K3L18 Light Investigation

Lesson Duration: 45 minutes

Grade: K3

Preparation Time: 15 minutes

Learning Objectives:

1. Understand basic light properties
2. Explore light bending
3. Make predictions about light behaviour

Materials Needed:

- Flashlights (1 for teacher, 6-8 for activities)
- Cards with single gaps
- Collection of safe lenses:
  • Plastic convex lenses (6-8)
  • Plastic concave lenses (6-8)
  • Plastic prisms (6-8)
- Large white paper for path marking
- Washable markers/chalk
- Multiple light sources:
  • Different colored flashlights
  • LED lights
- Safety note: All materials child-safe, no glass components

Lesson Procedure

3 mins - Welcome Time

• Lead "Hello Song"
• Dim room lights partially
• Demonstrate straight light beam
• Show basic light path

5 mins - Discovery Chat  

• Display single gap card
• Show straight light passage
• Introduce simple lens
• Demonstrate light bending

7 mins - Hands-On Challenge 1: Basic Light Paths

• Position gap card
• Create straight light beam
• Mark light path on paper
• Add simple lens
• Show path change
• Guide observation
• Support path marking

12 mins - Hands-On Challenge 2: Lens Exploration

Part 1 (6 mins):
• Introduce different lenses
• Show light bending effects
• Compare path changes
• Mark different paths

Part 2 (6 mins):
• Guide lens testing
• Help track light paths
• Support predictions
• Lead comparison activities

15 mins - Hands-On Challenge 3: Multiple Light Sources

Part 1 (7 mins):

• Set up light sources
• Create multiple beams
• Show intersection points
• Demonstrate color mixing

Part 2 (8 mins):

• Guide light positioning
• Help create patterns
• Support exploration
• Lead prediction games

3 mins - Wrap-Up

• Create final light demonstration
• Turn lights back on gradually
• Lead goodbye song

 

Safety Notes:

- Maintain partial lighting

- Handle lenses carefully

- Keep materials organized

- Ensure proper light spacing

- Maintain constant supervision