Thames & Kosmos Candy Vending Machine - Super Stunts and Tricks handleiding

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Thames & Kosmos

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Handleiding

Candy Vending Machine Experiments

EXPERIMENT 1

1. Place a quarter in the coin slot at the

top of the machine and turn the

crank clockwise. Which prize door

does the quarter fall behind?

Place the 25 ¢ sticker on that prize

door button.

2. Repeat for a dime (10 ¢), a nickel (5 ¢),

and a penny (1 ¢).

3. Add the rest of the stickers to the

machine. Refer to the box.

When the new United States government

established coins in the 1790s, the basic

unit was the silver dollar, which was actually made of silver. The half-dollar,

the quarter, and the dime were also made of silver. The dime had to be very

small because it contained only one tenth of the amount of silver in a silver

dollar. The penny and the nickel were introduced later. The U.S. Treasury

decided to make these new coins out of cheaper metals: copper for the

penny, and nickel for the nickel, so they could be larger and wouldn’t get

lost in people’s pockets.

So why is a dime

smaller than a nickel

and penny, even though

it’s worth more money?

How does the coin sorter

work? Look closely at the

back of the machine, at

part P7. What do you

notice about the holes?

The holes get progressively

bigger. Take a nickel (5 ¢)

for example. As the nickel

rolls down P7, it is too big

to fall through the ﬁrst and

second holes. but when it

gets to the third hole, it

falls right through.

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EXPERIMENT 2

1. Turn the coin wheel crank until the

number 1 is lined up with the coin

slot at the top of the machine.

2. Place a coin in the coin slot, then

rotate the coin wheel crank

clockwise. Where does the coin

come out?

3. Repeat steps 1 and 2 with different

coins. What do you notice?

4. Repeat steps 1 and 2, first lining up a

different number on the coin crank.

At the top of the machine, you can use the numbers on

the coin wheel to determine which slot the coin will

drop out of. How does it work? Look closely at the back

of the machine. Part P10 has four tracks for the coin to

travel in. The track is determined by where the coin is

placed in the coin wheel. To understand this

mechanism, slowly rotate the coin wheel crank as you

watch the back of the machine.

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