# data[].attributes.headline
Lesson focuses on exploring electric message systems, from light signals using International Morse Code to text messaging.  Students construct a simple telegraph using a battery, wires, a switch, and bulb, and explore the impact of communications on society. 

# data[].attributes.subject
Lesson focuses on exploring electric message systems, from light signals using International Morse Code to text messaging.  Students construct a simple telegraph using a battery, wires, a switch, and bulb, and explore the impact of communications on society. 

# data[].attributes.body
this shows the wind wells the and now

# data[].attributes.attachment_link.description
Watch my amazing website created on emaze - The stunning web site builder.

# data[].attributes.body
the physical between then and now is pretty much the same when it comes to physical energy just watch too see

# data[].attributes.attachment_link.description
Rosen Publishing, Inc. is an independent educational publishing house that was established in 1950 to serve the needs of students in grades Pre-K -12 with high interest, curriculum-correlated materials.

# data[].attributes.headline
the good old days: Energy past and presint

# data[].attributes.subject
the good old days: Energy past and presint