Begin the lesson by exploring the concept of shadows with a simple activity: Place your hand near a wall and shine a flashlight on it. Discuss what students observe and introduce the idea that shadows are formed when light is blocked by an object.
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How Are Shadows Formed?
Learning Objectives
- Understand that shadows are formed when light is blocked by an object.
- Identify sources of light that can create shadows, such as the sun and flashlights.
- Observe and identify objects that cause shadows in different environments.
- Recognize that shadows can be seen during the day and night based on available light sources.
Introduction and Hook
Direct Instruction
Explain the science behind shadows: Shadows are formed when light is blocked by an object. Discuss the role of different light sources, such as the sun and flashlights, in creating shadows.
Introduce the video 'All About Light' to support understanding of light as a form of energy and its role in visibility. This video connects light to everyday experiences, enhancing comprehension of light sources.
Guided Exploration
Watch the video 'Changing the Size of Shadows' to explore how the position of a light source and an object affects the size of the shadow. This visual demonstration helps students understand the relationship between light, objects, and shadows.
Engage students in a discussion about the different objects and environments that can create shadows. Encourage them to observe and identify shadows around them.
Hands-On Activity
Conduct an activity where students use flashlights and various objects to create shadows. Have them experiment with changing the distance and angle of the light source to observe how shadows change.
Use the assessment 'Light and Shadows' to reinforce the concept of shadow formation through hands-on exploration with flashlights and hand gestures.
Independent Practice
Assign the worksheet 'Observing Shadows' where students identify objects creating various shadows depicted in images. This activity helps reinforce their understanding of light and shadow formation.
Check for Understanding
Conduct a quick quiz using the 'Review – Light' assessment to gauge students' understanding of the lesson's key concepts, including light sources and shadow formation.
Try the Quiz
Review and Reflection
Facilitate a class discussion to review what students have learned about shadows and light. Encourage them to share their observations and any questions they may have.
Assessment and Extension
For further exploration, provide the 'Can You See in Darkness?' assessment. This activity encourages students to investigate how light affects visibility, reinforcing their understanding of light and shadow concepts.
