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Grade 07 Science - EC: S7.B.1.1.2

Grade 07 Science - EC: S7.B.1.1.2

Continuum of Activities

Continuum of Activities

The list below represents a continuum of activities: resources categorized by Standard/Eligible Content that teachers may use to move students toward proficiency. Using LEA curriculum and available materials and resources, teachers can customize the activity statements/questions for classroom use.

This continuum of activities offers:

  • Instructional activities designed to be integrated into planned lessons
  • Questions/activities that grow in complexity
  • Opportunities for differentiation for each student’s level of performance

Grade Levels

7th Grade

Course, Subject

Science

Activities

  1. List three organelles found in a cell and describe their functions.

  2. Explain how the characteristics of a bald eagle help it survive.
  1. Summarize how oak trees get the water and nutrients they need to survive.
  1. Explain how the characteristics of a cactus help it survive in the desert.  Would these characteristics be helpful or hurtful if the cactus was moved to a deciduous forest in Pennsylvania?  Explain your thinking.

  2. What adaptations would be necessary for a cactus to survive in Pennsylvania?  Explain why these adaptations would be necessary for survival.

Answer Key/Rubric

  1. Acceptable responses may include, but are not limited to:

    • Cell membrane:  regulates movement of materials into and out of the cell
    • Nucleus:  holds the cell’s DNA
    • Mitochondria:  creates energy for the cell
    • Vacuole:  holds water, waste, or other materials within the cell
    • Cell wall:  gives a plant cell its rigid structure

  2. Acceptable responses may include, but are not limited to:

    • Sharp talons to catch prey
    • Sharp talons to perch in trees
    • Sharp talons and sharp beak to protect against predators
    • Sharp beak to eat meat
  1.  Acceptable responses may include, but are not limited to:

    • Tree roots absorb water.
    • Xylem is a system of cells that carry water throughout the tree.
    • Photosynthesis occurs in the leaves.
    • Chloroplasts contain chlorophyll needed for photosynthesis.
    • Phloem is a system of cells that carry nutrients throughout the tree and to the leaves.
    • The leaves will use energy from the sun and nutrients delivered by the phloem to create food for the tree.
  1. Acceptable responses may include, but are not limited to:

    • Cacti store moisture in their stem because they do not have leaves.
    • Cacti absorb carbon dioxide at night when it is cooler.
    • Some cacti have a ribbed surface that expands without splitting when a lot of water is absorbed.
    • Cacti have a waxy surface with reduces evaporation and prevent insects from penetrating into the interior.
    • Cacti also have spines that shade the skin, protect against animals, and insulate during cold or dry weather.
    • These characteristics are not necessary in a deciduous forest, but they would not hurt the plant’s chance of survival.

  2. Acceptable responses may include, but are not limited to:

    • Take in carbon dioxide throughout the day – night temperatures may be too cold for cacti
    • Grow leaves to gather more energy from sunlight for photosynthesis
    • Ability to limit water intake – more water in PA than in the desert, too much water may kill the cactus
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