Problem Solving

1
Problem Solving

• - working in groups

2
Connect the Dots

• Can you connect the 9 dots using only 4 straight
  lines without lifting your pencil from the paper
  or backtracking?

3
The Frustrated Farmer

• Help a farmer get a fox, a chicken, and a bag of
  corn safely across a river in a boat. The farmer
  may only take one thing at a time in the boat.
  She cannot leave the fox and the chicken together
  on either side of the river, or the fox will eat
  the chicken. Likewise, she cannot leave the
  chicken alone with the bag of corn or the chicken
  will eat the corn.
• How can the farmer get everything across the
  river without anything being eaten?

4
Cab Conundrum

• Three men agree to share a cab from the airport
  into town. When they arrive, the meter reads 25.
  Each man gives the driver a 10 bill. She hands
  them five 1 bills as change. Each man takes one
  of the 1 bills. They give the driver the
  remaining two 1 bills as a tip.
• Each man has now spent nine dollars and the
  driver has two dollars for a total of 29. Where
  is the other dollar?

5
Triangle Mystery
6
Find the Numbers

• Can you find the numbers A, B, C and D so that
  the following works? (There is an easy answer and
  a not-so-easy answer!)
• A B C D
• x 4
• D C B A