News_3-D_Tech_Early_L
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1-D 2-D 3-D This 3-D bike was made by a special new printer. line paper bowl What kinds of objects will 3-D printers make next? Computer printers don’t just use flat paper anymore. A new printer can make solid objects, such as bikes or lamps. Solid objects are 3-D, or three- dimensional . A flat piece of paper is only 2-D. It has length and width. But a bike is 3-D. You can measure a bike from side to side and top to bottom. But you can also measure it from front to back. So a bike is a 3-D object. presented by a division of Learning A-Z Science a-z 1 www.sciencea-z.com © Learning A–Z All rights reserved. SCI E NC E N E WS in the © iStockphoto.com Milorad Zaric How can a 3-D printer make a bike? First, scientists make plans on a computer. They send these plans to the printer. The 3-D printer builds each part of the bike in thin layers of powder. Heat melts the powder and makes it solid. Then scientists snap the parts together. It looks just like a bike, and it works, too! Compare these items that have 1, 2, and 3 dimensions. November 2011 3-D Technology: Print Me a Bicycle! By Ron Fridell Credits: top: © Rex Features/AP Images; bottom left: © iStockphoto.com/t_kimura; bottom center: © iStockphoto.com/Roberto A Sanchez; bottom right: © Jupiterimages Corporation
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Transcript of News_3-D_Tech_Early_L
1-D
2-D
3-D
This 3-D bike was made by a special new printer.
line
paper
bowl
What kinds of objects will 3-D printers make next?
Computer printers don’t just use flat paper anymore. A new printer can make solid objects, such as bikes or lamps.
Solid objects are 3-D, or three-dimensional. A flat piece of paper is only 2-D. It has length and width. But a bike is 3-D. You can measure a bike from side to side and top to bottom. But you can also measure it from front to back. So a bike is a 3-D object.
p r e s e n t e d b y a d i v i s i o n o f L e a r n i n g A - ZScience a-z
1 www.sciencea-z.com© Learning A–Z All rights reserved.
Science neWS in the
© iS
tockphoto.com
Milorad Zaric
How can a 3-D printer make a bike? First, scientists make plans on a computer. They send these plans to the printer. The 3-D printer builds each part of the bike in thin layers of powder. Heat melts the powder and makes it solid. Then scientists snap the parts together. It looks just like a bike, and it works, too!
Compare these items that have 1, 2, and 3 dimensions.
November 2011
3-D Technology: Print Me a Bike!
3-D Technology: Print Me a Bicycle!By Ron Fridell
Credits: top: © Rex Features/AP Images; bottom left: © iStockphoto.com/t_kimura; bottom center: © iStockphoto.com/Roberto A Sanchez; bottom right: © Jupiterimages Corporation
2 www.sciencea-z.com© Learning A–Z All rights reserved.
Science in the neWSContinued from page 1
Write About This!
How You See in
Hold a finger up. Look at it with one eye and then the other. Why does your finger seem to jump left and right? Each eye sees things from a different angle. Your brain brings these two flat views together into one 3-D view. This is why you see the world in three dimensions.
Find the words from the box and circle them.
q s o L i d w b 2 d
d i M E N s i o N s
L M 3 N f L a T 3 N
T o p g w i d T h g
d E p T h s i o N 2
E w 2 h T 3 d M a h
Word Search
length2D
width3D
depthtop
solidbottom
dimensionsflat
3-D Movies
3. Connect each pair of corners with a slanted line.
2. Draw another square that overlaps the first square.
1. Draw a square
You can draw a 3-D box! Follow these steps.
Credits: top: © iStockphoto.com/Ryan Burke; center left: © iStockphoto.com/coloroftime; cubes: © iStockphoto.com/andres; bottom right: © iStockphoto.com/Srdjan Stamenkovic
A 3-D printer can do amazing new things. Think about other machines people use. Make a list of new things that one of these machines might do someday. Then write a story about life in the future.
