Mayday, mayday! I've lost main thrusters. Get 'em back up!

Mayday, Freedom, mayday! We are out of control! We are going down!

Mayday, Houston, mayday! We've lost R.C.S. thrusters!

S.O.S. Urgent!

There's a distress call just come through.

Cry, the Newborn Baby

In one of the notes we can read this plea

It's a scream for help it's meant to attract attention.

It's a distress call, sir, from the Titanic. She's sinking.

We carried 15 wounded away, four of whom were in a hopeless condition.

The US is not making a demand as much as it is issuing a plea for help.

Early next morning, Mayday calls were jamming the emergency radio frequency.

signal

Signal

Kill signal

Termination signal

Unknown signal

Reference line

single DMA

Send Signal

Send signal

Accept signal

Enter Signal

new Signal

Signal unit

Just give us a sign!

In this exercise you have to compare 2 given fractions by choosing the correct comparison sign. You can change the comparison sign by just clicking on the button showing the sign.

Enter Signal Name

Enter signal name

Enter the signal name

Keep sign of result

Mouse (pointing device) 100 20 2 000

The supply ship's signalling.

Send me your sign.

That's the signal to get going.

I guess that's my cue.

Wait for my signal.

Send out the success code words.

I'll give you the goahead.

That was a useful signal.

You ran a red light.

Wrong top level tag

An Error Signal was Received

Operation sign

(Demonstrating taking a breath, packing, giving the signal).