时间:2019-01-25 作者:英语课 分类:VOA标准英语2010年(二月)


英语课

Time again for our Website of the Week, when we showcase interesting and innovative 1 online destinations.


This time it's an educational site where principles of physics are illustrated 2 with interactive 3 animated 4 experiments that you can perform on your own computer.




"The PhET website is a collection of 85 simulations for teaching and learning science. So our main goal is to help students better understand the science of the world around them, but instead of telling students how something works, our simulations let them discover important science concepts for themselves and really learn and engage through scientist-like exploration," says Kathy Perkins.


Perkins is co-director of the Physics Education Technology, or PhET Interactive Simulations website.


Despite the name, the site includes animated simulations in biology, chemistry, and other disciplines, as well as physics. You can build your own solar system, model the hydrogen atom, or explore the properties of a gas as you change its temperature and other variables.


Another simulation allows you to design and modify a simple electrical circuit.


"So when you open up, you can drag out wires and batteries and bulbs," explains Perkins. "And as you connect them, as soon as you complete a circuit, you'll see the light bulb light up and the electrons shown in the wires circulate around the circuit."


The simulations look like entertainment, but Perkins says the design of each has been tested for its educational value.


"And then we do user testing with students, to ensure that the user interface 5 is easy to use, and that the visual representation and the controls we include in the simulation actually leads to a correct interpretation 6 of the underlying 7 science."


The simulations can be used in the classroom, and the site has materials to help teachers make best use of it. Or you can just run the sims and learn by doing online at phet.colorado.edu, or visit our site, VOAnews.com, for the link to this and hundreds of other Websites of the Week. 


 



adj.革新的,新颖的,富有革新精神的
  • Discover an innovative way of marketing.发现一个创新的营销方式。
  • He was one of the most creative and innovative engineers of his generation.他是他那代人当中最富创造性与革新精神的工程师之一。
adj.相互作用的,互相影响的,(电脑)交互的
  • The psychotherapy is carried out in small interactive groups.这种心理治疗是在互动的小组之间进行的。
  • This will make videogames more interactive than ever.这将使电子游戏的互动性更胜以往。
adj.生气勃勃的,活跃的,愉快的
  • His observations gave rise to an animated and lively discussion.他的言论引起了一场气氛热烈而活跃的讨论。
  • We had an animated discussion over current events last evening.昨天晚上我们热烈地讨论时事。
n.接合部位,分界面;v.(使)互相联系
  • My computer has a network interface,which allows me to get to other computers.我的计算机有网络接口可以与其它计算机连在一起。
  • This program has perspicuous interface and extensive application. 该程序界面明了,适用范围广。
n.解释,说明,描述;艺术处理
  • His statement admits of one interpretation only.他的话只有一种解释。
  • Analysis and interpretation is a very personal thing.分析与说明是个很主观的事情。
adj.在下面的,含蓄的,潜在的
  • The underlying theme of the novel is very serious.小说隐含的主题是十分严肃的。
  • This word has its underlying meaning.这个单词有它潜在的含义。
学英语单词
abbet
AC two element two position relay
acoustic phase lag
adjustment of ignition
aluminium sulfate, aluminium sulphate
araboascorbie acid
asets
baculitid
Bauer's method staining
be preoccupied with
Bengtsfors
Blangslev
bradstone
Bromylum
bumpy
burruchaga
cast resin
charangos
chemical engine hose
chomped
cockling
completely convex function
control server
dacor
diaphragm logic element
distillation trap
elapid snakes
ethyl active amyl ether
fallback mode
fark
full-time modulation
funnel webs
get the word
haifa (hefa )
Hargraves'cell
Harper, James
horizontal centrifugal pump
horizontal girder
HRO
initial start - up
interior focusing lens
interpley
Jabukovac
jacking around
Kos'yu
Kums
layer of oxidem
lepiota
menprise
miqueliana
molecular sphere of action
Monforte d'Alba
Murav'yëvka
neuroscientist
noble bottle-tree
noncase
nonsuches
occultation of statellites
octree
opportunity cost value
paracheirodons
pawpaw
phase switch
phyric
plaited packing
plomestane
pluggy
pneumatic hydraulic
polycarpa
potential and current transformator
primary adhesion
quasi-normal
radio-frequency power loss
random access programming
remotely-controlled railway trains
rockcut
rotating-crystal pattern
roughing-roll
seedling growth
sigmate
sodium perthiocarbonate
solar gas dynamics
staphrlagra
stromatosis
sulfamethazole
synchronising torque
t-snap receptor
tapt
telite
textured suface glass bead
the nasdaq
thyrsiflorus
Tisza River
tribolium confusum jacquelin deval
tripropyl
trust and investment
turns step down ratio
various combination
wax-polishing machine
weapons of offence
world wide natural disaster warning system
z alloy