Science Units
OVERVIEW
As students continue to make choices in their lives, they need to know that choices they make about their bodies may have lifelong effects. This topic, Human Organ Systems, helps students understand that the body is made up of a number of organs and that these organs are parts of systems that can be affected by a variety of factors. Using models and simulations, students will learn the location, structure, and function of the major organs of the respiratory, circulatory, and digestive systems. Students will also develop an understanding of the importance of proper nutrition and exercise to the healthy functioning of organ systems.
UNDERSTANDING STRUCTURES AND MECHANISMS FORCES ACTING ON STRUCTURES AND MECHANISMS
In this strand, students will identify and describe forces acting on and within structures. As they measure and compare external forces (natural or human) acting on structures and their effects on different materials, they will develop a more sophisticated understanding of the concept of force and of ways in which structures respond to forces acting upon them. Students will have an opportunity to apply their learning as they design and build structures or mechanisms.
UNDERSTANDING MATTER AND ENERGY PROPERTIES OF AND CHANGES IN MATTER
Students will examine the environmental impact associated with the production, use, and disposal of such materials. In addition, students will explore the concept of matter. They will learn about commonly found states of matter (solids, liquids, and gases) and the characteristics of each. They will also explore changes of state and investigate the difference between physical changes (which are reversible) and chemical changes (which are not reversible). Concepts learned in this strand about the use of heat to effect changes in matter will be relevant to the study of energy conservation in the next strand. It is necessary to provide opportunities for all students, including students with special education needs, to participate in these or comparable activities.
UNDERSTANDING EARTH AND SPACE SYSTEMS CONSERVATION OF ENERGY AND RESOURCES
Energy choices are becoming increasingly important. Making greater use of renewable and alternative sources and conserving energy are options that students need to know about if we are to sustain our present standard of living and ensure adequate energy supplies for future generations. Students must also recognize that there are immediate and long-term impacts and costs associated with every choice.
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