第五周视频6

发布人：王卫肖发布时间：2014-05-12 12:00:46

 

>> On the infrastructure and hardware

front, we're actually not going to go too

deep, because the reality is that a lot of

these decisions are common sense.

在基础设施和硬件方面，我们确实不用太深入，因为现实情况是大部分的设计都是普遍的常识。

And the reality on the field is actually

changing every six to 12 months.

So we just want to give you a few tips as

you think about these decisions.

这个领域的现实每6-12个月发生着变化，因此，在你们思考这些设计时，我们只想给出一些小提示。

>> Yeah, and the first tip is that the

design of

your program is going to influence the

kind of hardware you need.

第一个提示就是程序设计会影响你需要的硬件种类。

If you're going for an ambitious flex

program, where kids spend a large

portion of each day at their own time and

choice, when they're online,

you're going to probably need one to one.

假如要做一个较大的项目程序，在这项目中，孩子需要花费较多的时间，那他们在线的时候，你可能就要做到一对一。

And if you go to a station rotation model,

in which

there's three stations, probably need one

computer for each three students.

But the model dictates your tech needs.

假如你要进行一个身份轮换的模式，在这个模式中需要三个身份，那么就可能没三个人需要一台电脑，这种模式就需要你的技术支持。

 

>> Now, either way on that though,

you're going to need a lot of bandwidth.         

And our friends at the education

superhighway recommend that

you have 100 megabits per second, for

every 1,000 students.不管哪种方式，你都需要宽带。 信息教育界的朋友推荐每1000学生需要每秒100兆的速度。

And that seems like a pretty good

recommendation, that if

you don't have, you're going to choke your

blended learning model. 这是非常好的建议，否则的话，它将对你的混合型学习模式造成阻碍。

 

>> Right, and if you take

a look at the education superhighway

website,

they have a nice testing feature, so you

can actually see how much you have in your

setting that you're in, doing education.

but the network is usually the place where

we see most of the problems. Either not enough bandwidth coming in, or

even just bad internal configuration.

如果你看一下关于教育的信息网站，他们拥有非常好的测试特点，你确实能够发现你所需要的设备花费，但是我们发现较多问题的还是网络方面，或者是宽带问题，也可能是内部构造问题。

So we're going to pop up a couple

resources that can help

you just start thinking about designing

good network settings for educational

venues.

我们给出一些资源，这些资源可以帮你开始思考为教育领域设计好的网络设备。

>> Now, of course you have to think                             

about your charging, your outlets, and

security, as you dive into this.

当然，开始投入这件事时，你需要思考电源、充电方式及安全性。

And we're seeing a lot of schools move away from this fixed model of desktop computers chained to an outlet with an Ethernet cord, and much more toward using laptops and tablets with charging stations that allow you to get power for an entire day.

我们发现很多学校不局限于台式电脑的固定形式，更多的倾向于可以充电的笔记本电脑，这些电脑可以保证一整天的电量使用。

And we would note that having power for an entire day on a device is really a critical requirement to do these sorts of fun -learning models.

我们可能注意到设备的全天电源供应对于这种乐趣性学习模式是非常重要的条件。

>> And

schools think about charging in a couple

different ways.

校方想了几种不同的充电方式。

If they keep the devices at school, they

usually have

a system where every student plugs in

before they go.

And the teacher ensures the devices are

fully charged when kids arrive.

如果把这些设备放在学校，学生可以随时找到充电插头，随时充电。

同时，教师确保学生使用前电量是满的。

If you send the students home with the

devices, you have to build in a

routine that requires them to do the

charging, and bring back the devices fully

charged.

如果学生把这些设备带回家，你就要建立常规要求，要求学生充电，带回时保证电量充足。

Just trusting students to do this on their

own, probably not going to work out for

you.

And you might even need a backup, so set

up

a station in the room where there's a

couple charging

outlets set up, and students can work

there, in case those

two kids forget, and don't bring a charged

device to school.

相信学生能够自己做好这些，而不需要你做额外的工作。当然，你可能需要备用电源，所以备用几个电源插座，防止有忘记充电的同学。

>> On the device front, your choice is

really between desktop, laptop, or tablet.

在设备方面，你可以选择台式电脑、笔记本或平板电脑。

Now, Brian and I aren't here to endorse a

particular product, and we don't

have any allegiances or compensation perse from any of the folks out there.

But what we're seeing is that schools are

generally moving toward adopting Google

Chromebooks right now.

我和Brian并不是宣传某种特定的产品，也不会从中或得补偿。但是据我们所知，目前学校通常会选择Google的 Chrome books上网本。

There have

been a bunch of market surveys as well as

in our blended

learning universe, we're seeing this has

become a clear trend right now.

据一系列的市场调查发现，这已经成为一种趋势。

We think that the reason for this is that

Chrome books are

significantly less expensive than a lot of

the other options out there.

我们认为这主要是因为Chrome books较之其他的选择不是很昂贵。

They're often just $250 a pop, and also

they're

far easier to manage in a blended learning

environment.

Chrome books通常仅仅$250,另外在混合型学习的环境中，他们还很易于操作。

They charge for a full day so you don't

have to constantly figure out

where you're going to re-charge the, a,

computer, and because they in a

cloud,

they're really interchangeable.

You can do your work, store it in the

cloud, and

then jump on another Chromebook and leave

just where you left off.它的电量可以使用一整天，所以你不用特意想着找重新充电的地方，另外它运转着一个云盘，具有互换性，你可以把工作存储在云盘里，在其他的Chromebook电脑中也可以使用。

And so they're really user-friendly in

these blended learning environments right

now.目前，它能够很好地为混合型学习环境服务。

>> Now the one downside to Chrome books

is that you generally

need a wireless connection for them to

have their full functionality.

So if you're in a school that has good

wireless, that can be a great option.

Chrome books的一个缺点是你通常需要无线连接来实现它的全部功能。所以，如果学校有较好的无线，这就是一个很好的选择。

But do make sure that the software you

want to use is Chromebook-compatible.

And this is only an issue

if it's not web-based.

If it can be brought on a browser, you

should be fine on the Chromebooks.

但是你要确保有所用的软件是和Chrome books相兼容的。如果没有网络基础，这就成问题了。如果可以使用浏览器，那就更好了。

>> Now, we also hear a lot of

schools moving toward iPads, and iPads

certainly have

a cool factor and there's also a lot to

like about a tablet form for computing.

现在，据说许多学校使用ipad，它确实有很多不错的功能。

Reading is a lot easier on these devices,

and for younger students a, it's a lot more

intuitive, to use

your finger and just swipe along on a

device, rather

than trying to figure out a track pad on a

laptop.

使用这些设备，阅读变得简单了很多。对于知识年龄比较小的学生，触屏比笔记本电脑更具直观性。

In addition, a lot of the,

apps that are emerging are only available

for mobile devices, which

means that you'll need a tablet if you

want to use those.

另外，目前发展的许多应用只能在移动设备上使用，这就说明如果你想使用这些资源，你需要平板电脑。

>> People are very excited about

tablets, and I like tablets too, and

I've' em, I've seen, I've seen tablets

used best with the youngest kids.

Kinders, first, second grade.

in my schools and where I've seen also a

lot

is usually around third grade and up and

even second

grade and up.

人们对平板电脑的使用都很兴奋，我也喜欢。我见过小孩子用笔记本用的最好。如我们学校1/2年级孩子，我还见过许多2、3年级以上的学生都使用的不错。

 

Teachers want a physically keyboard.

it's easier for the kids to, to start

typing

out whole sentences, paragraphs and essays

and papers and reports.

教师们想要完整的键盘，它可以简单的让学生们开始打出完整的句子、段落、随笔、论文和报告。

>> So do think about the think about

the cost and whether tablets actually cost

more

than having a computer, but then also do

think about this keyboard question,

because if students

are producing a significant amount of

content, generally

schools are telling us that, that keyboard

is

still a necessity because it can actually

get

really hard to think about typing a paper

on your touchscreen.

思考一下平板电脑的费用，它是否比普通电脑花费更高，另外还需思考键盘问题。毕竟学生学过大量内容有了思考之后，键盘就变得很有必要，毕竟使用触屏很难完成一篇文章。

And if you get one of those flip keyboard

cases to go with their tablet?

你是否会给平板电脑安装相应的键盘设备。

At some point you're creating a more

expensive version of

what a Chromebook already has at the $250

price point.

一些人会认为你已经在$250 Chromebook上添加了更昂贵的形式。

 

>> One other thing to think about, is how you're going to manage the devices across your school.另外我们要考虑的是在学校你将怎样管理这些设备。

And Google's actually done a really good job here with the Chromebooks by providing a central device management system that allows you as an administrator or your Tech lead to push out updates to all devices, or sync

settings, or bookmarks, and so forth, which makes it really easy and seamless to update.

谷歌在Chromebooks中确实做得很好，他提供了中央设备管理系统，它允许你作为管理者对所有设备进行更新、同步设定、记录，这使数据更新变得简单准确。

 

>> Schools are often tempted to buy these really low-cost netbook or cheap PCs because the initial purchase price looks so attractive, but you forget how much time and energy it takes to maintain these machines.

学校通常会购买价格低廉的上网本或电脑，因为低廉购买的价格很诱人，但是你却往往忽视了后期的维护费用，你需要换花更多的时间和精力来维护这些设备，

Every time there's a new software update or you install software, your tech team has to go computer by computer by computer to update these.

Which is a maddening process if you're talking about 30, 100, 400 students in a school setting.

每次需要更新软件时，技术人员都需要一台电脑一台电脑进行更新，如果学校学生多的话，这会是一个很很繁琐的过程。

 

>> So it's really important to think about all of these costs in repair and servicing. As you're considering which devices to buy. Really, just think about it as a total cost of ownership.

所以在决定买哪种设备时，把维修和服务等方面的费用都考虑进去时很有必要的。

And there we also think that the nod goes

to Google Chromebooks, because they're

just frankly a lot

less expensive, when you look at the total

cost

you'll put in over the life of a device.

我们认为Chromebooks在总体价格上较为合适的一种设备。

>> Now there are certain tasks that still require more of a hard, heavy duty computer. If you're running autocad or you're doing

real video editing, you might need a dedicated room or set of computers that can run Photoshop and have, you know, full computing power, but if you don't, that's where we think there's some better options than the old fashioned large desktops.

某些认为需要功能强大的电脑。如果你要做三维设计或影像编辑，那么你就需要专业的电脑设备，这些设备需要具有图像处理功能，完整的电脑运作能力。如果不需要这些，使用一些较好配置的电脑即可。

 

>> Yeah,

we, have a school that we fund, Alpha

public

schools that does some really neat work

with blended learning.

我们资助的学校Alpha public school在混合型学习中做的很好。

And one of their staff people who's in

charge of

innovation there, named Charity Eyre, just

wrote up a very

nice piece on EdSurge about the little

things of, how

do you set up passwords, and how do you

manage accounts.

这个学校负责创新的职员Charity Eyre在EdSurge上写了关于怎样设置密码及怎样管理账户的文章。

（EdSurge提供教育技术方面的独立信息内容提供商，edSurge本身更多围绕教育技术内容，提供了如新型教育技术产品的点评、围绕整个教育产业的组织、学校等方面的信息内容。）

It's in the weeds, but if you really want to understand what this looks like, we'll put a link to it in the resources section, and it's definitely worth a read.

如果你想了解这方面的内容，我们会把它链接到可选资源中，它肯定值得一读。