/12 1:41 PM2/14/12 1:41 PM
Gae
l Con
rad/
Corb
is
You can see friction work. Visit a park. Watch.
A girl sits on a slide. Gravity pulls her down. Her clothes rub on the slide. Friction changes her speed.
Smooth things, like a slide, make less friction than bumpy things.
Program: CR14 Component: LR B-PrintPDFVendor: SRM Grade: 2
6
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 6001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 6 6/25/12 1:02 PM6/25/12 1:02 PM
Oce
an/C
ORB
IS
Children play soccer. They kick the ball. It rubs the grass. This makes friction between the grass and the ball. The ball slows down.
The ball moves faster over short grass than long grass.
STOP AND CHECK
What is friction? What does it do?
Program: CR14 Component: LRPDF
Vendor: SRM Grade: 2
7
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 7001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 7 2/14/12 1:41 PM2/14/12 1:41 PM
CORB
IS/S
uper
Stoc
k
Friction helps the children. Their shoes dig into the ground. The friction keeps the children from slipping. The yellow points are cleats that help make friction.
Program: CR14 Component: LRPDF
Vendor: SRM Grade: 2
88
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 8001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 8 2/14/12 1:41 PM2/14/12 1:41 PM
McG
raw
-Hill
Com
pani
es In
c./K
en C
avan
agh,
Pho
togr
aphe
r
One player kicks the ball up. Gravity pulls it down. There is friction between the ball and the air. The ball slows down.
A kick pushes the ball up high.
STOP AND CHECK
How does friction affect a soccer game? How does gravity affect it?
Program: CR14 Component: LRPDF
Vendor: SRM Grade: 2
9
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 9001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 9 2/14/12 1:41 PM2/14/12 1:41 PM
imag
e100
/Pun
chSt
ock/
Get
ty Im
ages
A skater uses friction, too. The skates roll over the path. This creates friction, so the skater does not fall.
Friction between the ground and the skate keeps the skater from falling.
Program: CR14 Component: LR C-PrintPDFVendor: SRM Grade: 2
10
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 10001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 10 9/17/12 9:37 PM9/17/12 9:37 PM
Gre
er &
Ass
ocia
tes,
Inc.
/Sup
erSt
ock
The skater needs to put the stopper down to stop. The stopper drags on the ground. Friction helps the skater stop.
The skater can stop safely.
Program: CR14 Component: LR C-PrintPDFVendor: SRM Grade: 2
11
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 11001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 11 9/17/12 9:37 PM9/17/12 9:37 PM
Tim
Lam
an/N
atio
nal G
eogr
aphi
c/G
etty
Imag
es
Pushing on the pedals makes the bike go.
A boy rides a bike. He uses the brakes to stop. The brakes grab the wheels. That causes friction. The bike slows down and stops.
STOP AND CHECK
How does a boy on a bike use friction?
Program: CR14 Component: LRPDF
Vendor: SRM Grade: 2
12
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 12001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 12 2/14/12 1:41 PM2/14/12 1:41 PM
Hill
Str
eet S
tudi
os/B
lend
Imag
es/G
etty
Imag
es
The football’s shape helps the ball go faster.
Sometimes we want less friction. That is why a football is pointed. It does not make much friction in the air. It zips through the air like a rocket.
Program: CR14 Component: LRPDF
Vendor: SRM Grade: 2
1313
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 13001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 13 2/14/12 1:41 PM2/14/12 1:41 PM
Swimmers put on suits. Their suits make less friction with the water. The swimmers can swim like fish!
Forces are everywhere. Where do you see them?
Program: CR14 Component: LRPDF
Vendor: SRM Grade: 2
14
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 14001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 14 2/14/12 1:42 PM2/14/12 1:42 PM
John
Bie
ver/
Spor
ts Il
lust
rate
d/G
etty
Imag
es
Some swimmers wear special suits so they can swim faster.
Program: CR14 Component: LRPDF
Vendor: SRM Grade: 2
15
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 15001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 15 2/14/12 1:42 PM2/14/12 1:42 PM
Clue Clue
Author’s Purpose
Summarize
Use details to summarize Forces at Work.
Text Evidence
1. How do you know Forces at Work is expository text? Genre
2. Why do you think the author wrote this book? Author’s Purpose
3. What is a football compared to on page 13? Similes
4. Write about how you use forces. Use details. Write About Reading
Summarize
Text Evidence
Program: CR14 Component: LR B-PrintPDFVendor: SRM Grade: 2
16
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 16001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 16 6/22/12 4:13 PM6/22/12 4:13 PM
Compare TextsMachines help us push and pull.
Genre Expository Text
Gravity gives objects weight. We can measure weight. Some things are heavy. They are hard to move.
Machines are tools. They help us work against gravity. Amazing!
Force Push Pull
Moving a grocery cart X
Playing tug-of-war X
Hitting a baseball X
Program: CR14 Component: LR G-PrintPDFVendor: SRM Grade: 2
17
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 17 11/25/14 2:18 PM
Dav
id R
. Fra
zier
Pho
tolib
rary
, Inc
./Ala
my
RampsA ramp is a simple machine. One end is on the ground. The other is lifted up. People can slide a heavy object up the ramp. That is easier than lifting it.
The workers use a ramp to move the piano safely.
Program: CR14 Component: LRPDF
Vendor: SRM Grade: 2
18
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 18001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 18 2/14/12 1:42 PM2/14/12 1:42 PM
Man
chan
/Dig
ital V
isio
n/G
etty
Imag
es
LeversA lever is a simple machine, too. It helps lift heavy things. A wheelbarrow is a lever.
Make ConnectionsHow does friction affect us? Essential Question
Think about a person using a wheelbarrow. Is there any friction? Text to Text
The man uses the handles to move the wheelbarrow.
Program: CR14 Component: LR B-PrintPDFVendor: SRM Grade: 2
19
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 19001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 19 6/22/12 4:13 PM6/22/12 4:13 PM
Purpose To see friction at work
What to Do
Work with a partner. Get a toy car with wheels and a wooden block. Go to a place with no carpet.
Take turns pushing the car and block along the floor. Use the same force. Which item goes farther?
Do this again on a carpet. What happens?
Conclusion Tell how the activity shows friction at work.
Step 1
Step 2
Step 3
Program: CR14 Component: LRPDF
Vendor: SRM Grade: 2
20
001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 20001_020_CR14_LR_G2_U3W1_L12_APP_118936.indd 20 2/14/12 1:42 PM2/14/12 1:42 PM
Literature Circles
Nonfiction
The TopicWhat is Forces at Work mostly about?
VocabularyWhat new words did you learn in the text?
Author’s PurposeWhy did the author write Forces at Work?
Make Connections Which of the examples from Forces at Work have you seen? Which of the tools from Machines to Push and Pull have you used or seen?
Program: CR14 Component: LRPDF
Vendor: SRM Grade: 2
IFBC_CR14_LR_G2_U3W1_L12_APP_119553.indd 3IFBC_CR14_LR_G2_U3W1_L12_APP_119553.indd 3 2/14/12 1:46 PM2/14/12 1:46 PM
www.mheonline.com
Grade 2 • Unit 3 Week 1
GR G • Benchmark 12 • Lexile 220
The Earth’s Forces Science
Program: CR14 Component: LRPDF
Vendor: SRM Grade: 2
FC_BC_CR14_LR_G2_U3W1_L12_APP_18936.indd 2FC_BC_CR14_LR_G2_U3W1_L12_APP_18936.indd 2 3/7/12 12:28 PM3/7/12 12:28 PM
top related