Features at the end of the selection are designed to foster comprehension and encourage constructive response, either personal or literary. The study questions are built upon four levels of comprehension: the personal response, the literal, the interpretive, and the applied. These features encourage the growth of skills needed by students to become independent readers.
Each unit ends
with two complete writing lessons. Each lesson focuses on a form of
writing and guides students through the writing process.
Math
The Nature of Science
What is Science?, Measurement and
the Sciences, Tools and the Sciences
Do you read the newspaper or watch the news on television? Perhaps you
prefer the radio or even science magazines. Whatever your
preference, you know that it's hard to escape hearing about advances in
science. Computers, CD players, microwave ovens, and even hand-held
video games all became possible through discovers in science.Science,
for better or worse, is all around us. It is through science that we
have developed new sources of energy-- and have found ways to make
traditional sources more efficient and less polluting. Science has
given us television, telephones, and other forms of communication. A
list of scientific advances that have improved out lives could fill
this textbook.
What exactly is science? How do scientists fo about making discoveries?
If you think that science is a job for white-coated laboratory workers
who never look up from their microscope or get involved in the world
around them. In this textbook you will find out about the nature of
science and the ways in which scientists investigate the world. You
will have theopportunity to explore and discover something that few
people understand: Science is fun.
Heredity: the Code of Life:
A unicorn is a mythical animal with
the body and head of a horse, the hind legs of a stag, the tail of a
lion, and a single horn in the middle of it's forehead, The unicorn was
not the only mythical beast with a combination of body parts of
different animals. The chimera of Greek mythology had the head of a
lion, the body of a goat, the tail of a serpent, In anchient Egypt, the
Sphinx was constructed as a winged lion with a woman's head. Do you
think any of these creatures could exist in the real world?
Unfortunately, the unicorn, chimera, and Sphinx exist only in people's
imaginations. In the real world, living things always resemble their
parents. Horses never give birth to unicorns. I this book you will meet
the man who discovered how living things pass their characteristics on
to their offspring. You will explore the complex molecule-- called
DNA--- that maks heredity possible and also see how the
principles of heredity that apply to plants and animals apply to humans
as well. Finally, you will learn how scientisis are beginning to use
genetic engineering to produceorganisms that will benifit humans in
many ways--organisms almost as exotic, in their own way, as the
creatures of myth.
Dynamic Earth - It is midnight on the island of Hawaii. The stars
shine brightly in a coal-black sky; they look close enough to
touch. But in one part of the sky above a distant mountain ridge,
something strange is happening. Red and purple clouds swirl
rapidly and restlessly, rumbling with thunder. Just below them,
there is an eerie reddish glow. Orange and yellow flames flicker
along the ridge, forming a shimmering curtain of fire. Through
your binoculars, you can see that this is no ordinary fire.
Fountains of molten rock the colors of flame leap from cracks in the
Earth and fall back to the ground in showers of black cinders.
Scarlet streams of molten rock ooze from the cracks and flow away,
creating twisted formations of black rock as they cool. Even as the
island is being built up in one place, it is being broken down in
another. Waves pound against the island's shore, grinding the
rocks of the coast into sand and carrying the sand away. Farther
inland, rocks are broken down into soil by wind, rain, and
plants. Like the rest of the dynamic Earth, the island is
constantly changing.
Heat Energy - The colorful picture above is not a
cartoon or a computer graphic. It is a thermogram of a young girl
and her pet dog. A thermogram (from thermo-meaning heat and -gram
meaning something recorded) is an image formed by the invisible heat
given off by an object. In the thermogram, the hottest areas are
bright and the coolest areas are dark. Doctors can use
thermograms to determine whether parts of the body are functioning
properly. Thermograms illustrate only one way in which heat is
important in our lives. Heat is also important because of its
many uses. Thousands of years ago, early humans discovered fire
and began using it to heat their cave dwellings and to cook their
food. Today, central heating and cooling systems make our homes,
schools, and office building comfortable places
in which to live and work. Heat engines-from steam engines to modern
gasoline engines-help make
our work easier. But heat can also damage the environment if we
are
not careful. What exactly is heat? You will find the answer
to that
question in this textbook. You will also learn about the many
applications of heat in your daily life
Social Studies Grades 7
and 8 are studies of American History based upon the series of books by Joy Hakim, A History of US. The series includes the following books: The First Americans; Making Thirteen
Colonies; From Colonies to Country; The New Nation;
War, Terrible War; Reconstruction
and Reform; An Age of Extremes; and All the People.
This author teaches history through stories, true stories. Hopefully understanding the past will help
students make sense of the present.