IGICONIC GAMESSENIOR // FUTURE LEARNING
TERM 3 · WEEK 5Circuit City
YEAR 8IMAGINE · PLAN · BUILD · ACT
SYSTEMS LAB · MISSION 05
POWERED CITY

YEAR 8 · TERM 3 · WEEK 5

Circuit City

Why does one circuit fail while another keeps going?

CIRCUIT CITY · GRID CONTROL: Two lamps are meant to keep a fictional emergency corridor visible, but one fault is taking down more of the network than expected. Build the low-voltage virtual circuits, compare meter readings, open a branch deliberately and work out which layout contains the failure instead of spreading it.
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MISSION DECKSYSTEMS LAB / WEEK 05SELECT A MODULE
01BRIEFMission 02LEARNIntel 03INVESTIGATEEvidence 04ENGLISHEvidence case 05DECIDEMake the call 06DATANumbers 07PROJECTBuild 08CHECK-INReflect ★GAMEReward
ACTIVE OBJECTIVECIRCUIT CITY · GRID CONTROL: Two lamps are meant to keep a fictional emergency corridor visible, but one fault is taking down more of the network than expected. Build the low-voltage virtual circuits, compare meter readings, open a branch deliberately and work out which layout contains the failure instead of spreading it.
WORLDSYSTEMS LAB
SEQUENCE01 / 08
REWARDGAME BREAK
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READY?

Watch. Check the clues. Have a go.

Everything you need is on this page.

Start mission →
Need help getting started?
YOU NEED
  • Required: a device with this page open.
  • Optional: headphones for video or read-aloud.
  • Optional: pen + paper for rough working if that helps you think.
HOW TO DO IT
  1. Read or listen to the Briefing + Learn.
  2. Do the interactive mission.
  3. Use facts from the reading and maths parts.
  4. Make your choice and save your project step.
  5. Play the weekly game. Finish Check-in.
WORK YOUR WAY

Short bursts are fine. Use Learning Tools for easier reading, read-aloud, less on screen, stronger contrast, no-rush and quieter-screen options.

If you get stuck, look at the example and try again.

SCIENCE SAFETY: The science investigations in this Senior mission are designed as virtual/screen-based activities unless the page clearly says otherwise. Do not improvise mains electricity, heating or chemical experiments at home.

PROJECT NOTE: Your project can stay digital. Physical making is optional unless you choose that format.

MISSION BRIEFING

CIRCUIT CITY · GRID CONTROL: Two lamps are meant to keep a fictional emergency corridor visible, but one fault is taking down more of the network than expected. Build the low-voltage virtual circuits, compare meter readings, open a branch deliberately and work out which layout contains the failure instead of spreading it.

✓Explain current as charge flow in a complete circuit and voltage as an energy-per-charge difference supplied across components.
✓Compare simple series and parallel layouts using circuit paths and virtual meter readings.
✓Diagnose an open circuit, distinguish it from an unintended low-resistance bypass/short path, and explain why fault type matters.
✓Use simple V = IR reasoning in the idealised teaching model and interpret current/voltage data rather than relying only on whether a lamp looks on or off.
✓Evaluate circuit resilience for a stated purpose and identify limitations of transferring a low-voltage simulation directly to real electrical systems.
MISSION MEDIA · FuseSchool

Series and Parallel Circuits

Compare current paths in series and parallel layouts before triggering Circuit City faults.

YOUTUBE ↗

Captions are controlled inside the YouTube player. If the embed is unavailable, use the YouTube link.

LEARN

SOURCE → PATH → MEASURE → FAULT → REDESIGN

A working circuit needs a SOURCE and a COMPLETE CONDUCTING PATH. CURRENT describes the rate of charge flow; VOLTAGE describes a potential difference that can transfer energy through components. In a SERIES circuit, components share one path, so an open anywhere in that path can stop current through the whole loop. In a PARALLEL circuit, separate branches can provide independent complete paths, so one open branch does not necessarily stop the others. The idealised model also uses V = IR for simple comparisons. Diagnose with SOURCE → PATH → MEASURE → FAULT → REDESIGN. Household mains systems involve hazards and protection requirements that are outside this virtual model.

LEARNING BUILD

Learn it. See it. Try it.

Look at the example. Check another point of view. Then try the task.

Step 1: Choose a starting clue
WHAT YOU ALREADY KNOW

Reasoning lens:SYSTEM → VARIABLES → MECHANISM → COMPETING EXPLANATION → EVIDENCE → REDESIGN

What do you already know?

English / communication:Technical explanation, diagram interpretation, diagnosis and evidence-based design justification.

Maths / data:Voltage/current measurements, simple proportional comparison and idealised V = IR calculations.

Topic knowledge:Current, voltage, conductors/insulators, series and parallel circuits, open/short faults and resilient circuit design.

This week’s first target:Explain current as charge flow in a complete circuit and voltage as an energy-per-charge difference supplied across components.

Which clue is a good place to start?

Choose a source that can directly support part of the investigation. More than one source may be useful, but start with evidence that does not outrun its support.

Need more help? See the teaching
TEACH 1 · CORE MODEL

A working circuit needs a SOURCE and a COMPLETE CONDUCTING PATH. CURRENT describes the rate of charge flow; VOLTAGE describes a potential difference that can transfer energy through components. In a SERIES circuit, components share one path, so an open anywhere in that path can stop current through the whole loop. In a PARALLEL circuit, separate branches can provide independent complete paths, so one open branch does not necessarily stop the others. The idealised model also uses V = IR for simple comparisons. Diagnose with SOURCE → PATH → MEASURE → FAULT → REDESIGN. Household mains systems involve hazards and protection requirements that are outside this virtual model.

TEACH 2 · WHAT TO NOTICE

Explain current as charge flow in a complete circuit and voltage as an energy-per-charge difference supplied across components.Compare simple series and parallel layouts using circuit paths and virtual meter readings.

TEACH 3 · CONNECT + TRANSFER

Diagnose an open circuit, distinguish it from an unintended low-resistance bypass/short path, and explain why fault type matters. Use simple V = IR reasoning in the idealised teaching model and interpret current/voltage data rather than relying only on whether a lamp looks on or off. Evaluate circuit resilience for a stated purpose and identify limitations of transferring a low-voltage simulation directly to real electrical systems.

WORKED EXAMPLE · EVIDENCE

SERIES · 3 V · no fault

The idealised two-lamp series model records total current 0.25 A and about 1.5 V across each identical lamp.

Reasoning: Start with exactly what the source establishes. Connect it to the relevant concept, then stop before the claim becomes broader than the evidence. Now compare it with UNSAFE GENERALISATION: A fictional post claims that because the virtual circuit is easy to rewire, household mains circuits can be experimented with in the same way. The simulation does not support that claim.

Why caution still matters:This item is weak evidence for a broad conclusion: its claim or implication reaches beyond what the available support can establish.

WORKED EXAMPLE · MATHS / DATA ROUTE

In the idealised model, one 6 Ω lamp branch is connected across a 3 V supply. Using I = V ÷ R, what current flows in that branch?

This week’s maths/data focus:Voltage/current measurements, simple proportional comparison and idealised V = IR calculations.

Name the variable or relationship, keep the units visible, calculate or compare, then interpret the result as evidence about the system. A result can support an explanation without proving every possible cause.

WE DO · GUIDED PRACTICE

Which source needs the most caution before it is used to support a broad conclusion?

Choose any source whose claim outruns its support.

YOU TRY · INDEPENDENT PRACTICE

For Circuit City, explain one core idea, connect it to one named source or observation and one quantitative/data point from this page, then state an alternative explanation, trade-off or limitation that a strong judgement must consider.

Write at least 30 words. Name the evidence or data you are using and keep the claim inside what it can support.

MISCONCEPTION CHECK

UNSAFE GENERALISATION:A fictional post claims that because the virtual circuit is easy to rewire, household mains circuits can be experimented with in the same way. The simulation does not support that claim.

This item is weak evidence for a broad conclusion: its claim or implication reaches beyond what the available support can establish.

HELP

Try: “If ___ changes, the mechanism predicts ___. Evidence ___ supports/challenges that. An alternative explanation is ___. I would test ___ next.”

STRETCH · OPTIONAL

Build the strongest reasonable counter-argument or alternative explanation. Name one additional piece of evidence that could distinguish between the two positions.

CIRCUIT CITY · GRID CONTROL

CIRCUIT CITY

Build the network. Trigger the fault. Keep the system running.

Compare series and parallel circuit behaviour, interpret simple voltage/current data, diagnose faults and choose a resilient low-voltage virtual design.

CIRCUIT SYSTEM CHECK

What is required for current to flow through the intended low-voltage circuit path?

VIRTUAL LOW-VOLTAGE GRID

Build, measure and fault-test two lamp networks.

Virtual simulation only. It represents a small low-voltage teaching circuit, not household mains electricity.

LAYOUT
SUPPLY
FAULT
LAMP 1OFF
LAMP 2OFF
SUPPLY—V
TOTAL CURRENT—A · model
LAMP 1—V across lamp
LAMP 2—V across lamp
SERIES · NORMALNOT LOGGED

3 V · no fault.

SERIES · ONE OPEN LAMPNOT LOGGED

3 V · Lamp 1 open.

PARALLEL · ONE OPEN LAMPNOT LOGGED

3 V · Lamp 1 open.

FAULT DIAGNOSIS · 3 CASES
FAULT 1

A wire breaks and the conducting path is no longer complete.

FAULT 2

Current is given an unintended very-low-resistance path that bypasses the intended load.

FAULT 3

One lamp in a parallel branch is removed, but another complete branch remains.

RESILIENCE CHECK

Why can a parallel layout keep one lamp operating when another branch opens?

MEASUREMENT AUDIT

What is the strongest reason to use meter readings when diagnosing the virtual circuit?

MODEL LIMIT

Which statement keeps the simulation inside its limits?

Complete the circuit principle check, three required circuit runs, three fault diagnoses and the resilience, measurement and model-limit audits.

OPEN THE WEEK 5 EVIDENCE FILES
SOURCE 1

SERIES · 3 V · no fault

The idealised two-lamp series model records total current 0.25 A and about 1.5 V across each identical lamp.
SOURCE 2

SERIES · Lamp 1 open

Opening Lamp 1 breaks the only conducting path, so both lamps are off and the model current falls to 0 A.
SOURCE 3

PARALLEL · Lamp 1 open

With two independent branches across a 3 V supply, opening the Lamp 1 branch leaves Lamp 2 connected across the supply. The teaching model records Lamp 2 on and total current 0.50 A.
SOURCE 4

MODEL ASSUMPTION

The virtual lamps and wires are idealised. Real components have ratings, internal resistance, heating, protection devices and other behaviours not represented here.
SOURCE 5

UNSAFE GENERALISATION

A fictional post claims that because the virtual circuit is easy to rewire, household mains circuits can be experimented with in the same way. The simulation does not support that claim.

INVESTIGATE + ENGLISH · EVIDENCE CASE

Resilience depends on paths, measurements and the kind of fault

Circuit City uses a deliberately simplified low-voltage model. In a series layout, both lamps share one continuous path. If that path is opened at Lamp 1, current through the loop stops and Lamp 2 also goes out. In a parallel layout, each lamp sits on its own branch across the supply. Opening one branch can leave the other branch complete, allowing the second lamp to keep operating. Meter readings add evidence that a visual inspection cannot provide. They can show whether current is flowing and how voltage is distributed. A robust diagnosis also distinguishes an open path from an unintended low-resistance bypass, because the system behaviour and risks are different.

MAKE THE CALL

The corridor needs two lights, and the design goal is that one open lamp branch should not turn off the other light. Choose a circuit layout, use the virtual fault-test and meter data to justify it, identify one trade-off, and name one real-world safety/design factor the simulation does not model.

BUILD YOUR CASE CONCLUSION1. Make the call. 2. Use at least two relevant pieces of evidence. 3. Explain one limitation or uncertainty. 4. Finish with what can responsibly be concluded.Strong structure: My judgement is… The strongest evidence is… However, we still do not know… Therefore…

CASE CONCLUSION: Write 220–300 words diagnosing the fictional Circuit City fault and recommending either a series or parallel layout for the emergency corridor. Use at least three meter or fault observations, explain current and voltage in context, include one simple V = IR calculation, identify one trade-off and state one limitation of the simulation.

0/220 words minimum for this writing mission.

CLAIMEVIDENCELIMITATIONCONCLUSION

MATHS + DATA LAB

Check the numbers.

HOW TO SUCCEEDRead the situation first. Estimate what a sensible answer should look like, choose an efficient calculation, then use the feedback to check your reasoning.For data questions, explain what the number shows — and what it does not prove.

In the idealised model, one 6 Ω lamp branch is connected across a 3 V supply. Using I = V ÷ R, what current flows in that branch?

MISSION 05 · MATHS + DATA LAB

DATA TRAINING

MEASUREMENT + GEOMETRY · YEAR 8 EXTENSION
6 PROBLEMS
QUICK METHODMEASUREMENT + GEOMETRY

Write the correct formula or conversion before substituting values.

GUIDED · Q01–Q03Use the quick method, then check the explanation.
Q01

Rectangle 8 m × 5 m. Area?

Q02

Rectangle 8 m × 5 m. Perimeter?

Q03

A straight angle measures…

INDEPENDENT · Q04

2.5 m equals…

INDEPENDENT · Q05

A triangle has angles 50° and 60°. Third angle?

INDEPENDENT · Q06

A cube has side length 3 cm. Volume?

OPTIONAL CHALLENGE · OPEN RESPONSE

A design keeps the same area but changes shape. Explain what can happen to its perimeter and give an example.

0 words · optional
0 / 6 completeComplete every problem to finish the data lab.

PROJECT HQ · PROJECT FILE 05

TEST — collect performance data.

Start something real. Build an idea, test it, improve it, and share it. Make your move.

TEST your Resilient Systems Challenge with a defined metric and comparison. Record the pressure/fault condition, performance evidence, one trade-off and the revision the evidence supports.

MAP SYSTEM→FIND WEAK POINT→DISRUPT→DESIGN→TEST→REVISE→PRESENT

WEEK 5 · FIRST PROPER TEST · Collect performance evidence under a defined pressure or fault condition. Your test should be repeatable enough that another learner could understand what changed and what was measured.

Complete all five fields. Your Week 5 test log is saved on this device.

Project sharing will be optional. A future upload system must keep private submission separate from public-showcase/marketing permission.

CHECK-IN

What changed in your thinking?

YEAR 8 · REMIX · TERM 3 / WEEK 5

RESCUE RANGE

Tag moving holograms quickly without hitting rescue drones.

UPGRADED DIFFICULTYBEST SCORE SAVED
PLAY RESCUE RANGE
A remastered ICONIC GAMES favourite · phone + keyboard controls.

YEAR 8 · SENIOR HOMEWORK CLUB

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