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USING ONLY YOUR BRAIN SOLVE THIS PROBLEM IN YOUR HEAD NO TALKING YOU HAVE 1 MINUTE

You are going to solve a problem You will see a number of slides giving you instructions You must follow the instructions When you hear the chimes please read the new instruction on the board ARE YOU READY?.

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USING ONLY YOUR BRAIN SOLVE THIS PROBLEM IN YOUR HEAD NO TALKING YOU HAVE 1 MINUTE

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  1. You are going to solve a problemYou will see a number of slides giving you instructionsYou must follow the instructionsWhen you hear the chimesplease read the new instruction on the boardARE YOU READY?

  2. USING ONLY YOUR BRAIN SOLVE THIS PROBLEM IN YOUR HEAD NO TALKING YOU HAVE 1 MINUTE

  3. HOW CAN ALL FOUR MEN CROSS THE BRIDGE WITHIN 17 MINUTES? • Four men want to cross a bridge. They all begin on the same side. It is night, and they have only one flashlight with them. At most two men can cross the bridge at a time, and any party who crosses, either one or two people, must have the flashlight with them. • The flashlight must be walked back and forth: it cannot be thrown, etc. Each man walks at a different speed. A pair must walk together at the speed of the slower man. Man 1 needs 1 minute to cross the bridge, man 2 needs 2 minutes, man 3 needs 5 minutes, and man 4 needs 10 minutes. For example, if man 1 and man 3 walk across together, they need 5 minutes.

  4. STILL USING ONLY YOUR BRAIN SOLVE THIS PROBLEM IN YOUR HEAD NO TALKING YOU HAVE 1 MINUTE

  5. HOW CAN ALL FOUR MEN CROSS THE BRIDGE WITHIN 17 MINUTES? • Four men want to cross a bridge. • They all begin on the same side. • It is night, and they have only one flashlight with them. • At most two men can cross the bridge at a time, and any party who crosses, either one or two people, must have the flashlight with them. • The flashlight must be walked back and forth: • it cannot be thrown, etc. • Each man walks at a different speed. • A pair must walk together at the speed of the slower man. • Man 1 needs 1 minute to cross the bridge, man 2 needs 2 minutes, man 3 needs 5 minutes, and man 4 needs 10 minutes. • For example, if man 1 and man 3 walk across together, they need 5 minutes.

  6. STILL USING ONLY YOUR BRAIN SOLVE THIS PROBLEM IN YOUR HEADYOU HAVE 1 MINUTE

  7. 17 minutes 1 Minute 2 Minutes 5 Minutes 10 Minutes

  8. STILL USING ONLY YOUR BRAIN SOLVE THIS PROBLEM IN YOUR HEADBUT THIS TIME YOU CAN USE PAPER AND A PENSTILL NO TALKINGYOU HAVE 1 MINUTE

  9. 17 minutes 1 Minute 2 Minutes 5 Minutes 10 Minutes

  10. SOLVE THIS PROBLEM USE PEN AND PAPERAND YOU CAN TALK NOWYOU HAVE 1 MINUTE

  11. 17 minutes 1 Minute 2 Minutes 5 Minutes 10 Minutes

  12. WHAT IS THE ANSWER?

  13. Did you spot the differentiation? • Highlighting and ordering text • Visualisation • Writing down information • Group work • Discussion • Sharing ideas

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