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Session 2: Ozobot Coding 🤖

Overview

Grades: 3-4 | Duration: 40 minutes | Session: 2 of 17

Students discover Ozobot robots and learn to program them using color codes and OzoBlockly.

Session 2: Ozobot Coding

Learning Objectives

By the end of this session, students will:

  • Understand how Ozobot follows lines and reads color codes

  • Program Ozobot using color code commands

  • Create simple OzoBlockly programs

  • Debug programs that don't work

Session 2: Ozobot Coding

Materials Needed

  • 🤖 Ozobot robots (from CSCOE library)

  • 🖊️ Thick markers (black, red, blue, green)

  • 📄 White paper for tracks

  • 💻 Devices for OzoBlockly (optional)

  • 📓 Engineering journals

Catholic Integration

Saint Connection

Blessed Carlo Acutis — Young tech enthusiast who used his skills for God's glory!

Scripture

"Direct my footsteps according to your word." — Psalm 119:133

Opening Prayer

Dear God, you guide our paths. As we program robots to follow lines, help us remember to follow your way. Thank you for technology and creativity. Amen.

Lesson Procedure

Opening Circle (5 minutes)

  1. Meet Ozobot:
  2. "Tiny robot that follows lines and reads colors!"
  3. Has sensors on bottom to detect colors
  4. No remote needed—it thinks!
  5. How It Works:
  6. Follows black lines
  7. Color codes give commands
  8. Different color patterns = different actions
  9. Blessed Carlo — Used tech to spread faith!

Main Activity: Ozobot Exploration (27 minutes)

Part 1: Line Following (7 minutes)

  • Draw black line on white paper

  • Place Ozobot on line—watch it go!

  • Try:

  • Straight lines
  • Curves

  • Intersections (what happens?)

  • Key: Lines must be thick enough!

Part 2: Color Codes (10 minutes)

Introduction to OzoCodes:

  • Specific color patterns give commands

  • Must be drawn in correct order

  • Reference card shows all codes

Essential Codes to Try:

  • 🔴⬛🔴⬛ (Red-Black-Red-Black) = U-Turn

  • 🔵🟢🔵 (Blue-Green-Blue) = Spin

  • 🔴🔵🔴 (Red-Blue-Red) = Speed up (Turbo)

  • 🟢⬛🟢 (Green-Black-Green) = Slow down

  • 🔵🔴🔵 (Blue-Red-Blue) = Turn around

Practice:

  • Add codes to your track

  • Test each one

  • Create track with multiple commands

Part 3: Course Design (8 minutes)

  • Design a complete Ozobot course

  • Include:

  • Start point
  • At least 3 turns
  • At least 2 color codes

  • End point

  • Test and refine!

Part 4: Course Share (2 minutes)

  • Try a classmate's course

  • Share successes and challenges

Engineering Journal (5 minutes)

  1. Draw an Ozobot on a line
  2. Write/draw 3 color codes you learned
  3. Draw your course design
  4. Write: "Debugging means..."

Closing Circle (3 minutes)

  1. Discovery Share — "What surprised you about Ozobot?"
  2. Following Paths — "How do WE follow God's path?"
  3. Closing Prayer — "Thank you, God, for guiding us. Help us follow your way. Amen."

Assessment

Observation Checklist:

  • Understood line-following concept

  • Successfully used color codes

  • Created working course

  • Debugged problems

Differentiation

For Students Who Need Support

  • Pre-drawn line templates

  • Focus on basic codes

  • Partner work

For Advanced Students

  • OzoBlockly programming

  • Complex course design

  • Create challenges for others

Wonder at Home 🏠

Family Activity: Ozobot has free resources at ozobot.com! Print color code sheets and practice at home if you have markers. Think about how robots "see" and "decide"—it's all programming!

Teacher Notes

  • Reserve Ozobots from CSCOE library

  • Ensure thick black markers (fine lines won't work)

  • Charge Ozobots fully before class

  • OzoBlockly adds block coding if devices available

Previous: Session 1 — Design Thinking
Next: Session 3 — Tower Challenge