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Regulating the Internal Environment
This presentation begins with the many problems multicellular organisms which rely on diffusion encounter. There are many diagrams of mammalian organ structures, and they are labelled with their relevant functions. This an excellent...
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Semipermeable Membranes and Bioaccumulation
Beginning biologists place a drop of food coloring into water of differing temperatures to observe the effect on the diffusion rate. They remove the shells from raw eggs and then experiment with osmosis over the remaining membranes....
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In Touch with Apples
Students read "How To Make an Apple Pie and See the World", the story of a girl who traveled the world to find the ingredients to make her apple pie. They conduct a series of interdisciplinary activities including testing their senses,...
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Classroom Aquaponics: Exploring Nitrogen Cycling in a Closed System
Students investigate nutrient cycling in a simplified desktop ecosystem involving aquarium and hydro-ponically grown plants. They set up an aquarium with 10 gallons of water at least a week before the lab is planned and place...
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The Nitrogen Cycle
The nitrogen cycle is the focus of a well-designed science lesson. In it, learners see that plants and animals produce waste products and decompose after death. Many of the waste products include nitrogen which is absobed by other...
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Light and Starch Production in Photosynthesis
Students are given the unique opportunity to see the contrast between parts of a leaf that have photosynthesized and parts of the leaf that have not. This visual image helps students see the results of this biological process. At the...
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Investigating the Uses of Backyard Bacteria
Learners discover that the answers to some of society's waste and clean-up problems may be no further than the soil beneath their feet. They perform a Gram stain on the colonies to determine some of their characteristics.
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Molecular Modeling Activity
Learners explore the concept of molecular modeling and differentiate between saturated and unsaturated compounds. In small groups, they identify molecular formulas, complete a chart comparing alkanes, alkenes, and alkynes, and construct...
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Controlling the Code: Molecules at Word
Young scholars investigate how cells determine which genes will be expressed and which will be silent. In this genetics lesson, students use on-line resources to complete a worksheet and gather information about gene regulation. Lesson...
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Life on the Ocean Floor
Why would water 2700 meters deep suddenly become warmer? Explore this and other ocean floor discoveries through this reading response worksheet. Scholars read information about the organisms discovered by Alvin, a deep-sea submersible....
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Molecular Biology and Primate Phylogenetics
Pairs of high school biologists compare amino acid differences in the beta hemoglobin of different primates. They use the information collected to construct a phylogenic tree. Follow-up discussion questions are provided. This is a...
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Constructing a Phylogenetic Tree
Students are given the opportunity to analyze DNA sequence differences between organisms in order to establish a reasonable picture of the evolutionary relationships between them (Phylogenetic Tree). In the simulation form they are...
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Homologous Shoes
Students examine the concept of homology by observing their shoes and those of their classmates. They summarize the observations of everyone's shoes relating it to chromosomes in cells. They share their observations with the class.
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How to Design an Experiment
Students work together to develop and implement an experiment. They investigate the properties of nylon and construct a mobile of organic materials. They share their experiments with the class.
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Nuclear Magnetic Resonance
Eleven slides are used in this PowerPoint to present how nuclear magnetic resonance works and to give learners an opportunity to interpret examples of nuclear magnetic resonance spectra. Ample information is provided, so this is a...
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Life Substance
For this life substances worksheet, high schoolers will review carbon atoms, monosaccharides, dissaccharides, polysaccharides, lipids, proteins, and nucleic acids. This worksheet has 4 true or false and 17 matching questions.
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Enzymes in Action
Students explore how enzymes are important in the chemical reactions of all living things. In this enzymes and catalysts activity students complete an activity to see how enzymes change living things.
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From One End to the Other
Seventh graders trace a piece of food through the digestive system. They describe the functions of the mouth, esophagus, stomach, etc.
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Glucose
Young scholars conduct various experiments on glucose. In this biology lesson, students differentiate the process of diffusion and osmosis. They test different foods for the presence of glucose and starch.
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DNA from the Beginning Study Guide
Young scholars complete a study guide using a website which is an animated primer on DNA, genes, and heredity. The Web site is organized around key concepts. The web links and study guide are included.
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Inheritance Patterns in Zorks
In this inheritance patterns worksheet, learners create a visual of a Zork using chromosome strips to represent alleles from the father and the mother to determine the traits in the offspring. Students translate the genotype to the...
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Winter
Students explore the nature of water and water molecules. They examine the role of ice on organisms.
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Standard 4-Photosynthesis, Diseases and the Immune System
In this photosynthesis, disease and Immune System worksheet, students fill in the blanks with key terms to complete sentences about the transfer of energy from the sun to plants, enzymes as catalysts in reactions, homeostasis, the immune...
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What's Matter?
Students explore many of the basic properties of matter including atoms, ions, elements, molecules, and density. The class explores an interactive flash-animated Web site to answer questions and clarify misconceptions they might have had...