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Heredity and Variation: Inheritance Science Object
Science Object
Heredity and Variation: Inheritance
Grade Level: Elementary School, High School, Middle School
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the first of three Science Objects in the Heredity and Variation SciPack. It explores the historical perspective and experiments of Mendel. Sexual reproduction results in the continuity of species accompanied with a great deal of variation in physical traits. One familiar...  [view full summary]

Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the first of three Science Objects in the Heredity and Variation SciPack. It explores the historical perspective and experiments of Mendel.

Sexual reproduction results in the continuity of species accompanied with a great deal of variation in physical traits. One familiar observation is that offspring are very much like their parents but still show some variation— differing somewhat from their parents and from one another. People have long been curious about heredity, using even the most primitive understanding of inheritance to cultivate desirable traits in domesticated species. In the 1800s, Gregor Mendel took his observations of heredity and variation to new heights through carefully designed and executed breeding experiments that generated repeatable inheritance patterns. Mendel developed a model for explaining the patterns he observed, describing discrete units or “particles,” which both segregate and assort independently of one another during inheritance. This model offered a foundational explanation for how variation is generated through sexual reproduction. Although Mendel’s model over-simplified how traits are inherited and expressed, it set the stage for the discoveries of chromosomes and genes from which contemporary genetics grew.

Learning Outcomes:
  • Explain how domestication of plants and animals produced an early understanding of inheritance.
  • Use Mendel’s model to explain patterns of inheritance represented in graphic form (for example, data tables, histograms, etc.).
  • Identify the conditions required for an inheritance pattern to be explained correctly by Mendel’s model.
  • Use data representing patterns of inheritance to support the idea that some observable traits are defined by discrete units of inheritance that segregate and assort independently of one another during inheritance.

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Heredity and Variation: Genes in Action Science Object
Science Object
Heredity and Variation: Genes in Action
Grade Level: Elementary School, High School, Middle School
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the second of three Science Objects in the Heredity and Variation SciPack. It explores sexual reproduction and the process of meiosis.

We now know that structures and functions at the molecular and cellular levels provide the mechanism for reproduction and the continuity...  [view full summary]
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the second of three Science Objects in the Heredity and Variation SciPack. It explores sexual reproduction and the process of meiosis.

We now know that structures and functions at the molecular and cellular levels provide the mechanism for reproduction and the continuity of species. Instructions for development are passed from parents to offspring in thousands of discrete genes, each of which is a segment of a molecule of DNA. An organism’s particular genetic information, coded in its DNA (genotype), contains genes that provide the information necessary to assemble proteins. Offspring of asexual organisms inherit all of the parent's genes. In organisms that reproduce sexually, specialized female and male sex cells (gametes) are formed during a process of cell division called meiosis. Each of these sex cells contains a random half of the parent's genetic information.

When a particular male gamete fuses with a particular female gamete during fertilization, they form a cell with one complete set of paired chromosomes, a combination of one half-set from each parent. This random combining of gametes and their chromosomes during fertilization results in millions of different possible combinations of genes, which causes the offspring genotypes to vary from their parents’. Some of the new gene combinations make little difference in the ability of the offspring to reproduce or survive, some can produce organisms with capabilities that enhance their ability to survive and reproduce, and some can be deleterious, resulting in an inability to survive and/or reproduce. Learning Outcomes:
  • Distinguish among the following structures by describing their relationship to one another: DNA, chromosomes, genes, and alleles.
  • Describe the role genes play in the production of proteins and defining the phenotype of an organism.
  • Compare and contrast the DNA in cells produced during asexual reproduction versus the DNA in gametes produced during meiosis.
  • Indentify and describe those steps within the process of meiosis that explain the random distribution of genotypes among offspring resulting from sexual reproduction.
  • Explain how the recombination of the allele pairs for individual genes during sexual reproduction results in phenotypic variation among offspring.

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Nature of Light: So, What is Light? Science Object
Science Object
Nature of Light: So, What is Light?
Grade Level: Elementary School, Middle School
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the final of four Science Objects in the Nature of Light SciPack. It provides an understanding of how sometimes the nature and behavior of electromagnetic radiation such as light can be best described using a wave model, but at other times it can be best described by using a particle...  [view full summary]
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the final of four Science Objects in the Nature of Light SciPack. It provides an understanding of how sometimes the nature and behavior of electromagnetic radiation such as light can be best described using a wave model, but at other times it can be best described by using a particle model. Particles of light called photons contain discrete amounts of energy. The energy that a photon carries is directly proportional to its frequency. The energy of a photon is inversely proportional to the wavelength of the electromagnetic radiation. Each kind of atom or molecule can only gain or lose energy only in discrete amounts so they can absorb and emit light only at frequencies and wavelengths corresponding to these amounts. These combinations of wavelengths or spectra can be used to identify the substance.
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Heredity and Variation: Mutation Provides Variation Science Object
Science Object
Heredity and Variation: Mutation Provides Variation
Grade Level: Elementary School, High School, Middle School
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the third of three Science Objects in the Heredity and Variation SciPack. It explores the role of mutations in genetic variation. The random combination of genes during sexual reproduction is not the only source of variation in organisms. Although some genes may be passed...  [view full summary]

Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the third of three Science Objects in the Heredity and Variation SciPack. It explores the role of mutations in genetic variation.

The random combination of genes during sexual reproduction is not the only source of variation in organisms. Although some genes may be passed for many thousands of generations with no consequential changes in its function, occasionally a mutation occurs in which a gene may be altered. Gene mutations can occur spontaneously through random errors in copying, or induced by chemicals or radiation that affect the DNA’s chemical bonds. Only if a mutated gene is in a gamete is it possible for copies of it to be passed down to offspring, becoming part of all their cells, altering the nature of some proteins produced by the DNA. The function of a mutated gene may not be altered or it may have its function in protein synthesis altered, which subsequently affects the physical traits expressed in the organism. Mutations provide additional sources of variation that can be helpful, harmful or of no impact on the survival an individual.

Learning Outcomes:
  • Compare and contrast genetic mutations with genetic variations resulting from the process of meiosis.
  • Identify and describe the general processes involved in the creation of genetic mutations.
  • Describe possible consequences of genetic mutations.
  • Describe conditions necessary for genetic mutations to be inherited by an organism’s offspring.

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Electric and Magnetic Forces SciGuide
SciGuide
Electric and Magnetic Forces
Grade Level: Middle School
SciGuides are a collection of thematically aligned lesson plans, simulations, and web-based resources for teachers to use with their students centered on standards-aligned science concepts.

People have known about and experienced electricity and magnetism for thousands of years. However, even accomplished ancient scientists viewed them as separate phenomena, as do novice learners today. It took experiments with electricity and magnetism...  [view full summary]
SciGuides are a collection of thematically aligned lesson plans, simulations, and web-based resources for teachers to use with their students centered on standards-aligned science concepts.

People have known about and experienced electricity and magnetism for thousands of years. However, even accomplished ancient scientists viewed them as separate phenomena, as do novice learners today. It took experiments with electricity and magnetism about two hundred years ago to convince scientists that electricity and magnetism were intimately related. Reproduction of these same experiments can be highly effective in helping to move novice learners toward a more sophisticated understanding of electricity and magnetism. Only the most sophisticated learners can understand how electricity and magnetism are aspects of the same fundamental force, electromagnetic force.

Give your students many, rich experiences with electricity and magnetism. Don’t assume that, because they are surrounded by electrical and magnetic applications and sources, they have experimented with them.
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Earth Structures SciGuide
SciGuide
Earth Structures
Grade Level: High School
SciGuides are a collection of thematically aligned lesson plans, simulations, and web-based resources for teachers to use with their students centered on standards-aligned science concepts.

This web guide explores several natural phenomena that are constantly changing the face of the Earth. These geologic forces not only impact the physical features of our planet but ultimately affect the biosphere in a dramatic way. Historically, the changes...  [view full summary]
SciGuides are a collection of thematically aligned lesson plans, simulations, and web-based resources for teachers to use with their students centered on standards-aligned science concepts.

This web guide explores several natural phenomena that are constantly changing the face of the Earth. These geologic forces not only impact the physical features of our planet but ultimately affect the biosphere in a dramatic way. Historically, the changes have ranged from gradual (such as with the process of mountain building) to the spontaneous (such as with seismic events).
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Member Price: $4.95      Nonmember Price: $5.95
Heredity and Variation SciGuide
SciGuide
Heredity and Variation
Grade Level: High School, Informal Education, Middle School
SciGuides are a collection of thematically aligned lesson plans, simulations, and web-based resources for teachers to use with their students centered on standards-aligned science concepts

The Heredity and Variation SciGuide includes a variety of resources that explore the basics of genetics and variation among organisms, Gregor Mendel and his experiments, how genes influence our traits, meiosis, and mutation as a source of variation.
SciGuides are a collection of thematically aligned lesson plans, simulations, and web-based resources for teachers to use with their students centered on standards-aligned science concepts

The Heredity and Variation SciGuide includes a variety of resources that explore the basics of genetics and variation among organisms, Gregor Mendel and his experiments, how genes influence our traits, meiosis, and mutation as a source of variation.
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Member Price: $4.95      Nonmember Price: $5.95
Heredity and Variation SciPack
SciPack
Heredity and Variation
Grade Level: Elementary School, High School, Middle School
SciPacks are self-directed online learning experiences for teachers to enhance their understanding of a particular scientific concept and its related pedagogical implications for student learning. Unlimited expert content help via email and a final assessment both facilitate and document teacher learning.

The Heredity and Variation SciPack explores patterns of inheritance and discusses...  [view full summary]
SciPacks are self-directed online learning experiences for teachers to enhance their understanding of a particular scientific concept and its related pedagogical implications for student learning. Unlimited expert content help via email and a final assessment both facilitate and document teacher learning.

The Heredity and Variation SciPack explores patterns of inheritance and discusses how offspring can look similar to their parents yet still possess differences within their genetic code. These differences can sometimes affect (positively or negatively) an offspring’s ability to survive and reproduce. Our ancestors used their observations of plants and animals to cultivate crops and domesticate animals. Now, through the use of technology and our current understanding of the DNA molecule, scientists can study individual genes and a gene’s impact on the inheritance of traits.


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Member Price: $14.39      Nonmember Price: $17.99
Nature of Light SciPack
SciPack
Nature of Light
Grade Level: Elementary School, High School, Middle School
SciPacks are self-directed online learning experiences for teachers to enhance their understanding of a particular scientific concept and its related pedagogical implications for student learning. Unlimited expert content help via email and a final assessment both facilitate and document teacher learning.

The Nature of Light SciPack explains the concept of light as electromagnetic radiation and as waves. It covers the electromagnetic...  [view full summary]
SciPacks are self-directed online learning experiences for teachers to enhance their understanding of a particular scientific concept and its related pedagogical implications for student learning. Unlimited expert content help via email and a final assessment both facilitate and document teacher learning.

The Nature of Light SciPack explains the concept of light as electromagnetic radiation and as waves. It covers the electromagnetic spectrum and the effects of wavelength on the interaction of light with different materials, including some examples of phenomena that can be explained by differences in wavelength. It also covers electromagnetic waves as a form of energy.
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Member Price: $14.39      Nonmember Price: $17.99
The Story of Science: Einstein Adds a New Dimension NSTA Press Book
NSTA Press Book
The Story of Science: Einstein Adds a New Dimension
By: Joy Hakim
Edited by: Smithsonian Books—Washington and New York
Grade Level: Elementary School, High School, Middle School
Now, it’s time for your students to look over Albert Einstein’s shoulder as he develops a new kind of physics that points the way to more recent theories of particle physics and quantum mechanics. Joy Hakim will demonstrate how scientific thoughts today are often written in the language of mathematics, such as E=mc2, and explains clearly what this means. Students will learn why relativity and quantum theory are perhaps the most important ideas in...  [view full summary]
Now, it’s time for your students to look over Albert Einstein’s shoulder as he develops a new kind of physics that points the way to more recent theories of particle physics and quantum mechanics. Joy Hakim will demonstrate how scientific thoughts today are often written in the language of mathematics, such as E=mc2, and explains clearly what this means. Students will learn why relativity and quantum theory are perhaps the most important ideas in modern science, maybe of all time.

This is the third book in the Story of Science series. The book is full-color throughout.
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Member Price: $15.96      Nonmember Price: $19.95
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