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      Displaying 101-120 of 6433 resources
      • Thumb image for What's So Special about WaterResource Type: Document

        What's So Special about Water

        Grades: TK/K to 6
        Subjects: Earth & Space Science, Chemistry, Area & Volume, Properties of Matter and 4 additional..
        In this activity about water solubility and density, learners use critical thinking skills to determine why water can dissolve s...
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What's So Special about WaterResource Type: Website / HyperLink

        What's So Special about Water

        Grades: TK/K to 6
        Subjects: Earth & Space Science, Chemistry, Mathematics, Physics and 2 additional..
        In this activity about water's cohesive and adhesive properties and why water molecules are attracted to each other, learners te...
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What's My Ratio?Resource Type: Website / HyperLink

        What's My Ratio?

        Grades: 6 to 9
        Subjects: Rates and Proportions, Number Sense
        In this activity, students use linear measurement and calculators to investigate proportionality and determine the constant rati...
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What's My Ratio?Resource Type: Website / HyperLink

        What's My Ratio?

        Grades: 6 to 9
        Subjects: Professional Development, Number Sense, Rates and Proportions
        In this activity, students use linear measurement and calculators to investigate proportionality and determine the constant rati...
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What's My Number?Resource Type: Website / HyperLink

        What's My Number?

        Grades: TK/K to 9
        Subjects: Parts of a Whole (Fractions, Decimals & Percent), Mathematics, Number Sense, Algebra & Functions
        Combine logic and numbers in this game for all ages. Players start with a 10x10 grid of the numbers 1 to 100. One person chooses...
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What's in the Water?Resource Type: Document

        What's in the Water?

        Grades: TK/K to 9
        Subjects: Classification, Life Sciences, History-Social Science, Earth & Space Science and 4 additional..
        In this investigation learners explore the differences between, and interdependence of, living and nonliving elements in a water...
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What's for Dinner?Resource Type: Document

        What's for Dinner?

        Grades: TK/K to 6
        Subjects: Classification, Life Sciences, History-Social Science, Earth & Space Science and 4 additional..
        In this activity (page 7-8 of the PDF), learners will create a food web and explore food sources for different organisms. They w...
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What Shall I Wear Today?Resource Type: Document

        What Shall I Wear Today?

        Grades: TK/K to 6
        Subjects: Mathematics
        In this activity, learners examine possible combinations (outcomes) by creating different outfits with shirts and pants and crea...
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What on Earth is Plate Tectonics?Resource Type: Website / HyperLink

        What on Earth is Plate Tectonics?

        Grades: TK/K to 9
        Subjects: Earth & Space Science, Weather, Climate & Atmosphere, Geology & the Dynamic Earth, Earth's Resources
        Discusses the crust, mantle and core with text and schematic drawings. Links to other sections of the same publication on the li...
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What Molecules Make the Holes in Bread?Resource Type: Document

        What Molecules Make the Holes in Bread?

        Grades: TK/K to 12
        Subjects: Chemical Reactions & Stoichiometry, Earth & Space Science, Chemistry, Physics and 2 additional..
        In this activity, students will discover why there are holes in bread. By mixing water, yeast and sugar, students will see bubbl...
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What Lives HereResource Type: Document

        What Lives Here

        Grades: TK/K to 6
        Subjects: Classification, Life Sciences, Evolution and Adaptation, History-Social Science and 5 additional..
        In this outdoor activity/field trip, learners explore an aquatic site such as a pond, lake, stream, river or seashore to find an...
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What Kind of Continental Margin am I? Active or Passive?Resource Type: Website / HyperLink

        What Kind of Continental Margin am I? Active or Passive?

        Grades: No grades selected.
        Subjects: Earth & Space Science, Geology & the Dynamic Earth, Earth's Resources
        empty
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What Is Uranium?Resource Type: Website / HyperLink

        What Is Uranium?

        Grades: No grades selected.
        Subjects: Agriculture & Natural Resources, Earth's Resources
        This site contains a detailed description about the properties of uranium and some of its applications in the energy industry. T...
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What is the Hydrosphere?Resource Type: Website / HyperLink

        What is the Hydrosphere?

        Grades: TK/K to 9
        Subjects: Earth & Space Science, Ecology & Ecosystems, Earth's Resources
        This page defines and describes the hydrosphere and provides several photographs.
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What is the fate of CO2 produced by fossil fuel combustion?Resource Type: Website / HyperLink

        What is the fate of CO2 produced by fossil fuel combustion?

        Grades: No grades selected.
        Subjects: Weather, Climate & Atmosphere, Agriculture & Natural Resources
        This assignment uses a box-model to simulate the earth's carbon cycle. The model hindcasts the atmospheric CO2 increase during t...
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What is Fusion?Resource Type: Website / HyperLink

        What is Fusion?

        Grades: 6 to 9
        Subjects: Measurement, Tools, and Data Analysis, Technology, Energy & Work, Physics and 3 additional..
        This page defines and desribes fusion. It explains why we should be interested in it as a renewable source of energy.
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What is Beringia?Resource Type: Website / HyperLink

        What is Beringia?

        Grades: No grades selected.
        Subjects: Geography, Agriculture & Natural Resources, Earth's Resources
        This brief article by the National Park Service describes the history and location of the Bering Sea land bridge.
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What is Alternating Current?Resource Type: Website / HyperLink

        What is Alternating Current?

        Grades: TK/K to 9
        Subjects: Electricity & Magnetism, Physics
        This article discusses alternating current and compares it to direct current. Schematic drawings are included.
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What Is a Theory?Resource Type: Website / HyperLink

        What Is a Theory?

        Grades: 6 to 12
        Subjects: Science
        In these two audio interviews from NOVA Online, learn about the difference between the common understanding of the word "theory"...
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0
      • Thumb image for What Is a Seed?Resource Type: Document

        What Is a Seed?

        Grades: TK/K to 6
        Subjects: Technology, Life Sciences, Structure and Function in Living Things, Measurement, Tools, and Data Analysis, Agriculture & Natural Resources
        In this activity learners observe seeds, discuss what they are, and predict what they will become by creating a picture using ac...
        Contributor: National Science Digital Library (NSDL)
        Views: 0Favorites: 0