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Locks and passwords are safety devices that are used everywhere to keep things safe.

Can you give some other examples of safety devices?

Build this Safe-Deposit Box.

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This Safe-Deposit Box will help keep your valuables out of the hands of crooks. But first, you’ll have to build it.

If you have time, build your own design!

Now open it.

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Play the program to figure out how your Safe-Deposit Box works.

First, the safe will lock.

Press the left button on the Hub to unlock it.

Make it safer.

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Add a condition to your program.

Make it so your Safe-Deposit Box only opens when the dial has been turned more than 180 degrees clockwise.

Here’s an example of a condition:

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Now make it even safer!

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Modify your program to work like the dial on a safe. For example, to open, the dial must turn:

  • 180 degrees clockwise
  • 90 degrees counterclockwise
  • 180 degrees clockwise

Evaluate your performance.

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Think about what you did well and how you could improve for next time.

Your package is in good hands!