Gracie

Ver más

The Number System

por Alberta Hosteen

Implementing Technology in the Classroom

por Sallie Draper

Free Market Economy

por Katarina P

Project 4 Solar energy

por Mariam Kolaghassi

Inventions

Telephone

I use it everyday

It has become portable

Originally string and 2 paper cups

1804

Francisco Salva Campillo

Kindle

It is easy to read

It has gotten more effisiant

It was less efficient

November 19, 2007

Michael Cronan

Duck tape

Easy and fun to use

There are more colors and prints now

Originally used for rapping cable

1942

Richard Drew

DVD

It is easy to carry around

Has a better picture now

The picture was not very clear

1995

Alan E. Bell

iPod

It is fun to use

It has gotten smaller and easyer to use

It was originally used only for music

October 21,2012

Steve Jobs

Wheel

Helps transport me places

Bigger and more steady

Was intended to rotate on an axial bearing

3500–3350 BC

Mesopotamian's