Breaking Point

Leaf toughness can add to its herbivore appeal. Learns design an experiment to quantify leaf toughness and then perform their procedures. They follow the experiment with a set of questions that ask them to think about how leaf toughness affects its use as a food source.

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CCSS: Designed
NGSS: Designed
Instructional Ideas
  • Encourage pupils to bring leaves from home and different areas to add variety
  • Test man-made items such as paper, aluminum foil, and balloons to make comparisons
Classroom Considerations
  • Allow time to collect and prepare materials prior to the lesson
  • Provides a real-life connection to add relevance
  • Offers tips throughout the lesson to help prepare for common issues
  • None