MASTERMIND
This “mastermind” is a game made up of an electric circuit
which is operated by two jacks, one for the questions and one for the
answers. If you place one of the jacks onto a ‘question’ and
place the other onto the corresopnding correct ‘answer’,
a bulb will light up to confirm your guess.
Materials: a cardboard box with a lid, some metal paper fasteners,
unipolar wire, a set of 4.5V batteries, a 4.5 V bulb, some nails.
How is it made? Write a series of questions (on different subjects)
on the left side of the lid and write a series of corresponding answers
( in scrambled order) on the right side. Make a small hole under each
question and answer. Fit a paper fastener into each hole and connect
them in pairs under the lid using the unipolar wire.
Make another hole on the lid for the bulb and connect it to the 4.5
V battery. Make some other holes to the right and to the left of the
bulb to pull out two pieces of wire. Connect them to the bulb and to
the battery. Use two nails to make the jacks: Fix the battery to the
box and carry out the testing.
