Detective Dot and the Safe Computer Secret

Materials Needed

• Paper or index cards
• Crayons or washable markers
• A toy keyboard, real keyboard, or paper keyboard
• Three signs: SAFE, STOP, and ASK A GROWN-UP
• A small box or envelope labeled “Secret Computer Messages”
• Optional: computer or tablet for a supervised demonstration

Learning Objectives

By the end of the lesson, the child will be able to:

• Explain that computers follow instructions.
• Sort simple computer messages into “safe” and “ask a grown-up.”
• Practice stopping before typing or clicking something unfamiliar.
• State the safety rule: “If I am not sure, I stop and ask a grown-up.”

Success Criteria

The learner is successful when they can:

• Tell who may help them use a computer safely.
• Use the words “stop” and “ask” when they see something unfamiliar.
• Correctly sort at least four out of five example cards.
• Show the safe action during a pretend computer game.

Introduction: Meet Detective Dot

Teacher/parent says: “Today we are computer detectives! Computers are very helpful, but they need clear instructions. We will learn what to do when a computer message looks strange or confusing.”

Show the child the toy or paper keyboard.

Ask:

• “What can a computer do?”
• “Who helps you use a computer?”
• “What should we do if we see something we do not understand?”

Introduce the lesson rule with motions:

• Stop: Hold up one hand.
• Look: Point to your eyes.
• Ask: Pretend to raise your hand.

Say together: “Stop, look, and ask!”

Body of the Lesson

Part 1: I Do—Computers Follow Instructions

Place three simple cards in front of the child:

• “Play music.”
• “Show a picture.”
• “Turn off the light.”

Explain: “A computer follows instructions, just like we follow directions. If we give a clear instruction, the computer knows what to do.”

Use the toy keyboard or act out typing a simple instruction. Then show a card with scribbles, pretend symbols, or a message the child cannot understand.

Say: “This message is confusing. I do not know what it means. I will not press buttons by myself. I will stop and ask a grown-up.”

Quick Check: Ask, “Should I guess, or should I ask?” Have the child point to the ASK A GROWN-UP sign.

Part 2: We Do—Safe or Ask?

Explain that some actions are familiar and some need adult help. Read each example aloud. The child places the card under SAFE or ASK A GROWN-UP.

1. “Press play on the story your grown-up chose.” Safe
2. “A strange box appears and asks you to type something.” Ask a grown-up
3. “Use the drawing app with your grown-up nearby.” Safe
4. “A message says, ‘Click here!’ but you do not know who sent it.” Ask a grown-up
5. “Use your learning game in the way your grown-up showed you.” Safe

After each card, ask:

• “What makes this safe or uncertain?”
• “What should Detective Dot do next?”

Give specific feedback:

“You noticed that the message was unfamiliar. You remembered to stop and ask. That is safe computer thinking.”

Part 3: You Do—The Stop, Look, and Ask Game

Place the three signs around the room. Read one pretend computer situation at a time. The child walks, skips, or hops to the sign showing the best choice.

• “Your grown-up says it is time to play your favorite game.” SAFE
• “The computer asks for something you do not understand.” ASK A GROWN-UP
• “You see a button you have never seen before.” STOP
• “Your grown-up explains what the button does.” SAFE
• “Someone you do not know asks you to type a secret.” STOP and ASK A GROWN-UP

Encourage the child to say the complete safety sentence each time:

“I do not know. I will stop and ask a grown-up.”

Part 4: Hands-On Activity—Make a Computer Safety Badge

Invite the child to create a badge or sign that says:

STOP, LOOK, ASK!

The child may draw:

• A stop hand
• A pair of eyes
• A friendly grown-up
• A computer with a happy face

Offer a choice:

• Make a paper badge.
• Decorate a “safe computer” sign.
• Act out the rule with puppets or stuffed animals.

Optional Real-World Demonstration

With a grown-up beside the child, open a familiar, child-safe activity. Point out that the child should only use approved apps and buttons.

Then show a pretend unfamiliar message without clicking it.

Ask the child to demonstrate:

1. Move hands away from the keyboard.
2. Say, “Stop.”
3. Find the grown-up.
4. Ask, “What is this?”

Formative Assessment

During the lesson, observe whether the child can:

• Recognize a familiar activity.
• Notice when a message or button is unfamiliar.
• Choose to stop instead of guessing.
• Ask a trusted grown-up for help.

Use simple questions:

• “What do you do before clicking something new?”
• “Who can help you?”
• “Should you type a secret for someone you do not know?”

Summative Assessment: Detective Dot Challenge

Present five new pretend situations. Ask the child to show or say what they would do.

1. A grown-up opens your favorite story. Safe to use with permission.
2. A strange message appears. Stop and ask.
3. A new button appears. Do not press it alone; ask.
4. Your grown-up explains a button and says it is okay. Use it with permission.
5. An unknown person asks for information. Stop and tell a grown-up.

Mastery goal: The child correctly responds to at least four situations and says the safety rule without help.

Differentiation and Adaptations

For a Child Who Needs More Support

• Use only two choices: SAFE and ASK.
• Use picture cards instead of written cards.
• Repeat the same sentence: “Stop and ask a grown-up.”
• Model each response before asking the child to try.
• Use hand motions for stop, look, and ask.

For a Child Ready for More Challenge

• Ask the child to invent a safe and an unsafe computer situation.
• Have the child explain why a situation needs adult help.
• Create a short puppet show about a computer detective.
• Sort actions into three groups: safe, stop, and ask.

For Different Learning Settings

• Homeschool: Use the family computer and make a safety badge for the learning area.
• Classroom: Let children act out the signs in small groups.
• Training setting: Replace the computer examples with age-appropriate device or tablet examples.
• Digital option: Use a video call, digital drawing tool, or interactive slide deck with adult supervision.

Conclusion and Recap

Invite the child to hold up the safety badge and finish these sentences:

• “Computers follow __________.” Instructions.
• “If I see something strange, I __________.” Stop.
• “When I am not sure, I ask a __________.” Grown-up.

Finish with the class or family chant:

“Stop, look, and ask. Safe computer choices are our task!”

Ask the child to name one safe computer choice they will make today.

Key Takeaway

When something on a computer is unfamiliar, do not guess or click. Stop, look, and ask a trusted grown-up.