Engage students by discussing how shadows change throughout the day. Use a flashlight and a toy to demonstrate how moving the light source affects the shadow size and shape.
Go to the LessonLesson Plans
Changing Shadows
Learning Objectives
- Understand how the position and height of a light source affect the size and shape of shadows.
- Observe and describe how shadows change in size and shape throughout the day.
- Explain why shadows are longer during sunrise and sunset compared to midday.
- Demonstrate the effect of moving a light source closer or further from an object on the size of its shadow.
Introduction and Hook
Direct Instruction
Explain the relationship between the position of the sun and shadow length. Use diagrams to illustrate how shadows are longer during sunrise and sunset.
Watch the video 'Changing the Size of Shadows' to visually understand how light source position affects shadow size.
Guided Exploration
Conduct an outdoor activity where students observe and record shadow changes at different times of the day.
Discuss observations and relate them to the position of the sun in the sky.
Hands-On Activity
Use a flashlight and various objects to explore how changing the distance and angle of the light source affects shadow size and shape.
Independent Practice
Have students complete the 'Light and Shadows' assessment to reinforce their understanding of how shadows are formed.
Check for Understanding
Ask students to explain why shadows are longer during sunrise and sunset compared to midday.
Review and Reflection
Reflect on the day's activities and discuss how the position and height of a light source affect shadow size and shape.
Assessment and Extension
Use the 'Observing Shadows' assessment to evaluate students' understanding of shadow formation.
Encourage students to explore how different materials affect shadow formation by conducting experiments with transparent, translucent, and opaque objects.
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