NSTA RSS Feeds 

Search Results

 
Sort by:
Results: 1 - 10 of 2239 1 2 3 4 5 6 7 8 9 ... 224 Next
Drops to the Ocean: A GIS Study of River Basins Book Chapter
Book Chapter
Drops to the Ocean: A GIS Study of River Basins
By: M. Gail Jones, Amy R. Taylor, and Michael R. Falvo
Grade Level: High School, Middle School
Water is a critical element of life. It plays a crucial role at many scales from singles cells to huge river systems. In this investigation, students explore local, regional, and global river basins using GIS as a tool. The study begins with an examination of river basins on paper maps, followed by observations at different levels of detail revealed with interactive GIS maps. These exercises allow students to explore water systems across a range of...  [view full summary]
Water is a critical element of life. It plays a crucial role at many scales from singles cells to huge river systems. In this investigation, students explore local, regional, and global river basins using GIS as a tool. The study begins with an examination of river basins on paper maps, followed by observations at different levels of detail revealed with interactive GIS maps. These exercises allow students to explore water systems across a range of scales.
[hide full abstract]
Member Price: $2.79      Nonmember Price: $3.49
Zoom Zoom: Magnification Book Chapter
Book Chapter
Zoom Zoom: Magnification
By: M. Gail Jones, Amy R. Taylor, and Michael R. Falvo
Grade Level: High School, Middle School
As science extends into the very large and the very small ends of the scale, the images of objects and materials lose recognizable contexts and can be very complex. New advances in microscopes and telescopes allow us to zoom in on very tiny and very distant objects and see amazing new worlds. This investigation involves students in thinking about the changes in scale that take place as we zoom in on very small and very large objects.
As science extends into the very large and the very small ends of the scale, the images of objects and materials lose recognizable contexts and can be very complex. New advances in microscopes and telescopes allow us to zoom in on very tiny and very distant objects and see amazing new worlds. This investigation involves students in thinking about the changes in scale that take place as we zoom in on very small and very large objects.
[hide full abstract]
Member Price: $2.79      Nonmember Price: $3.49
Your World or Mine? Different Perspectives Book Chapter
Book Chapter
Your World or Mine? Different Perspectives
By: M. Gail Jones, Amy R. Taylor, and Michael R. Falvo
Grade Level: High School, Middle School
Is the glass half-empty or half-full? That depends on your perspective. Differences in vantage point or prior knowledge can lead to different interpretations or conclusions. Scientists also have various perspectives on new discoveries or the results of experiments. In this activity, students will gain awareness of differing perspectives and consider how scientists must sometimes work together to navigate challenge concepts.
Is the glass half-empty or half-full? That depends on your perspective. Differences in vantage point or prior knowledge can lead to different interpretations or conclusions. Scientists also have various perspectives on new discoveries or the results of experiments. In this activity, students will gain awareness of differing perspectives and consider how scientists must sometimes work together to navigate challenge concepts.
[hide full abstract]
Member Price: $2.79      Nonmember Price: $3.49
Eye in the Sky: An Introduction to GIS & Scale Book Chapter
Book Chapter
Eye in the Sky: An Introduction to GIS & Scale
By: M. Gail Jones, Amy R. Taylor, and Michael R. Falvo
Grade Level: High School, Middle School
New computer technologies allow us to examine scientific data at a variety of different scales from global to local. In this investigation students use Geographic Information Systems (GIS) as a tool to investigate different questions related to the environment. Questions on subjects ranging from changes in tree canopy to Africanized bee habitats or climate changes can be investigated with GIS.
New computer technologies allow us to examine scientific data at a variety of different scales from global to local. In this investigation students use Geographic Information Systems (GIS) as a tool to investigate different questions related to the environment. Questions on subjects ranging from changes in tree canopy to Africanized bee habitats or climate changes can be investigated with GIS.
[hide full abstract]
Member Price: $2.79      Nonmember Price: $3.49
Captivating Cubes: Investigating Surface Area-to-Volume Ratio Book Chapter
Book Chapter
Captivating Cubes: Investigating Surface Area-to-Volume Ratio
By: M. Gail Jones, Amy R. Taylor, and Michael R. Falvo
Grade Level: High School, Middle School
In this two-part activity, students investigate how surface area-to-volume ratios change with cube size. Students apply those calculations to explore how surface area-to-volume relationships limit the size of cells. Extensions of these activities probe the role that surface area-to-volume relationships play in science contexts.
In this two-part activity, students investigate how surface area-to-volume ratios change with cube size. Students apply those calculations to explore how surface area-to-volume relationships limit the size of cells. Extensions of these activities probe the role that surface area-to-volume relationships play in science contexts.
[hide full abstract]
Member Price: $2.79      Nonmember Price: $3.49
Eggsactly Book Chapter
Book Chapter
Eggsactly
By: M. Gail Jones, Amy R. Taylor, and Michael R. Falvo
Grade Level: High School, Middle School
In this two-part activity, students make inferences about the relationships between egg size, incubation time, and bird size from data sets collected from hundreds of species of birds. Students will also investigate how an egg can exchange oxygen and carbon dioxide through pores in the eggshell. A four-day experiment allows students to explore the process of osmosis in the membrane of a chicken egg.
In this two-part activity, students make inferences about the relationships between egg size, incubation time, and bird size from data sets collected from hundreds of species of birds. Students will also investigate how an egg can exchange oxygen and carbon dioxide through pores in the eggshell. A four-day experiment allows students to explore the process of osmosis in the membrane of a chicken egg.
[hide full abstract]
Member Price: $2.79      Nonmember Price: $3.49
That’s Hot! The Effect of Size on Rate of Heat Loss Book Chapter
Book Chapter
That’s Hot! The Effect of Size on Rate of Heat Loss
By: M. Gail Jones, Amy R. Taylor, and Michael R. Falvo
Grade Level: High School, Middle School
Through the use of common household items such as aluminum pans and thermometers, students will investigate how the size and shape of an object affect the rate of heat loss from the object to the environment. This lesson is relevant to biology, as it relates to the size and shape of animals, their metabolism, and their ability to live in very cold or hot environments. A rate of heat loss that is too fast or too slow may affect the survival of an organism....  [view full summary]
Through the use of common household items such as aluminum pans and thermometers, students will investigate how the size and shape of an object affect the rate of heat loss from the object to the environment. This lesson is relevant to biology, as it relates to the size and shape of animals, their metabolism, and their ability to live in very cold or hot environments. A rate of heat loss that is too fast or too slow may affect the survival of an organism. By modeling different shapes and sizes of organisms using containers of various sizes, students explore how these variables affect the rate of heat loss.
[hide full abstract]
Member Price: $2.79      Nonmember Price: $3.49
Sweet! Exploring Surface Area of Sugar Molecules Book Chapter
Book Chapter
Sweet! Exploring Surface Area of Sugar Molecules
By: M. Gail Jones, Amy R. Taylor, and Michael R. Falvo
Grade Level: High School, Middle School
Two forces that are very familiar to us in our daily lives are gravity and adhesion. The force of gravity on an object, which we commonly refer to as the object’s weight, is proportional to the volume of the object. Adhesion or stickiness, on the other hand, is a surface effect. As objects become smaller, the surface-to-volume ratio increases, changing the relative strengths of these two common forces. At the very small scales, such as the micro-...  [view full summary]
Two forces that are very familiar to us in our daily lives are gravity and adhesion. The force of gravity on an object, which we commonly refer to as the object’s weight, is proportional to the volume of the object. Adhesion or stickiness, on the other hand, is a surface effect. As objects become smaller, the surface-to-volume ratio increases, changing the relative strengths of these two common forces. At the very small scales, such as the micro- (cells) or nanoscales (molecules), the stickiness property completely dominates. This activity demonstrates a crossover point from the dominance of gravity for big objects (sugar cubes) to the dominance of adhesion for smaller objects (powdered sugar grains).
[hide full abstract]
Member Price: $2.79      Nonmember Price: $3.49
Mega Virus Book Chapter
Book Chapter
Mega Virus
By: M. Gail Jones, Amy R. Taylor, and Michael R. Falvo
Grade Level: High School, Middle School
The study of science at the extremes of size often involves creating and testing models of science phenomena. Scientists and engineers often build models at different sizes and scales. These models can be physical, such as a Styrofoam ball model of the solar system; virtual models such as animations; or mathematical models such as are used in predicting weather. In this investigation, students create different-sized models of the common cold virus...  [view full summary]
The study of science at the extremes of size often involves creating and testing models of science phenomena. Scientists and engineers often build models at different sizes and scales. These models can be physical, such as a Styrofoam ball model of the solar system; virtual models such as animations; or mathematical models such as are used in predicting weather. In this investigation, students create different-sized models of the common cold virus (adenovirus) and determine the scaling ratios for each model.
[hide full abstract]
Member Price: $2.79      Nonmember Price: $3.49
Matching Background Color  Book Chapter
Book Chapter
Matching Background Color
By: Robert Stebbins, David Ipsen, Gretchen L. Gillfillan, Judy Diamond (Revised New Edition), and Judy Scotchmoor (Revised New Edition)
Grade Level: Elementary School, Middle School
This chapter introduces an especially important subject in the concealment of animals—countershading. One observes many animals with colors that match the general color of their usual backgrounds. Many leaf-eating insects appear green, for example, making them relatively inconspicuous against their normal background of leaves. The manner of coloration that will provide such a color match is not as obvious as one might imagine. It depends significantly...  [view full summary]
This chapter introduces an especially important subject in the concealment of animals—countershading. One observes many animals with colors that match the general color of their usual backgrounds. Many leaf-eating insects appear green, for example, making them relatively inconspicuous against their normal background of leaves. The manner of coloration that will provide such a color match is not as obvious as one might imagine. It depends significantly on the nature of the lighting. The inquiry-based activities included in this section effectively illustrate this concept.
[hide full abstract]
Member Price: $2.79      Nonmember Price: $3.49
Results: 1 - 10 of 2239 1 2 3 4 5 6 7 8 9 ... 224 Next