Energy Flow Start

Overview

Unit: Energy Flow in Ecosystems (Lesson 1 of 6)
Grade: 7th Grade
Time: 40 minutes
Class Size: 20 students

Standards Alignment

This lesson is carefully aligned with the Next Generation Science Standards (NGSS) applicable to 7th grade, which complement Common Core literacy skills:

• MS-LS1-6: Construct a scientific explanation based on evidence for the role of photosynthesis in the cycling of matter and flow of energy into and out of organisms.
• CCSS.ELA-LITERACY.RST.6-8.3: Follow precisely a multistep procedure when carrying out experiments, taking measurements, or performing technical tasks.
• CCSS.ELA-LITERACY.SL.7.1: Engage effectively in a range of collaborative discussions with diverse partners on grade 7 topics and texts.
• CCSS.ELA-LITERACY.RI.7.7: Compare and contrast a text to an audio, video, or multimedia version of the text.

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Learning Objectives

• I can explain the process of photosynthesis.
• I can identify the reactants and products of photosynthesis.
• I can label a diagram of photosynthesis and describe the role of sunlight, carbon dioxide, and water in this process.

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Success Criteria

• Accurately labels a photosynthesis diagram with reactants and products using color coding.
• Verbally explains the photosynthesis process, naming sunlight, carbon dioxide, and water.
• Participates effectively in hands-on activities and group discussions.

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Materials Needed

• Large printed diagrams of the photosynthesis cycle (color-coded)
• Model kits or manipulatives representing sunlight, CO2, H2O, glucose, oxygen (e.g., colored balls or cards)
• Whiteboard and markers
• Audio recording of the lesson text (for dyslexia-friendly support)
• Graphic organizers with simplified text summaries (visual aids)
• Projector or smartboard (optional) for displaying diagrams
• Headphones (for individual audio support)

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Lesson Activities

1. Introduction and Hook (5 minutes)

• Begin with a simple question: “Where does a plant get its energy from?”
• Briefly discuss answers, introducing sunlight as the energy source.
• Show a colorful, simplified diagram of photosynthesis. Use hand gestures to emphasize “energy in” and “energy out.”
• Play a 1-minute engaging audio recording describing photosynthesis (Dyslexia-friendly option).

Teacher Tip: For Spanish-speaking students, provide a bilingual graphic organizer with key vocabulary in English and Spanish (e.g., “sunlight / luz solar”).

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2. Direct Instruction & Vocabulary (10 minutes)

• Introduce key terms: photosynthesis, reactants (sunlight, carbon dioxide, water), products (glucose, oxygen).
• Model with physical pieces: place "sunlight," "CO2," and "H2O" models on one side of the board, “glucose” and “O2” on the other side.
• Explain how plants convert light energy into chemical energy (glucose).
• Use color-coding on the diagram: reactants in blue, products in green to aid memory and support dyslexia-friendly learning.

Differentiation:

• For ELL and struggling readers, display simplified text alongside the diagram.
• Kinesthetic learners handle the physical models to “build” the photosynthesis process themselves.
• Gifted learners get deeper questions: “How might photosynthesis change in desert plants?” (prepares for extension).

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3. Hands-On Activity: Model Photosynthesis (15 minutes)

• Divide class into small groups (4-5 students each).
• Each group receives a photosynthesis kit (models of sunlight, CO2, H2O, glucose, and oxygen).
• Task: Use the models to assemble the cycle of photosynthesis on a board or workspace. Label each item correctly.
• Circulate to ask guiding questions such as:
  “What happens if the plant has no water?”
  “Which part represents energy from the sun?”
• Groups share their assembled models with the class, explaining the process verbally to reinforce learning and speaking skills.

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4. Formative Assessment & Wrap-Up (8 minutes)

• Each student receives a blank diagram to label individually.
• Provide colored pencils matching the color code used earlier.
• Ask students to write one sentence explaining why sunlight is essential for photosynthesis.
• Peer-share: Pair students briefly (1–2 minutes) to explain their diagrams to one another, practicing oral skills.

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Differentiation Strategies

• Audio recording and color-coded visuals to support dyslexia and ELL learners.
• Hands-on manipulatives for kinesthetic engagement and behavioral focus.
• Simplified reading materials with bilingual vocab for Spanish speakers.
• Higher-order questioning and research prompts for gifted learners.
• Small group work to provide social and academic support for students with IEPs or behavioral needs.

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Extension Activity (Optional Homework or Enrichment)

• Research different types of plants (e.g., desert succulents, aquatic plants) and describe unique photosynthesis adaptations.
• Present findings via poster or short oral presentation in the next class.

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Reflection and Teacher Notes

• Monitor group interactions and adjust grouping if behavior challenges arise.
• Check for student understanding via labeled diagrams and oral explanations.
• Use formative assessment to plan next lessons focusing on energy flow consequences (lesson 2).
• Encourage use of audio and visual supports continuously to build student confidence.

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This detailed plan aligns hands-on, visual, auditory, and speaking elements with NGSS and Common Core standards to engage diverse learners in understanding the foundational concept of photosynthesis.