• Climate• Biomes• The Environment

1. Human Beings

The HumanBody

15 • Human Beings

• Human Diversity• Our Ancestors

2. Nutrition 19 • Digestion• Respiration and Excretion• Circulation (I)• Circulation (II)

3. Behavior 35 • The Senses• The Nervous System• The Skeletal-Muscular System• Movement

4. Earth andthe Universe

Earth2

49 • The Universe• The Solar System• The Movements

of Earth

5. The ChangingEarth

63 • Features of Earth• The Internal Forces

of Earth• External Changes

6. Matterand Energyon Earth

77 • Earth’s Matter• Solar Energy• Earth Is a

Magnet

6 Contents

7. The Environment

TheEnvironment

389

UNIT PAGE INFORMATION

Index 103

Index 103

Index 104

2

Multicultural EducationPresent-Day Nomadic Tribes

Health EducationSunlight and Skin

Health EducationIllegal Drugs

Multicultural EducationThe Mir Space Station

Multicultural EducationOutdated Devicesto Detect Earthquakes

Environmental EducationEarth’s Magnetic Field and Turtles

• Fossils• Preservation

of PrehistoricPaintings

• A Bird Gizzard• Blood Donation

• Examine the Shape andFunction of the Spinal Column

• Research Using Animals

• Eclipses• The Cost of Studying

the Universe

• Formation of the Continents• Public Works and the

Environment

• How a Bell Works• The Use of Crude Oil

• Inside theHuman Body

• Primates

• Blood• Organ

Transplants

• Changes in theHuman Body

• The Moon• Space Explorers

• Volcanoes and Islands• Landscapes Formed

by Erosion

• Lenses and Mirrors

Environmental EducationBiosphereReserves

• Characteristics of TemperateForests

• Separating Garbage

• The Desert• The Rain Forest

PHOTOGRAPHS INVESTIGATE / DEBATE CONTENT AREAS

3

4

6 Procedures

• Observe, interpret and draw diagrams of the human body and its main organs and systems.

• Organize information in outlines and charts.• Solve problems related to nutrition and behavior.• Compare human organs and systems with those of

other animals.• Select habits related to our health.• Sequentially organize the different stages in the life of

human beings.

The HumanBody

1

• Divide the universe into its components: galaxies, systems, celestial bodies.

• Classify celestial bodies and Earth according to differentcriteria: luminous/nonluminous, color, shape, size, etc.

• Look at photographs of different celestial bodies, with emphasison Earth and the Moon.

• Make outlines on the different features of Earth.• Hypothesize on the changes in landscapes.• Explain phenomena related to energy and Earth’s matter.

Earth2

• Recognize the main characteristics of tropical, polar and temperate climates.

• Complete food chains.• Look at photographs and pictures of different biomes.• Explain how human activity can affect natural landscapes.• Correctly classify specific animal and plant species in their

corresponding biome.

TheEnvironment

3