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शिक्षाby Grow10x
A electric quiz board style build, as students make in Class 4
Class 4 · Junior

Ask & check.Electric Quiz Board

Asking clear questions, checking answers, first Scratch blocks, simple circuits and signals. Showcase build: an electric quiz board whose questions the class checked against the textbook, lighting up for every right match.

See all 16 projectsPlan Class 4
  • 16 projects8 robotics, 4 AI, 4 integrated
  • 20 to 80Sessions by plan
  • Scratch blocksMain language
  • Human in the loopAI to hardware
Class 4 at a glance

What students do, and what they prove.

Showcase build04

Electric Quiz Board

An electric quiz board whose questions the class checked against the textbook, lighting up for every right match.

Learning check. Build a working quiz-board circuit, write a clear question and check an AI answer against the textbook.

Individual check. Every learner, on their own: “Find the page that proves the answer.”

Entry task

Follow a three-step instruction, continue a pattern and point to the switch in a simple circuit.

Robotics core

Home-made switches, buzzers and codes, conductors, guarded motors and simple pulleys.

AI layer

Clear questions, learning by example, checking AI answers against the textbook and sound as data.

Code & tools

Unplugged algorithms, then first Scratch blocks. Scratch app, Teachable Machine (teacher-led), Quiz board kit.

Cross-subject link

Reading for evidence, sequences, measuring and comparing results.

Scaffolding

Pre-wired modules, insulated clips, sentence starters and pair work. Teachers handle all cutting.

How AI meets hardware here

Human in the loop. The teacher runs any AI tool and children check every answer before it is used.

Class 4 project sequence

Sixteen projects, four blocks of twenty sessions.

Each block follows the same pattern: two builds, one AI project, then one integrated project. Open any project to see its five sessions.

  • RRobotics
  • AAI
  • IIntegrated
Block 1Sessions 01-20In every plan, from Discovery (3 months)

  1. 01
    Ask & understand · Week 1
    What does a switch do?
  2. 02
    Build & design · Week 1
    Make a paper-clip switch
  3. 03
    Implement · Week 2
    Connect the switch to the light
  4. 04
    Test & improve · Week 2
    Find and fix a fault
  5. 05
    Explain & reflect · Week 3
    Explain open and closed circuits
Materials

Pre-wired LED module, enclosed AA battery holder, card, paper clip, insulated clips

Minimum test

Five on-and-off trials; one fault found and fixed.

Hands-on build

A physical circuit, sensor or mechanism, built and tested on the bench.

Open the project page

  1. 06
    Ask & understand · Week 3
    How can sound carry a message?
  2. 07
    Build & design · Week 4
    Make a short-and-long code card
  3. 08
    Implement · Week 4
    Build the buzzer tapper
  4. 09
    Test & improve · Week 5
    Send words and check them
  5. 10
    Explain & reflect · Week 5
    Explain the code as a set of rules
Materials

Pre-wired buzzer module, push button, enclosed AA battery holder, code card

Minimum test

Three short words sent and decoded by a partner.

Hands-on build

A physical circuit, sensor or mechanism, built and tested on the bench.

Open the project page

  1. 11
    Ask & understand · Week 6
    How do machines learn from examples?
  2. 12
    Build & design · Week 6
    Choose and label example pictures
  3. 13
    Implement · Week 7
    Watch the teacher train the model
  4. 14
    Test & improve · Week 7
    Test ten new pictures
  5. 15
    Explain & reflect · Week 8
    Explain one mistake the model made
Materials

Teacher computer, Teachable Machine, object picture cards

Minimum test

Ten new pictures; right, wrong and not sure counted.

AI project

A model, an evaluation study or an AI-checking workflow.

Open the project page

  1. 16
    Ask & understand · Week 8
    Can a machine help us sort waste?
  2. 17
    Build & design · Week 9
    Sort the packaging pictures by hand first
  3. 18
    Implement · Week 9
    Use the model's suggestion with a check
  4. 19
    Test & improve · Week 10
    Test confusing packaging
  5. 20
    Explain & reflect · Week 10
    Explain who makes the final choice
Materials

Teacher computer, packaging pictures, two-light switch board

Minimum test

Ten cards; disputed cards go to an 'ask an adult' tray.

Human in the loop

The AI suggests. A person checks and operates the hardware.

Open the project page
Block 2Sessions 21-40From the Builder plan (6 months)

  1. 21
    Ask & understand · Week 11
    How can a circuit check an answer?
  2. 22
    Build & design · Week 11
    Plan the questions and the hidden foil paths
  3. 23
    Implement · Week 12
    Build the two-question board
  4. 24
    Test & improve · Week 12
    Test the right and wrong pairs
  5. 25
    Explain & reflect · Week 13
    Explain how the hidden path works
Materials

Card board, foil strips, insulated wires, LED module, enclosed AA battery holder

Minimum test

Each right pair lights and each wrong pair stays dark, checked five times.

Hands-on build

A physical circuit, sensor or mechanism, built and tested on the bench.

Open the project page

  1. 26
    Ask & understand · Week 13
    How can air push a buggy?
  2. 27
    Build & design · Week 14
    Plan the buggy body and wheels
  3. 28
    Implement · Week 14
    Fit the guarded fan and switch
  4. 29
    Test & improve · Week 15
    Measure three runs on a lane
  5. 30
    Explain & reflect · Week 15
    Explain one change that helped
Materials

Low-current motor with guarded fan, enclosed AA battery holder with switch, cardboard, wheels

Minimum test

Three runs on a flat lane; power off before every adjustment.

Hands-on build

A physical circuit, sensor or mechanism, built and tested on the bench.

Open the project page

  1. 31
    Ask & understand · Week 16
    What makes a question clear?
  2. 32
    Build & design · Week 16
    Climb the question ladder
  3. 33
    Implement · Week 17
    Compare answers to vague and clear questions
  4. 34
    Test & improve · Week 17
    Check the answers in the textbook
  5. 35
    Explain & reflect · Week 18
    Explain which question worked better and why
Materials

Question ladder sheet, teacher-run AI tool, printed answers

Minimum test

Three questions improved; answers compared before and after.

AI project

A model, an evaluation study or an AI-checking workflow.

Open the project page

  1. 36
    Ask & understand · Week 18
    How do we know an answer is true?
  2. 37
    Build & design · Week 19
    Find the textbook pages
  3. 38
    Implement · Week 19
    Check each answer and choose a light
  4. 39
    Test & improve · Week 20
    Catch an answer that sounds right but is not
  5. 40
    Explain & reflect · Week 20
    Explain the Check-It rule
Materials

Teacher-run AI tool, printed answers, textbook pages, two-light switch board

Minimum test

Six answers checked; every green light has a page number.

Human in the loop

The AI suggests. A person checks and operates the hardware.

Open the project page
Block 3Sessions 41-60Innovation plan (12 months)

  1. 41
    Ask & understand · Week 21
    How do lifts and cranes raise things?
  2. 42
    Build & design · Week 21
    Build the frame and the pulley
  3. 43
    Implement · Week 22
    Fit the crank and the basket
  4. 44
    Test & improve · Week 22
    Lift loads and count the turns
  5. 45
    Explain & reflect · Week 23
    Explain how the pulley helps
Materials

Cardboard frame, cotton reel, string, small basket, light loads

Minimum test

Three light loads lifted; turns counted each time.

Hands-on mechanism

A physical build that moves with no electricity at all.

Open the project page

  1. 46
    Ask & understand · Week 23
    What changes when a motor does the work?
  2. 47
    Build & design · Week 24
    Plan where the motor fits
  3. 48
    Implement · Week 24
    Fit the guarded motor and switch
  4. 49
    Test & improve · Week 25
    Test lifting and stopping
  5. 50
    Explain & reflect · Week 25
    Explain why a stop switch matters
Materials

P09 lift, low-current geared motor with guard, enclosed AA battery holder with switch

Minimum test

Five lifts; the switch stops the lift every time.

Hands-on build

A physical circuit, sensor or mechanism, built and tested on the bench.

Open the project page

  1. 51
    Ask & understand · Week 26
    What makes animal sounds different?
  2. 52
    Build & design · Week 26
    Choose labelled animal sound clips
  3. 53
    Implement · Week 27
    Watch the teacher train a sound model
  4. 54
    Test & improve · Week 27
    Test new clips and count the mistakes
  5. 55
    Explain & reflect · Week 28
    Explain what confused the model
Materials

Teacher computer, Teachable Machine, recorded animal sounds (no human voices)

Minimum test

Ten new clips; right, wrong and not sure counted.

AI project

A model, an evaluation study or an AI-checking workflow.

Open the project page

  1. 56
    Ask & understand · Week 28
    Can a machine tell animals apart by sound?
  2. 57
    Build & design · Week 29
    Match each light to an animal picture
  3. 58
    Implement · Week 29
    Use the model's suggestion with a check
  4. 59
    Test & improve · Week 30
    Test clips with background noise
  5. 60
    Explain & reflect · Week 30
    Explain why the model got one wrong
Materials

Teacher computer, recorded animal sound clips, picture board with lights and switches

Minimum test

Ten clips; unclear sounds go to 'listen again', never straight to a light.

Human in the loop

The AI suggests. A person checks and operates the hardware.

Open the project page
Block 4Sessions 61-80Innovation plan (12 months)

  1. 61
    Ask & understand · Week 31
    Plan six questions and answers
  2. 62
    Build & design · Week 31
    Lay the hidden foil paths
  3. 63
    Implement · Week 32
    Connect the light and the buzzer
  4. 64
    Test & improve · Week 32
    Test all right and wrong pairs
  5. 65
    Explain & reflect · Week 33
    Draw the wiring map
Materials

Large card board, foil strips, insulated wires, LED and buzzer modules, enclosed AA battery holder

Minimum test

Every right pair lights and buzzes; every wrong pair stays silent.

Hands-on build

A physical circuit, sensor or mechanism, built and tested on the bench.

Open the project page

  1. 66
    Ask & understand · Week 33
    Can spinning make electricity?
  2. 67
    Build & design · Week 34
    Fit the card blades to the motor
  3. 68
    Implement · Week 34
    Connect the light to the motor
  4. 69
    Test & improve · Week 35
    Compare slow and fast spins
  5. 70
    Explain & reflect · Week 35
    Explain where the energy came from
Materials

Small motor used as a generator, card blades, LED module, base

Minimum test

Slow, medium and fast spins compared; record when the light glows.

Hands-on build

A physical circuit, sensor or mechanism, built and tested on the bench.

Open the project page

  1. 71
    Ask & understand · Week 36
    Can an AI tool write good quiz questions?
  2. 72
    Build & design · Week 36
    Read the questions the teacher's tool drafted
  3. 73
    Implement · Week 37
    Check each one against the textbook
  4. 74
    Test & improve · Week 37
    Fix wrong or unclear questions
  5. 75
    Explain & reflect · Week 38
    Explain one fix you made
Materials

Questions printed from a teacher-run AI tool, textbook, checking sheet

Minimum test

Ten drafted questions checked; every error corrected with a page number.

AI project

A model, an evaluation study or an AI-checking workflow.

Open the project page

  1. 76
    Ask & understand · Week 38
    Plan the final quiz topic
  2. 77
    Build & design · Week 39
    Load the checked questions onto the board
  3. 78
    Implement · Week 39
    Wire the final answer paths
  4. 79
    Test & improve · Week 40
    Run the quiz with another team
  5. 80
    Explain & reflect · Week 40
    Present the board and explain who checked what
Materials

P13 quiz board, P15 checked questions, teacher-run AI tool, textbook

Minimum test

Twelve pairs tested; no question is used until its answer has a page number.

Human in the loop

The AI suggests. A person checks and operates the hardware.

Open the project page
How thinking grows

Class 4 adds one more layer of judgement.

Hardware thinking

Switches, conductors and signals

AI & data thinking

Clear questions and checked answers

Programming depth

Step cards to first Scratch blocks

Reusable skill

A question card: ask clearly, check the book.

Tool and permission habit

A tool can help. I still check the answer.

Evidence

Three checked answers with page numbers.

Scratch appTeachable Machine (teacher-led)Quiz board kit
Two teachers guiding uniformed students as they build a robot car in a classroomFor school leaders

Bring Class 4
to your school.

Start with the four Discovery projects for Class 4 (20 sessions), review the evidence together, then extend to Builder or Innovation.

  • Prospectus and class-wise plan
  • Kit and readiness check
  • Pilot one class first
  • Evidence at every milestone
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