We’ve had two optical microscopes and a hand-held magnifier available to the kids. A small Bausch & Lomb (i.e. high quality optics) ‘scope we got off eBay for about $30, list price around $90, was the first purchase. It had a single 50X objective and the quality of the image was good. But it was small and fiddly to focus and the illumination was limited to indirect lighting. Plus we found that only our eldest could actually squint down the barrel and see anything. Our younger two (under 7 at the time) just couldn’t reliably see through the barrel. It takes a fair bit of concentration and mental ability to train your eyes to see down a single barrel. They tried the hand-covering-other-eye trick (since they couldn’t wink) but that didn’t seem to help much, and it just left them unbalanced as they leaned over the scope, covered one eye and tried to adjust the focus with the other hand. The whole endeavour was just exhausting for them and frustrating.

We have brought home the medical clinic scope on a number of occasions. It’s a professional quality scope with high magnification (suitable for micro-organisms like bacteria and yeasts) and an oil-immersion lens. Large, sturdy, great lighting. Our eldest saw a few interesting things with it, but the younger kids had the same “squinting down a tiny hole” challenges. Sometimes Noah (then 6) thought he could see something. Sophie (then 4) never did. The depth of field at high magnifications is negligible, so slide preparation has to be done properly (thin samples, maybe using a microtome, slide and cover slip, etc. or else just buying and using prepared slides). What happened was that the adult would spend 20 minutes in slide preparation, slide-gazing and fine-focusing, and then would get the kids to peek in and see what we’d found. It definitely didn’t maintain child-led enthusiasm!

We gave up on the medical scope (will use it again when the kids are older), packed away the little Bausch & Lomb and I bought an inexpensive hand-held magnifier (15X magnification, I believe) and they seemed to like that more. With that lower magnification it had a large depth of focus and it could be brought to the eye, rather than vice versa, so my then-6yo was able to use it reasonably well. Also, at low magnification, things bore more resemblance to their unmagnified images, and that somehow made the viewing “realer” and more exciting for the kids.

I still had microscope dreams for the kids, so I did a lot of reading about kids & scopes. I decided that if we could afford to be a microscope at some point, it would probably make the most sense to buy a high-quality binocular dissecting microscope (i.e. relatively low magnification, two barrels to look down for relaxed viewing, large depth of field, easy-to-use focusing knobs). But these ‘scopes are expensive. So we waited.

Then I stumbled across reviews and images from the Digital Blue. Debbie posted some of her kids’ images for me on a message board. I was really impressed. So we used Grandma’s Christmas-and-birthday-money-for-the-year to order one. We bought a slightly older version on sale and got it for about $50 (the best price I’ve seen lately is about $150). We’re really happy with it.

It has low to medium magnification (10X, 60X and 200X). The barrel can be removed so that, like a hand-held magnifier, it can be used to examine things you can’t easily fit on the stage — fingerprints, eyeballs, the winding on the strings of a violin, the surface of a rock, etc.. There is none of the exhausting squinting down the barrel — you’re looking at an image as big as your computer screen. At low magnification the depth of field is vast and focusing is dead easy. Medium magnification the kids can use easily with a bit of practice. “High” (i.e. 200X) magnification focusing is of course fussy (that’s just the nature of the physics) and it is difficult to get sharp images without doing real glass-and-coverslip slide preparation, but it is possible with patience. Using the scope is no longer a solitary taking-turns endeavour … three or four kids +/- adults can watch in real time as something leaps into focus. They can point on the screen (“what’s that?” or “move over this way”). The image is not inverted as in a regular scope, so moving around the image is easy and intuitive. We can capture images to save and share (later, with daddy, or with a friend, or to insert in another document like a website or newsletter). We can save video clips of little critters in motion. When you can retrieve and re-examine images, everything stays more real and present in your memory.

The microscope software installed beautifully in a minute or two with no hitches in both WindowsXP and W98. The microscope has proved sturdy enough for our use. I don’t worry about supervising, and sometimes the barrel gets treated a little roughly — no problems so far. It continues to interest the kids. While is does run through the computer, unless you are capturing and exporting images, you don’t have the sense while you’re using it that you’re “using the computer”. All the activity is at the microscope end, with the computer screen simply being a real-time video feed of what the scope is seeing. In other words, your hands can stay totally on the microscope and your specimens, and you don’t need to fuss with the mouse or keyboard except for, say, adjusting lighting off the “auto” setting, or viewing previously-captured images. Really I can’t say enough great things about this microscope and its developmental suitability for kids.

The above post was written 18 months ago and I stand by everything I wrote then. Our microscope is still functioning well. The QX3 we own has now been replaced on the market by the nearly-identical QX5. Oh, and in case you’re wondering, that’s a J-cloth in the image above, at 60X magnification.

Microscopes for kids

8 thoughts on “Microscopes for kids

  • June 16, 2007 at 10:08 pm

    I love your blog, especially since I think my little homeschooling family is moving in an unschooling direction, and your family is a fantastic example of how well it works. May I link to your blog? Here’s mine…


  • June 16, 2007 at 10:30 pm

    Sure, G, I’d be flattered. I’m reading through your blog in another window right now and really enjoying it. Thanks for the link!

  • June 17, 2007 at 7:22 am

    Awesome! We’ve never been happy with any magnifying device we’ve purchased so far adn am so glad to finally find one that seems to do what we’d like it to do. Do you, by chance, still have your old one and want to sell it?

    Love your blog, by the way. You live in a beautiful placce!! I’m so jealous!


  • June 17, 2007 at 8:20 am

    Jennifer, we actually only have the initial QX3 we bought. I wrote ambiguously; the company has replaced the QX3 with the newer model on the market. So no, we don’t have one to sell — sorry!

  • June 17, 2007 at 10:15 am

    Fantastic! I was also thinking about holding out for a good dissecting microscope, but you’re right, young kids can have trouble focusing down that barrel. I’m in BC as well, Vancouver actually…the digital blue site says that Toysrus carries their products, but my phone call there came up empty. May I ask where you ordered from?


  • June 17, 2007 at 10:34 am

    Hi Gillian, I honestly don’t remember where I ordered from. It was some little two-bit operation in the US, selling off overstock and discontinued items (at the time the QX3 was being replaced with the QX5, so I guess people were wanting to liquidate old stock). I know it’s been a problem for Canadians. At one point TigerDirect.ca was carrying it. I believe SpectrumEd.com also carries it, but at a higher price. If I get any leads, I’ll post another comment.

  • June 17, 2007 at 12:34 pm

    Hey, that’s the microscope we’ve been thinking of getting! Glad to hear you’re liking it so much. We’ve had a lot of the same issues with the kids using the microscope we already have, so I was looking specifically for something we could view on our monitor. Until I saw this one, the only ones I’d seen where cheap kids toy versions. 😛

    I’m wondering about the prices, though. You’re amazon.com link has it at $199.95 new. We found it at thinkgeek.com at $99.99

    As far as I can tell, both are in US dollars. Am I missing something?

    We’re already big fans of the thinkgeek website, so getting it there at a better price would be a nice bonus.

  • June 17, 2007 at 12:49 pm

    Kunoichi, I’m sure that price is correct. There seems to be a huge range in prices for this item. The only problem is that ThinkGeek is showing “not available at this time” on their site.

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