---

Overview

This 5-day unit introduces 7th-grade students to the scientific investigation of the diversity of living organisms. They will learn to obtain, evaluate, and communicate information about organisms and develop models categorizing organisms based on shared characteristics. Lessons are designed to actively engage 20 students, aligning specifically with the Georgia Standards of Excellence (S7L1, S7L1.a) which complement Common Core literacy standards by focusing on analyzing and communicating scientific information.

---

Day 1: Introduction to Biodiversity and Scientific Inquiry

Duration: 65 minutes

Learning Target

I can explain what biodiversity means and describe how scientists categorize living organisms based on characteristics.

Success Criteria

• Define biodiversity accurately.
• Identify at least three different groups of organisms.
• Collaborate to classify simple living things based on physical characteristics.

Common Core & Science Standards Alignment

• S7L1: Obtain, evaluate, and communicate information to investigate the diversity of living organisms and how they can be compared scientifically.
• S7L1.a: Develop and defend a model that categorizes organisms based on common characteristics.

Materials

• Chart paper & markers
• Pictures of diverse organisms (plants, animals, fungi, bacteria)
• Graphic organizer template (classification chart)

Lesson Activities

1. Warm-up (10 minutes):

   • Show a short video or slideshow illustrating biodiversity worldwide.
   • Facilitate a think-pair-share: “What kinds of living things did you notice? How are they different or alike?”

2. Direct Instruction (15 minutes):

   • Define biodiversity and introduce scientific classification as a process.
   • Explain classifications using examples: Kingdoms and grouping by common features.

3. Group Activity (25 minutes):

   • Divide students into 4 groups of 5.
   • Provide organism pictures and a graphic organizer with columns for “Physical Traits” and “Group Name.”
   • Task: Develop a preliminary model to categorize organisms based on observable traits.
   • Encourage using simple categories like “Has leaves,” “Moves,” or “Has fur.”

4. Class Discussion & Communication (10 minutes):

   • Groups present their classification models and rationale.
   • Teacher prompts students to compare and critique models respectfully.

Exit Ticket (5 minutes)

• Write one thing learned about biodiversity and one question about classification.

Assessment

Informal observation during group work and presentations.

Remediation

• One-on-one or small group conference to review classification examples with teacher using additional visuals.

Enrichment

• Challenge students to find 3 examples of organisms at home or outside and describe their characteristics.

Acceleration

• Introduce Linnaean taxonomy terms and have students attempt more precise categories with correct vocabulary.

---

Day 2: Characteristics of Living Organisms & Scientific Inquiry

Duration: 65 minutes

Learning Target

I can identify characteristics used to scientifically compare and categorize living organisms.

Success Criteria

• List at least five common characteristics (e.g., cell type, ability to move, reproduction).
• Use characteristics to sort organisms scientifically.

Materials

• Organism cards with scientific and common names
• Chart paper for characteristics list
• “Characteristics Sorting” worksheet

Lesson Activities

1. Warm-up (10 minutes):

   • Brainstorm and record on chart paper “What makes something alive?”
   • Discuss the characteristics shared by all living things.

2. Direct Instruction (10 minutes):

   • Present and explain key characteristics used by biologists to group organisms: cell type (prokaryote/eukaryote), reproduction method, nutritional method, movement.

3. Sorting Activity (30 minutes):

   • Students work with partner to use organism cards and sort into groups using the devised characteristics on worksheet.
   • Encourage justification for each group created.

4. Class Sharing (10 minutes):

   • Share and explain sorting decisions; teacher connects these groupings to formal scientific categories.

Exit Ticket (5 minutes)

• Write down two characteristics that scientists use to classify organisms.

Assessment

Partner worksheet checked for understanding of sorting rationale.

Remediation

Provide guided sorting examples with scaffolded questions.

Enrichment

Research a specific organism and report unique characteristics.

Acceleration

Introduce microscopes to observe simple organisms and document traits.

---

Day 3: Developing Models to Categorize Organisms

Duration: 65 minutes

Learning Target

I can develop and defend a model that categorizes organisms based on common characteristics.

Success Criteria

• Construct a model (diagram/chart) grouping organisms scientifically.
• Present and defend organizational choices using evidence.

Materials

• Poster boards, markers, glue, scissors
• Organism fact sheets with detailed information (habitat, physical traits, reproduction)

Lesson Activities

1. Warm-up (5 minutes):

   • Review previous lessons' key classification characteristics.

2. Model Construction (40 minutes):

   • Students work in groups to create detailed posters that model classification based on organism fact sheets.
   • Must include categories, characteristics, and at least 10 organisms.

3. Gallery Walk (15 minutes):

   • Groups display posters; students walk around and take notes on differences/similarities.
   • Each group gives a 3-minute defense of their model to peers.

4. Reflection (5 minutes):

   • Quick-write: What was the biggest challenge in categorizing organisms today?

Exit Ticket (5 minutes)

• Write one strength and one area for improvement about your group’s model.

Assessment

Teacher rubric covering accuracy, use of characteristics, and communication clarity.

Remediation

Teacher-led small groups to redesign models using simpler traits.

Enrichment

Research additional classification levels (e.g., genus, species).

Acceleration

Challenge students to integrate evolutionary relationships into their models.

---

Day 4: Scientific Communication & Comparison of Organisms

Duration: 65 minutes

Learning Target

I can obtain, evaluate, and communicate scientific information about organisms and their relationships.

Success Criteria

• Analyze data to compare organisms.
• Communicate findings using proper scientific language.

Materials

• Sample data charts comparing traits of organisms
• Writing templates for scientific reports
• Computers/tablets for research

Lesson Activities

1. Warm-up (10 minutes):

   • Review scientific vocabulary related to classification.

2. Data Analysis (20 minutes):

   • Present sample data comparing organisms’ features.
   • Students work in pairs to interpret and draw conclusions.

3. Writing Task (25 minutes):

   • Students write a short scientific report addressing:
     • Organisms studied
     • Similarities and differences
     • Which classification would best fit these organisms and why

4. Peer Review (10 minutes):

   • Pairs exchange reports and give constructive feedback focusing on clarity and correctness.

Exit Ticket (5 minutes)

• Write one new fact you learned today about how scientists compare organisms.

Assessment

Evaluate written reports for scientific accuracy and clarity following a rubric.

Remediation

Provide sentence starters and vocabulary banks to support writing.

Enrichment

Create a short presentation or poster summarizing findings.

Acceleration

Include creating and interpreting evolutionary trees (cladograms) related to organisms.

---

Day 5: Unit Assessment and Review

Duration: 65 minutes

Learning Target

I can demonstrate my understanding of organism diversity and classification models through a formal assessment.

Success Criteria

• Correctly answer multiple-choice and short-answer questions about biodiversity and classification.
• Apply concepts to classify new organisms accurately.

Materials

• Unit test packet (multiple choice, short answer, model-building)
• Review game materials (e.g., Kahoot, Jeopardy style questions)

Lesson Activities

1. Warm-up Review Game (15 minutes):

   • Interactive quiz/game to refresh concepts learned all week.

2. Unit Assessment (40 minutes):

   • Students individually complete the unit test covering:
     • Definitions of biodiversity and characteristics
     • Grouping organisms by traits
     • Constructing/defending classification models

3. Exit Ticket (10 minutes):

   • Reflection question: How can learning to classify organisms help scientists and people in everyday life?

Assessment

Formal unit test graded with rubric aligned to S7L1 and S7L1.a.

Remediation

Review test results with students; plan individualized mini-lessons or tutoring on weaker areas.

Enrichment

Encourage interested students to create a multimedia project or presentation on a specific organism’s classification journey.

Acceleration

Introduce genetics as a modern method for classification and invite students to explore related articles or videos.

---

Summary

This unit empowers 7th graders to investigate living organisms scientifically, develop their own classification models, and effectively communicate findings. The lesson sequence progresses carefully through inquiry, model construction, communication, and assessment, ensuring students meet S7L1 and S7L1.a standards while engaging deeply with core scientific skills and literacy practices.