Science, Nature & How It Works
epub |eng | 2019-06-27 | Author:Angie Smibert [Smibert, Angie]
The Real Heroâs Engine In the 1st century AD, Hero of Alexandria invented the first steam engine. It was a round copper container with L-shaped tubes. When the water inside ...
( Category:
Science, Nature & How It Works
October 4,2022 )
epub |eng | 2016-07-14 | Author:Elise Moser
Milly and Jenny went to visit the students at Spruce Street School. The principal made it extra fun by arranging for each kid to have a can of Sun Drop, ...
( Category:
Science, Nature & How It Works
October 4,2022 )
epub |spa | | Author:Eileen S. Coates [Coates, Eileen S.]
GALILEOâS TELESCOPE Even though Galileo didnât invent the first telescope himself, he did have ideas to make it more useful. He used math to figure out how to change the ...
( Category:
Science, Nature & How It Works
October 4,2022 )
epub |eng | | Author:Avery Elizabeth Hurt
For the first time anywhere, books could be mass-produced. This was the greatest advance in communication since the invention of writing. The consequences would be enormous. Keeping the Books Gutenberg ...
( Category:
Heavy Machinery
October 4,2022 )
epub |eng | 2015-11-10 | Author:Anne Margaret Lewis
The puddle whispered, âJump, Puddle Jumper, jump!â As Sam jumped, he wished . . . I wish I were a frog in a pond with a hat and some spots ...
( Category:
Weather
October 4,2022 )
epub |eng | | Author:Brian Belval
The Carbon Cycle Carbon is so essential that nature has devised a system to recycle it. The carbon cycle is the exchange of carbon between living things, the atmosphere, the ...
( Category:
Chemistry
October 4,2022 )
epub |eng | 2020-07-03 | Author:Cassie M. Lawton
Another type of circulation involves the kidneys. Itâs called renal circulation. âRenalâ means having to do with the kidneys. Renal circulation is a part of systemic circulation. Oxygen-rich blood enters ...
( Category:
Science, Nature & How It Works
October 4,2022 )
epub |eng | | Author:Greg Roza
Freezing with Liquid Nitrogen Manufacturers liquefy nitrogen to purify it, but they also sell nitrogen in its liquid form. You may have seen a scientist experimenting with liquid nitrogen. It ...
( Category:
Chemistry
October 4,2022 )
epub |eng | 2020-07-03 | Author:Cassie M. Lawton
The pituitary gland (yellow above and enlarged below) is attached to the hypothalamus. It helps your body grow. Your hypothalamus is near the pituitary gland. It produces hormones that control ...
( Category:
Science, Nature & How It Works
October 4,2022 )
epub |eng | 2020-07-03 | Author:Cassie M. Lawton
The eye relies on a type of smooth muscle called multi-unit to let in light to see. Muscles are needed in all activities, such as long-distance running. Chapter Three THE ...
( Category:
Science, Nature & How It Works
October 4,2022 )
epub |eng | 2022-02-27 | Author:C. J. Haslam [Haslam, Chris]
At ten to eight the following morning, Orla freewheeled along the quayside in St Stannard to where the Stannard Hotel lurked on the edge of a salt marsh as awkwardly ...
( Category:
Environment
October 4,2022 )
epub |eng | 2007-10-15 | Author:Lauri Berkenkamp
Who Is the Early Bird? Birds are often the first animals to migrate in the spring. In this activity you will keep track of the dates when you first hear ...
( Category:
Experiments & Projects
October 4,2022 )
epub |eng | 2020-07-03 | Author:Cassie M. Lawton
There are two types of bone marrow in your body. They both are shown here. Fast Fact Sesamoid bones are short or irregular bones that are embedded within and held ...
( Category:
Biology
October 4,2022 )
epub |eng | | Author:John Davidson
The Panda bears are cute and cuddly to look at. They are however dangerous when provoked. They love privacy and can be easily seen during the mating or nurturing period. ...
( Category:
Zoology
October 4,2022 )
epub |eng | 2020-07-03 | Author:Derek Miller
THINK ON YOUR OWN Why might elevators go out of service on windy days? This ball, which is inside a building in Taiwan, is the worldâs largest and heaviest damper. ...
( Category:
Science, Nature & How It Works
October 4,2022 )
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