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Life Science

  • Photosynthesis Modeling with Pop Beads While studying photosynthesis, students can have difficulty understanding how the carbon in CO2 becomes the carbon in glucose. Use this activity to clarify the process. View »
  • Hydroponic Nutrient Solution After a structured investigation of a hydroponic technology, students design an experiment to test different nutrient solutions. View »
  • Using Algae Beads as a Model for Photosynthesis Introduce students to photosynthesis with fresh water algae. By creating algae beads (made of algae and sodium alginate solution), they indirectly observe the change in concentration of oxygen in beads that are exposed to different amounts of light. View »
  • Observing Plant Cells In this lab students observe Elodea leaves under magnification. They will see cell walls and chloroplasts. From the movement of chloroplasts they will infer that cyclosis, or protoplasmic streaming, is occurring. They also will observe that most chloroplasts are pressed tightly against the cell wall and should infer from this that much of the cell is occupied by a vacuole. View »
  • Having Friends Over for Lunch: The Mutualism of Paramecium bursaria and Endosymbiotic Algae When you teach symbiosis and endosymbiotic theory, consider using Paramecium bursaria, a protist that forms a mutualistic relationship with algae. View »
  • Photosynthesis Introduce students to photosynthesis in a visual way. As Elodea uses carbon dioxide from an initial solution, a change in pH occurs, causing a color change in the solution. View »
  • Survival: Swim to the Light For this lab, students gather observations of algae in full light, change habitat conditions by reducing light, and apply the observations. Essential question: Can all organisms survive equally well in the same habitat? View »
  • Introduction to Photosynthesis Using Coleus Plants The simple exercises that students perform in this lab demonstrate that plants produce glucose through photosynthesis, that plants convert at least some of the glucose to starch, and that sunlight is a critical factor in photosynthesis. View »
  • Making Algae Beads In this activity students create spheres of green algae for use in experiments that explore the metabolic processes of plants. Includes a materials list and step-by-step instructions. View »