Skip to content

Apollo 13 · April 1970

Apollo 13: Bring Them Home

A tank fails 200,000 miles from home. Power, air and time are all short.

Ages
13 to 15
Time
About 20 minutes
Shape
3 decisions and a defense

Part 2 of 3 in the series Engineers on the Line

The situation

In April 1970, Apollo 13 carried three astronauts toward the Moon in two linked spacecraft, Odyssey and Aquarius.

Years before launch, one oxygen tank had been dropped and later damaged in a ground test. No one caught it. About 56 hours into the flight, a routine stir of the tanks set off the damaged wiring, and the ship lost power, oxygen and water.

Your teen works as a systems analyst: where could one hidden fault spread, and what would each fix have cost?

The background and the choices come from the historical record. What really happened is shown only after your teen writes a defense.

What it builds

Mapping how parts of a system depend on each other, and telling where a fault starts from where it spreads.

  • Using evidence

    Backs each claim with a specific fact from the simulation.

  • Seeing ripple effects

    Traces second- and third-order effects through the system.

  • Judging risk

    Names likely and severe risks and how to reduce them.

  • Making a clear argument

    A clear claim, reasons, and an answer to the best counter-argument.

Subjects it touches: History, Science, Engineering. It sits beside your core curriculum; it doesn't replace it.

Try the first decision

A short preview. It has no AI and saves nothing. Want two minutes with the background first? Try a mission free

Decision 1 of 3 · Preview, no AI, nothing saved

Before the flight, oxygen tank No. 2 and its neighbor shared one bay in the service module, wired and plumbed close together. A damaged switch inside tank No. 2 went unnoticed because routine checks weren't built to find it. You are mapping where a single hidden fault could grow into something bigger.

What would you do?

Opening soon.

Accounts open shortly. Every student gets 15 free tutor messages, enough to try a mission. After that, $888 a year or $88 a month for one student.

More for ages 13 to 15