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CHAPTER 7
Forces at Work
What can forces do?
302
Lesson 1 Tools and Machines
Page 306
Lesson 2 Gravity
Page 314
Lesson 3 Magnets Push, Magnets Pull
Page 322
Lesson 4 Sound
Page 330
2 PS 1. The motion of objects can be observed and measured.
303
Literature Poem
ELA R 2.2.0. Students read and understand grade-level appropriate material.
304
by Valerie Worth
This small
Flat horseshoe Is sold for
A toy: we are Told that it
Will pick up pins And it does, time After time; later It lies about, Getting its red
Paint chipped, being Offered pins less Often, until at
Last we leave it Alone: then
It leads its own Life, trading Secrets with The North Pole, Reading
Invisible messages From the sun.
*6A@j 7DJIjI What can you do with a magnet?
305
Lesson 1
Tools and
How can the woman lift this car?
306 ENGAGE
2 PS 1.d. Students know tools and machines are used
to apply pushes and pulls (forces) to make things move.
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