Exploring Chapter 3: Adding and Subtracting Rational Expressions

At age 13, the narrator becomes curious about science and technology, shifting from childhood interests to exploring radios with his friend Jeffrey. They learn about radio mechanics and electricity through hands-on experimentation, despite limited resources. This curiosity extends to understanding how things work, like dynamos and electricity, which are scarce in their African village. The narrator aspires to become a scientist, driven by a desire to bring electricity to his community. He prepares for exams to advance to secondary school, hoping to study more science and fulfill his dream.

What game did the narrator and his friends play at the trading center?

• Checkers

• Bow Wow

• Scrabble

• Chess

What did the narrator and Jeffrey discover about the white noise in radios?

• It comes from the speakers

• It originates from the circuit board

• It is caused by the antenna

• It is due to the battery

How did the narrator and Jeffrey test the strength of discarded batteries?

• By using a voltmeter

• By shaking them

• By connecting them to a radio

• By attaching a wire to a flashlight bulb

What did the narrator use as a makeshift soldering iron?

• A piece of aluminum foil

• A heated nail

• A metal rod

• A thick piece of wire heated over the kitchen fire

What did the narrator and Jeffrey discover about alternating and direct current?

• They are the same

• They are different types of electrical currents

• They are used in batteries

• They are used in radios

What percentage of homes in the narrator's country have electricity?

• 15%

• 50%

• 25%

• 8%

What was the main source of light for the narrator's family?

• Electric lamps

• Candles

• Kerosene lanterns

• Flashlights

What was the narrator's main hope for bringing electricity to his village?

• Building a power plant

• Using a bicycle dynamo

• Passing his exams and studying science

• Buying a generator

What was one of the challenges the narrator faced at his primary school?

• No desks

• Lack of teachers

• No playground

• Holes in the roof

What subject did the narrator find most difficult?

• English

• Social Studies

• Math

• Agriculture