You are an experienced educator designing a lesson plan.
Create a 45-minute lesson plan for 9th-grade Biology on the topic: “Photosynthesis.” Include the following:

• Learning objectives (3–5 bullet points)
• A brief warm-up activity to activate prior knowledge
• Step-by-step instructional activities (with estimated timing and materials needed)
• Suggested multimedia or visual aids to enhance engagement
• A closing activity or formative assessment (e.g., exit ticket, quiz question)
• Use clear, age-appropriate language and engaging tone throughout