Show Me The Money

I’ve posted about finding royalty- and copyright-free images on line before.  In this post, I’d like to share an often overlooked source: the U.S. Government.  Many government departments have images in the public domain, which usually means that teachers can use them in presentations, classroom activities, and almost any not-for-profit ways you can imagine.  Of course, there are exceptions, so be sure to read the fine print.

The U.S. Mint

The Mint publishes some very nice images of the money it produces including coins commemorating states, presidents, first ladies, national parks, and significant historical events.  Most are available for free download, though a few are copyrighted (such as the Sacagawea dollar coin).  There are also a few anti-counterfeiting restrictions on reproducing paper money, so be sure to read the fine print on the website.

NASA

The National Aeronautics and Space Administration has some amazing copyright-free images and videos available.  Whether you are looking for images of astronauts, rockets or other spacecraft, or images of outerspace, the NASA website has you covered.  Some of the images include those from the Hubble Telescope which has captured extraterrestrial images for over a decade.  There are lots of science- and engineering-related images, and the website makes it easy to search for them.

CDC

You might not ordinarily think to look on the website for the Center for Disease Control and Prevention, but but the Public Health Image Library has lots of interesting stock images available, related to topics such as home safety, personal hygiene, agriculture, child safety and more.  Of course, you’ll also find lots of images of bacteria, microscopic pests, and other diseases, some of which may not be suitable for children.

More

For links to photos from more U.S. Government photos and images, visit the USA.gov website.  You will find links to images from lots of other departments related to agriculture, the environment, defense, safety, science and technology and others.  In essence, these images are “free” because you’ve paid for them with your taxes.  So, don’t hesitate to take a look and use them if you need to.

Optical Illusions

We’ve all seen optical illusions before.  Many of them, like the Ames Room above, take advantage of the flattening effect of the still camera, which only captures images from a single perspective.  But part of the fun is moving around to a different vantage point, which reveals how the eye is tricked.

Brusspup is an artist who has a YouTube channel that reveals optical illusions that he creates.  These videos offer the best of both worlds because the viewer can see both the illusion and how the trick is achieved.  Some examples are below.

How can these be used in the classroom?  Optical illusions are almost universally engaging.  Beginning with a still image of the illusion (or by pausing the video at that point,) students could be challenged to express how the illusion is created.  The class could then watch the video to see the solution.  This could be a fun and challenging way for students to formulate hypotheses and think critically.

Alternatively, students could be directed to the YouTube channel and asked to find their favorite illusion.  They could then be assigned the task of describing the illusion (both the effect and how it was achieved) in a presentation or in writing.  Depending on the level of the students, breaking down the task into step by step pieces would also be a good test of their English.

There are lots of other ways to use these videos.  Whether they are incorporated into a classroom activity or just viewed as an informal warm-up activity, they are sure to get your students talking.

Top 5 Technologies I Should Be Using

Last week, I listed the top 5 technologies that you should be using if you are an ESL teacher in 2010.  Today, I present the list of the next 5 technologies I need to explore and possibly add to my bag of tricks.  If you have experience with them, leave your opinions, suggestions, and tips in the comments.  Ladies and gentlemen, I give you the (near) future:

1. Google Wave – Occasionally billed as the Future Of Email, Wave combines email, IM, and the collaborative parts of Google Docs.  Watch the full Google demo video or the lower resolution abridged version to get the idea.  This is one of those really cool technologies that leaves you asking, “So what do I do with it?”  I hope to have answers to that question soon.

2. Zorap – Like Wave, Zorap combines several disparate elements into one collaborative space.  From what I’ve seen, a space can be set up for many users quickly and easily.  That space can then be used for audio, video, and text conversations and files and documents can be shared to the group.  See the demo for more.  For a free application, it integrates a surprising number of interesting options for remote learning.

3. Ning – A social network akin to Facebook, but it’s not Facebook.  There are many existing nings for topic areas such as The English Companion Ning (“Where English teachers go to help each other”) and Classroom 2.0 (“the social network for those interested in Web 2.0 and Social Media in education”).  Plus, you can create a Ning for a topic that you like or a specific group of people, like the students in your class.  Because it’s a closed system, Ning may be more useful to anyone who can’t (or doesn’t want to) use Facebook or other social networks with their students.

4. Screenr – A free, web-based screen recorder.  Just drag a frame over the part of your screen you want to capture and Screenr will record a video of what happens inside that frame until you tell it to stop.  Great for creating demonstration videos or capturing a presentation.

5. Prezi – When I first saw Prezi, I thought it was just another slide sharing application.  Since then, I’ve seen some slick, remotely controlled presentations that use Prezi to great effect.  One of the best features is the ability to smoothly zoom in and out on portions of the presentation.  One large document can contain everything from headings to footnotes with each part zooming and snapping into place on the screen as it is selected.  This works equally well if the presenter is guiding the presentation or if an individual wants to explore it on his own.  For example, take a look at this Grammar Review Prezi.  You can use the arrows to go forward and back within the presentation, but you can also take control by zooming in and out, dragging the page around, and clicking on the text to zoom to a specific point.  Once you get used to this style of navigation (or, rather, every style of navigation simultaneously) many interesting ways to structure and organize information become possible.

Bonus: Sikuli – I’ve used applications with macros before, but Sikuli’s approach is unique because it can create a macro for any application using your computers GUI.  Think that sounds geeky?  Then the demonstration video might also be a little intimidating.  The gist of it is, you can automate almost any multi-step task on your computer, just by writing a simple script for Sikuli to follow.  While I can’t think of any tasks that are repetitive enough that I’d actually save time by learning how to use Sikuli (and, frankly, I’d rather play Bejeweled myself, thank you very much), the potential of this application is intriguing.