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Why Do Leaves Change?

Lesson Plan

Why Do Leaves Change?

Students will be able to identify the reasons why leaves change color in the fall and explain the role of chlorophyll and other pigments.

Understanding why leaves change color connects students to the natural world, introduces basic plant biology concepts, and fosters an appreciation for seasonal cycles. It encourages observation and critical thinking about environmental phenomena.

Audience

Elementary School Students

Time

45 minutes

Approach

Interactive discussion, visual aids, and a hands-on activity.

Materials

Smartboard or Projector, Why Do Leaves Change? Slide Deck, Variety of real leaves (green, yellow, red, brown), White paper, Crayons or colored pencils, Leaf Pigment Journal, Leaf Color Scavenger Hunt Activity, and Colors of Fall Cool Down

Prep

Teacher Preparation

20 minutes

Step 1

Introduction: What's Happening to Our Trees?

5 minutes

  • Begin with a captivating question: "Who has noticed the leaves on trees changing colors recently? What colors have you seen?"
    - Use Why Do Leaves Change? Slide Deck (Slide 1-2) to introduce the topic and pique student interest.
    - Explain that today, we'll become 'Leaf Detectives' to uncover the mystery behind these colorful changes.

Step 2

Exploring Chlorophyll and Other Pigments

15 minutes

  • Use Why Do Leaves Change? Slide Deck (Slides 3-6) to explain chlorophyll and its role in making leaves green.
    - Introduce other pigments like carotenoids (yellow/orange) and anthocyanins (red/purple) that are present but hidden.
    - Discuss how shorter days and cooler temperatures cause chlorophyll to break down, revealing the other colors.
    - Show the gathered real leaves, pointing out the different colors and connecting them to the pigments discussed.

Step 3

Leaf Pigment Journal & Discussion

10 minutes

  • Distribute the Leaf Pigment Journal.
    - Guide students to draw a leaf and label where they think chlorophyll, carotenoids, and anthocyanins might be found (even if hidden).
    - Facilitate a brief discussion about their drawings and understanding.
    - Encourage questions and further exploration of the concepts.

Step 4

Activity: Leaf Color Scavenger Hunt

10 minutes

  • Distribute the Leaf Color Scavenger Hunt Activity.
    - Explain that students will go outside (if possible and safe) or look out the window/at provided images to find leaves of different colors and identify what pigment might be responsible.
    - If going outside, emphasize gentle handling of leaves and not picking them off trees.
    - If staying inside, use the collected leaves or images to complete the activity.

Step 5

Conclusion: Colors of Fall Cool Down

5 minutes

  • Gather students back together.
    - Distribute the Colors of Fall Cool Down exit ticket.
    - Students will answer a quick question about what they learned about leaf color change.
    - Collect cool-downs to assess understanding.
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Slide Deck

The Mystery of Changing Leaves!

Have you seen the trees around us looking different? What's happening to their leaves?

Greet students warmly. Ask: "Who has noticed the leaves on trees changing colors recently? What colors have you seen?" Encourage a brief sharing.

Become a Leaf Detective!

Let's investigate why leaves transform from green to brilliant reds, oranges, and yellows every fall!

Explain that today we'll be 'Leaf Detectives' to uncover the scientific secrets behind these amazing color changes.

Meet Chlorophyll: The Green Maker!

For most of the year, leaves are green because of a special ingredient called chlorophyll.

Chlorophyll helps the leaf make food from sunlight!

Introduce chlorophyll as the 'superhero' that makes leaves green and helps them make food from sunlight. Emphasize that it's what we see most of the year.

Hidden Colors!

But wait! Other colors like yellow and orange are also in the leaves!

They are just hiding behind the powerful green chlorophyll.

These hidden colors come from pigments called carotenoids.

Explain that other colors (yellows, oranges) are actually always in the leaf, but chlorophyll is so strong it hides them. Mention carotenoids.

Fall's Big Secret!

As autumn arrives, days get shorter and the air gets cooler.

This tells the trees it's time to get ready for winter.

The chlorophyll starts to break down and disappear!

Discuss what happens in the fall: shorter days and cooler weather. Explain that chlorophyll starts to disappear, like a fading magic trick.

The Big Reveal!

When the green chlorophyll fades away, the hidden yellow and orange colors can finally shine!

Some trees even make new red and purple colors (called anthocyanins) during the fall!

This is why we see such beautiful fall foliage!

Show how the hidden colors are now revealed once chlorophyll is gone. Introduce anthocyanins, which create reds and purples, and how they are made in the fall.

Your Leaf Pigment Journal

Now it's your turn to be a scientist!

Draw a leaf and show where you think the green, yellow, orange, and red pigments are hiding or shining!

Explain the purpose of the journal: to draw a leaf and show where the different colors/pigments are. Encourage creativity and thinking about what was just learned.

Leaf Color Scavenger Hunt!

Let's find some real-life examples!

Can you find leaves that show us green, yellow, orange, or red? What pigment do you think is making that color?

Introduce the scavenger hunt. Clarify if they are going outside or using provided leaves/images. Emphasize observation.

What Did You Learn Today?

Time to show what you know!

On your 'Colors of Fall Cool Down' paper, write or draw one thing you learned about why leaves change colors.

Explain the cool-down is a quick way to show what they learned today. Encourage them to summarize the main idea of leaf color change.

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Journal

My Leaf Pigment Journal

Name: ____________________________

Date: ____________________________

Part 1: Observe and Draw

Find a leaf (real or from a picture provided by your teacher). Look closely at its colors.

Draw your leaf below. Try to show all the different colors you see, even if they are just small parts!













Part 2: Label the Pigments!

Now, let's think about the hidden and shining colors!

Use your crayons or colored pencils to label where you think each of these pigments would be in your leaf, or what part of the leaf shows their color.

  • Chlorophyll (Green Maker)
  • Carotenoids (Yellow/Orange Hiders)
  • Anthocyanins (Red/Purple Makers - only in some leaves in fall!)













Part 3: Reflect

What is one new thing you learned about why leaves change color?







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Activity

Leaf Color Scavenger Hunt!

Name: ____________________________

Date: ____________________________

Instructions:

Your mission, Leaf Detective, is to find leaves of different colors! You can look outside (if your teacher says it's okay) or examine the leaves your teacher has provided.

For each leaf you find, draw it and then decide what color pigment you think is making it look that way. Remember our secret agents: Chlorophyll (green), Carotenoids (yellow/orange), and Anthocyanins (red/purple)!


Leaf 1

Color(s) I see: ____________________

What pigment do you think is making this color? ____________________

Draw your leaf here:








Leaf 2

Color(s) I see: ____________________

What pigment do you think is making this color? ____________________

Draw your leaf here:








Leaf 3

Color(s) I see: ____________________

What pigment do you think is making this color? ____________________

Draw your leaf here:








Leaf 4 (Bonus!)

Color(s) I see: ____________________

What pigment do you think is making this color? ____________________

Draw your leaf here:







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Cool Down

Colors of Fall Cool Down

Name: ____________________________

Date: ____________________________

What did you learn today, Leaf Detective?

Write or draw one important thing you learned about why leaves change colors in the fall.















## Bonus Question:

If you were a tree, what color would you want your leaves to turn in the fall and why?







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Lesson Plan

Resolving Professional Disagreements

Students will learn and practice strategies for respectful and effective conflict resolution in professional settings.

Effective conflict resolution is a critical life skill. By learning to navigate disagreements constructively, students can maintain positive professional relationships and achieve better outcomes in their careers and personal lives.

Audience

11th Grade Student

Time

50 minutes

Approach

Through direct instruction, guided discussion, and reflective journaling.

Materials

Constructive Conflict Communication Slide Deck, Dialogue for Difficult Conversations Script, and Conflict Resolution Reflection Prompts Journal

Prep

Prepare Materials

15 minutes

Step 1

Warm-Up: What Is Conflict?

5 minutes

  • Begin by asking students to briefly reflect on what conflict means to them and how they typically handle disagreements. (e.g., "Do you try to avoid it, confront it directly, or something else?")
    - Facilitate a quick pair-share or brief class discussion. (Teacher Note: This is a low-stakes way to activate prior knowledge and introduce the topic.)

Step 2

Understanding Conflict in Professional Settings

10 minutes

Step 3

Key Strategies for Constructive Conflict

15 minutes

Step 4

Practice and Reflection

15 minutes

Step 5

Wrap-Up: Key Takeaways

5 minutes

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Slide Deck

How Do You Navigate Tough Talks?

Strategies for Respectful & Effective Conflict Resolution

Why is this important for your future?

Welcome students and introduce the day's topic: navigating tough talks. Emphasize the importance of these skills for their future.

What is Conflict?

  • Disagreements or clashes between individuals or groups.
    - Can be about ideas, needs, values, or goals.
    - Is conflict always bad?

Ask students to think about a time they had a disagreement. How did they feel? How did they react? What was the outcome?

The Upside of Disagreement

  • Opportunity for growth and understanding.
    - Can lead to better solutions and innovation.
    - Strengthens relationships when resolved respectfully.

Discuss how conflict is a natural part of human interaction and isn't inherently negative. It's how we handle it that matters.

Your Conflict Compass

How do you typically react when there's a disagreement?

- Do you try to avoid it?
- Do you try to make everyone happy?
- Do you stand your ground firmly?
- Do you look for a middle ground?
- Do you work together for a win-win?

Introduce the idea that different people approach conflict differently. Briefly touch on avoidance, accommodation, competition, compromise, and collaboration without going into deep detail. Just acknowledge these are different styles.

Why Professional Communication Matters

  • Maintaining positive working relationships.
    - Achieving team goals.
    - Presenting a professional image.
    - Career advancement.

Transition to professional settings. Why are these skills particularly important in a job or team environment?

Strategy 1: Active Listening

  • Listen to Understand, Not Just to Reply.
    - Pay full attention to the other person.
    - Ask clarifying questions.
    - Summarize what you heard to confirm understanding.

Introduce active listening as the first key strategy. Explain what it means: not just hearing, but understanding.

Strategy 2: Use 'I' Statements

  • Focus on your feelings and perspective, not on blaming.
    - "I feel [emotion] when [specific action] because [impact]."

Explain 'I' statements and why they are more effective than 'you' statements for expressing feelings without blaming.

Strategy 3: Choose Your Moment

  • Find a private, neutral space.
    - Ensure both parties are calm and ready to talk.
    - Set a positive intention: "I want to understand and find a solution."

Discuss the importance of choosing the right time and place for a difficult conversation and how to set a positive tone.

Strategy 4: Focus on Solutions

  • Brainstorm possible solutions together.
    - Look for common ground and mutual benefit.
    - Be willing to compromise and collaborate.

Explain how focusing on shared goals can shift the conversation from adversarial to collaborative.

Recap: Navigating Tough Talks

  • Active Listening
    - Using 'I' Statements
    - Choosing Your Moment
    - Focusing on Solutions

    Practice makes perfect!

Summarize the key strategies and open for any final questions.

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Script

Dialogue for Difficult Conversations

Introduction (5 minutes)

Teacher: "Good morning/afternoon, everyone. Today, we're diving into a really important life skill: 'How Do You Navigate Tough Talks?' Think about it – disagreements are a part of life, whether it's with friends, family, or even future colleagues. Our goal today is to learn how to handle these moments respectfully and effectively."

Teacher: "To start, I want you to take a moment to reflect. What comes to mind when you hear the word 'conflict'? How do you usually react when you find yourself in a disagreement? Do you try to avoid it, confront it directly, or is there another way you approach it? You can think to yourself or jot down a quick note.


"

Teacher: "Now, turn to a partner and briefly share your thoughts. There's no right or wrong answer here; we all have different styles. We'll bring it back to the whole group in a couple of minutes."

(Allow 2-3 minutes for partner sharing. Circulate and listen to student responses.)

Teacher: "Alright, let's hear from a few pairs. What did you discuss? Were there any common themes or surprising insights?"

(Facilitate a brief whole-class discussion, linking responses to the idea that conflict is natural and how we react varies.)

Understanding Conflict in Professional Settings (10 minutes)

Teacher: "Great insights! Now, let's shift our focus a bit to professional settings. Imagine you're working on a team project, or you're in a job, and a disagreement comes up. Why is it particularly important to handle conflict well in those environments?"

(Display Slide 5: Why Professional Communication Matters from the slide deck.)

Teacher: "As you can see on the slide, constructive communication helps maintain relationships, achieve goals, and even build your reputation. It's not about avoiding conflict, but about facing it in a way that leads to positive outcomes."

Teacher: "So, what is conflict? It's not always a shouting match. It can be a simple difference of opinion, a misunderstanding, or a clash of ideas. And actually, conflict isn't always bad. Can anyone think of a time when a disagreement led to something positive?"

(Allow time for student responses, guiding them to see conflict as an opportunity for growth and better solutions.)

Key Strategies for Constructive Conflict (15 minutes)

Teacher: "Excellent points. Now, let's get into some specific strategies that can help us navigate these 'tough talks' more effectively."

(Display Slide 6: Strategy 1: Active Listening)

Teacher: "Our first strategy is Active Listening. This means more than just hearing words. It means truly trying to understand the other person's perspective. It involves paying full attention, asking clarifying questions, and even summarizing what you heard to make sure you got it right. Why do you think summarizing what someone said is so powerful?"

(Allow for student responses, emphasizing empathy and preventing misunderstandings.)

(Display Slide 7: Strategy 2: Use 'I' Statements)

Teacher: "Next, we have Using 'I' Statements. This is a game-changer. Instead of saying, 'You always interrupt me,' which sounds accusatory, we can say, 'I feel frustrated when I'm interrupted because I lose my train of thought.' This focuses on your feelings and the impact, not on blaming. Can someone give an example of an 'I' statement they might use?"

(Encourage students to practice formulating 'I' statements.)

(Display Slide 8: Strategy 3: Choose Your Moment)

Teacher: "Strategy three is about Choosing Your Moment. Trying to have a serious conversation when someone is rushed, stressed, or in a public place is usually not effective. It's important to find a private, neutral space and ensure both parties are calm and ready to talk. Setting a positive intention, like 'I want to understand and find a solution,' also helps."

(Display Slide 9: Strategy 4: Focus on Solutions)

Teacher: "Finally, Focus on Solutions. Once you've listened actively and expressed your feelings, the goal is to work together to find a solution. Brainstorm ideas, look for common ground, and be willing to compromise. It's not about 'winning' the argument, but finding a 'win-win' where everyone feels heard and respected."

Practice and Reflection (15 minutes)

Teacher: "Now let's put some of these ideas into practice. We're going to do a quick scenario activity. Imagine you're working on a group project, and one of your teammates isn't pulling their weight, making you worried about the deadline. How might you approach this 'tough talk' using the strategies we just discussed?"

(Divide students into small groups or pairs for a brief role-play. Provide them with the scenario and encourage them to use active listening and 'I' statements.)

Teacher: "Alright, let's bring it back together. What did you learn from that quick practice? Was it easy or challenging to use the 'I' statements or actively listen?"

(Facilitate a brief discussion on the challenges and successes of practicing the strategies.)

Teacher: "To help you continue reflecting on these important skills, I'm handing out a Conflict Resolution Reflection Prompts Journal. You can start on the first prompt now, and keep it to use whenever you encounter a situation where these skills might be helpful."

(Distribute the journal and allow 5-7 minutes for students to begin writing.)

Wrap-Up: Key Takeaways (5 minutes)

Teacher: "As we wrap up today, let's quickly review the core ideas. What are one or two key strategies you'll try to remember when you need to navigate a tough talk?"

(Display Slide 10: Recap: Navigating Tough Talks)

Teacher: "Remember, practice makes perfect. The more you consciously apply active listening, 'I' statements, choosing your moment, and focusing on solutions, the more natural and effective your professional communication will become. Keep using your Conflict Resolution Reflection Prompts Journal to reflect on your experiences."

Teacher: "Thank you for your active participation today! I hope you feel more equipped to handle tough talks with confidence and respect."

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Why Do Leaves Change? • Lenny Learning