Category Archives: 5th grade history

The American Frontier comprises the geography, history, folklore, and culturalexpression of life in the forward wave of American expansion that began with Englishcolonial settlements in the early 17th century and ended with the admission of the lastmainland territories as states in 1912.“Frontier” refers to a contrasting region at the edge of a European-American line ofsettlement.Continue reading “History Week 19”

Condensed Milk is not an invention but it’s a milk to spare and save it for ice-cream and to drink. It first started on a boat where there would be tens to hundreds of kids that drank milk but they didn’t have a running fridge at the time so a lot of kids would getContinue reading “History Week 15”

The Electromechanical Relay. It’s used for a circuit to connect to a panel box so like a TV remote or a light switch. It’s used everywhere and every minute, it’s used by millions of people. It consists of a coil that shoots up and down when you flick the light switch on or off withContinue reading “History Week 8”

The microphone it was invented in 1916 by Thomas Edison. He made it for offices and jobs. It made up of metallic steel metal and of a sound board its used for airplanes, offices, and jobs. This is how you make a makeshift microphone: you need metal, a voice recorder, and an electromagnet. The typewriterContinue reading “week 5 history.”

Portland cement is used for 3D printing and building. Rome first introduced it in 1756. The primary ingredient of cement is concrete holding it all together. The first people to use it were Romans and Europeans. Romans used it extensively for building, Europeans barely used it for building. After Rome fell all the cement wasContinue reading “History week 4.”

Lesson 11. The pencil. It was found around 1560 by Indians that used rocks with graphite on it. Around 1896 pencil was made by British. There were other people that made it, but Brunel was the first one ever. After this inventio other people started making it. The main utensils is graphite, lead and woodContinue reading “History Week 3.”

Vapor-compression theory. A long time ago, people were using metal box filled with ice to store their food and drinks. Some of them had to travel 200 miles back and forth to get ice. William Cullen and Ben Franklin were first, who experimented with artificial cooling system, but it did not work at that time.Continue reading “History review 10: Compression theory and canning process.”

A Suspension bridge is a big local bridge like a Golden Gate bridge and San Fransico bridge. Over 56,000 people cross the San Fransisco bridge a day. Long ago ancients made bridges out of hard rock and metal, but others made bridges out of chains and wood which was flimsy. The longest bridge ever wasContinue reading “Suspension bridges.”