TABLE of Contents
INTRODUCTION to Gateways .....................ix
A Word to the Teacher ..............................................................................ix
Gateways to Science Features ................................................................xx
Bibliography ...........................................................................................xxii
UNIT 1: Physical Science, Part 1 .................2
Lesson 1: Safety .......................................................................................2
Lesson 2: Using Your Senses .................................................................12
Lesson 3: Science Tools .........................................................................25
UNIT 2: Physical Science, Part 2 ...............38
Lesson 1: Investigating Properties ..........................................................38
Lesson 2: How
Things Move and Where They Go ..................................53
Lesson 3: Size, Mass, and Changes in Temperature ..............................59
UNIT 3: Earth Science, Part 1 ....................68
Lesson 1: Day and Night ........................................................................68
Lesson 2: Weather ..................................................................................75
Lesson 3: Seasons .................................................................................90
UNIT 4: Earth Science, Part 2 ..................100
Lesson 1: Water ....................................................................................100
Lesson 2: Rocks ...................................................................................112
