K2L20 Shadow Materials

Lesson Duration: 45 minutes

Grade: K2

Preparation Time: 15 minutes

Learning Objectives

1. Differentiate between transparent, translucent, and opaque

2. Predict shadow formation

3. Explore material properties

Materials Needed:

- Flashlights (1 for teacher, 5-6 for activities)

- White projection screen or blank wall

- Collection of materials:

• Transparent: clear plastic, cellophane

• Translucent: wax paper, tissue paper

• Opaque: cardboard, fabric

- Sorting trays (3 per group)

- Material testing frames

- Safety note: All materials child-safe, no sharp edges

Lesson Procedure

3 mins - Welcome Time

• Lead "Hello Song"

• Dim room lights partially

• Show flashlight beam through clear plastic

• Demonstrate light passing through

5 mins - Discovery Chat

• Display different materials

• Show light interaction with each

• Create various shadow effects

• Point out shadow differences

7 mins - Hands-On Challenge 1: Material Discovery

• Hold up clear plastic

• Shine light through

• Show complete light passage

• Repeat with translucent material

• Demonstrate with opaque material

• Invite children to observe differences

• Guide material exploration

12 mins - Hands-On Challenge 2: Shadow Strength

Part 1 (6 mins):

• Display various materials

• Create shadows with each

• Compare shadow darkness

• Show shadow variations

Part 2 (6 mins):

• Guide material testing

• Help create shadows

• Support observation

• Lead comparison discussion

15 mins - Hands-On Challenge 3: Material Investigation

Part 1 (7 mins):

• Place materials in categories

• Test each with light

• Create shadow samples

• Compare results

Part 2 (8 mins):

• Guide material handling

• Help with light testing

• Support categorization

• Lead prediction activities

3 mins - Wrap-Up

• Create final shadow demonstration

• Turn lights back on gradually

• Lead goodbye song

### Safety Notes:

- Maintain partial lighting

- Keep materials organized

- Ensure safe handling

- Monitor flashlight use

- Maintain constant supervision

Reference

For better understanding of forest animal homes and to enrich your teaching preparation, please watch these reference videos:

https://www.youtube.com/watch?v=c21xZqGtjXI

https://www.youtube.com/watch?v=eeqHVvg1Qig

https://www.youtube.com/watch?v=nwzshqLCRPI

https://www.youtube.com/watch?v=z-3KQvceLGA&t=68s

https://www.youtube.com/watch?v=YuUJCNzfoBw

https://www.youtube.com/watch?v=lOIGOT88Aqc

https://www.youtube.com/watch?v=fy7eoMef3e8

Important:
• These videos are for teacher reference only and should not be shown directly to students
• Instead, extract key concepts and adapt them to K1 level using:

Simple vocabulary
Clear, brief explanations
Age-appropriate examples
• Use the provided lesson PowerPoint images to support your teaching
• Focus on interactive demonstration and hands-on activities rather than passive viewing
• Keep explanations concrete and relatable to young learners' experiences

PowerPoint Presentation

Slide 1: Title
Title (font size 60): "Shadow Material Magic!"
Visuals:
• Animated light beam passing through different materials
Teacher Talk: "Hello friends! Let's explore different shadows!"
Safety Note: "Handle materials carefully"

Slide 2: Meet Light Explorer
Title (font size 48): "Meet Light Explorer!"
Visuals:
• Friendly light beam character
• Three different materials
Text:
• "This is Light Explorer!"
• "Light Explorer tests different materials!"
• "Let's explore together!"
Safety Note: "Never look directly at light sources"

Slide 3: Material Types
Title (font size 48): "Different Materials"
Content text (font size 36): "Materials act differently with light!"
Visuals:
• Clear plastic (transparent)
• Tissue paper (translucent)
• Cardboard (opaque)
Text:
• "Some let all light through!"
• "Some let some light through!"
• "Some block all light!"
Safety Note: "Keep materials clean and dry"

Slide 4: Magic Words
Title (font size 48): "Shadow Words"
Content text (font size 36):
• "CLEAR! ????"
• "PARTLY CLEAR! ????️"
• "BLOCKS LIGHT! ⬛"
Visuals:
• Examples of each type
• Shadow effects
Text:
• "Let's learn our special words!"
• "Watch what happens with light!"

Slide 5: Shadow Strength Test
Title (font size 48): "Testing Shadows"
Visuals:
• Different shadow strengths
• Material examples
Text:
• "Let's test our materials!"
• "Which makes the darkest shadow?"
• "Which lets light through?"
Safety Note: "Handle flashlights carefully"

Slide 6: Material Groups
Title (font size 48): "Sort the Materials"
Visuals:
• Three sorting circles
• Material examples
Text:
• "Where does each belong?"
• "Test with light!"
• "Sort the materials!"
Safety Note: "Keep materials organized"

Slide 7: Shadow Investigation
Title (font size 48): "Shadow Scientists!"
Visuals:
• Testing stations
• Investigation steps
Text:
• "Time to be scientists!"
• "Test each material!"
• "What do you discover?"
Safety Note: "Work together safely"

Slide 8: Prediction Time
Title (font size 48): "What Will Happen?"
Visuals:
• New materials
• Shadow examples
Text:
• "Can you guess?"
• "Test your ideas!"
• "Were you right?"
Safety Note: "Stay in your area"