Use the intructional video to guide your students through the Introduction to Color Codes activity. Alternatively, continue with the direct instructions below.

Explain to students that they will build on what they've learned about Ozobot's line and color sensors to communicate commands to their Ozobot with Color Codes!

If needed, review that Ozobot's line-following sensors are under the bot towards the front, and the color sensor is located between the wheels. Explain to students that under Ozobot, between the wheels, there is an optical sensor that detects colors.

Display the Color Code Reference Sheet. Explain that Color Codes are a language Ozobot understands made up of sequences of colors. Ozobot knows that when it reads a certain color sequence, you want it to do something. Using Color Codes, you can tell your Ozobot to: change speed, change direction, perform cool moves, and more.

Have students take out their Page 1 activity sheet. Tell students they can place their bot anywhere on the black line. Watch the bot as it travels over each Color Code. Ask students to identify and label what they think each Color Code means based on their bot's response.

Now, students will practice drawing Color Codes! Show them how to copy the two Color Codes on Page 2. Share some helpful hints:

• Ozobot can only read Color Codes drawn between black lines (unless it is a special "line end" code)
• Ensure that your color boxes within the Color Code are about 1/4" squares
• Don't overlap colors
• Don't leave white space between colors
• Don't make the colors too dark
• Don't draw lines on curves or too close to intersections.

Introduce the concept of symmetric and asymmetric Color Codes. Explain that some of Ozobot’s Color Codes are the same either way Ozobot reads them. These are called "Symmetric" Codes. They are the same forward and backward.

However, some of Ozobot’s Color Codes are asymmetric— the colors are in a different order depending on the direction Ozobot travels over the code. This means Ozobot will have a different response, depending on which way Ozobot reads the color sequence! Guide students to complete page 3, and discuss which codes are symmetric and which are asymmetric.

Guide students through completing page 4. Assist them in completing their Color Codes. If they have trouble, remind them to:

• Use black marker before and after the Color Code (unless it is a special "line end" code)
• Ensure that your colors are all the same length
• Not overlap colors
• Not leave white space between colors
• Not make the colors too dark
• Not draw lines on curves or too close to intersections.

Guide students through completing page 5. If needed, show students how to draw the Color Codes and shapes on another paper to test if they will work.

Wrap up the lesson, and explain to students that they will be learning about the Ozobot's directionality in the next lesson.