Pogo stick
fire safety doors
sun lounger
Weighing things.
Agenda means a list of things to do
The Ancient Romans were responsible for the production of many items/designs that we still use today. Some of these are: - Advanced roads and roadways - Aqueducts - Water pumps - Tools used in engineering, measuring and construction - Cesareans (or C-sections) - Reinforced concrete - Our calendar - Umbrellas (for both sun and rain) - Showers - Indoor plumbing - Flushing toilets - Books (instead of scrolls) - Ploughs
An in/out board can be used in a number of ways. The most common use is to have a list of things that need to be done ("in") and a list of things that are done ("out").
paper clips
There are a number of resources that one can use to find a list of free things to do in Chicago. For instance, Enjoy Illinois, National Geographic, and Things to do in Chicago all list free things to do in Chicago.
You can use a piece of paper and a pencil to make a mailing list or a program on your computer like wordpad. A mailing list is usefull for alot of things.
The spring in the springing spring doesn't move because of the electrical current. In the book it tells you to use a 6-v Battery. To actually make the spring move you would need to use a car battery. With a car battery within three seconds the wire would melt.
agenda
it's made out of milk
bridges and cantilever and windows
There are actually three things it needs:WaterSunlightCarbon Dioxide