Trick Question

Three friends shared a meal at a restaruant. Each paid $10 for the meal. The manager realised that he should have charged them only $25 and sent the waiter back to their table with the $5 to repay them. The men could not share the $5 evenly so they told the waiter to keep $2 and they each took $1 back. Hence each man paid only $9 (3 men= $27) and the waiter kept $2 which makes $29.
What happened to the other dollar?

This is a question that I was really stumped on until I read the answer. The answer makes perfect sense.

Trick Question Answer

The problem is the incorrect reasoning. It should be:

Men $3 back

Waiter $2

Meal $25

Total $30 No mystery!



Or another way of looking at it is:

Men actually paid $27 in total - $25 + $2 for waiter.

Slime, make mine lime

You can make your own cornflour slime to learn about fluids and viscosity.

To do this experiment you will need:

cornflour
food colouring
a small mixing bowl
water

What to do:
Pour some cornflour into a mixing bowl.
Stir in little amounts of water until the cornflour has become a very thick paste. This is high viscosity.
To make the slime the colour of your choice, carefully stir about five drops of food colouring into the mixture.
Stir your slime REALLY slowly. This shouldn't be tricky to do.
Stir your slime REALLY fast. This should be almost impossible.
Now punch your slime REALLY hard and fast. It should feel like you're punching a solid.

What's happening:
Anything that flows is called a fluid. This means that both gases and liquids are fluids. Liquids like, water which flow easily are said to have low viscosity, whereas liquids like cold honey which do not flow so simply are said to have a high viscosity. Cornflour slime is a special type of fluid that doesn't follow the usual rules of liquid behaviour. When a pressure is applied to slime, its viscosity increases and the cornflour slime becomes thicker. At a certain point, slime actually seems to lose its flow and behave like a solid. Cornflour slime is an example of a sheer-thickening fluid.

High Viscosity
honey
golden syryp
whipped cream
slime
jam
tomatoe sauce

Low Viscosity
tea
Coke
water
coffee
juice
milk
yoghurt

For more cool experiments by the most wonderful Ms S, click here.

Monarch Butterfly Trail

To see where the butterflies travel click here.

The Pioneer Woman

Word Bank

stetson
pioneer
annual
deliriously
burro
apprehension
leather
chaps
donkey
nervousness



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