1.tel_phone,  tele_ision,  be f_mous for,  

l_ght up,  al_ow,  ac_ivity,  e_tend,  

act_ve,  sp_ech,  d_af,  sp_lled,  a_id,  

ass_stant,  w_rd,  di_tance,  dev_lop,  t_ke up,  

ent_re,  calc_late,  mathem_tical,  pr_blem,  e_se,  

pers_nal,  _se,  doc_ment,  v_deo,

comm_nicate,  soci_ty.

2.

light bulb

When was light bulb invented?

Light bulb was invented in 1879.

Who was light bulb invented by?

Light bulb was invented by Thomas Edison.

Where was light bulb invented in?

Paper was invented in The U.S.A.

What was light bulb used for?

Light bulb was used for giving light.

How did light bulb change the world?

The light bulb allowed activities to extend 

all night long. And it also allowed cities to stay

active into the night.

3.

telephone

When was telephone invented?

Telephone was invented in 1876.

Who was telephone invented by?

Telephone was invented by Alexander Graham 

Bell.

When was the first telephone call made?

The first telephone call was made in 1876.

What was the first telephone call said?

The first telephone call was said“Mr Watson, 

come here! I need you!”.

How did telephone change the world?

Telephone allowed people to talk to others from 

long distances.

4.

first computer

When was the first computer invented?

The first computer was invented in 1946.

Who was the first computer invented by?

The first computer was invented by J. Presper 

Eckert, Jr., and John W. Mauchly.

What was the first computer developed for?

The first computer was developed for army to do 

calculations.

How did the first computer change the world?

The first computer allowed a person to calculate 

mathematical problems with ease.

5.

desk computer

When was the first desk computer invented?

The first desk computer was invented in 1971.

What was the first desk computer produced for?

The first desk computer was produced for 

personal use.

What is the desk computer used for today?

The desk computer was used for store music, 

pictures, documents, videos, and much more.

How did the first desk computer change the 

world?

The first desk computer have changed the way 

that we communicate as a society.