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Dark gray with abundant gas pocket vesicles.

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Life-Size, Cast From An Actual Specimen

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Topotown gives students the chance to build a 3-D model of a town with hills, valleys, lakes, rivers or streams, highways, streets, houses, barns, stores, and schools.

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Following a step-by-step procedure, students mark, label, and rotate the Earth to illustrate and answer questions on solar intensity, rotation, and revolution, and angles of radiation.

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When minerals, rocks, and fossils cannot be accurately identified by macroscopic observation and testing, thin section slides can reveal the composition and structure of the specimens on a microscopic level.

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Fightly cemented, medium-to-coarse quartz grains.

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Dark gray, composed mostly of pyroxene and olivine.

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The Friction Rod Kit has all the materials needed to perform a variety of electrostatic experiments and demonstrations.

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Two investigations teach the principles of chromatography.

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Gray and poorly sorted, with a gritty texture.

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Interpret the History of a Specific Geologic Era

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Feldspar group; greenish gray alkali feldspar, coarse crystalline, some iridescence.

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Amphibole group; black, coarse, massive.

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Female reproductive system

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Female Reproductive Organ

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Region of the Brain

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Investigate Structures of the Appendix

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Compare and Contrast Segments of the Brain

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Investigate fat tissue characteristics

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Salivary Glad Inside the Lower Jaw

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Represents a Wide Range of Depositional Environments and Rock Textures

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A Survey of Human Tissue and Organs

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Expanded Set Explores Cells and Extracellular Material

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Illustrates the Cellular Structure of Mammalian Skin and Tissues

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Sections of Major Mammalian Reproductive Organs

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Illustrate Comparative Differences Between Multicellular Organisms in Major Phyla

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Illustrates Gland Types that Secrete Directly into the Blood

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The Human Pathology Slide Set offers a selection of common histological afflictions.

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Study Cellular and Tissue Organization of Plant Anatomy and Phylogenetic Comparison

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Explore the Form and Structure of Various Plant Tissues