The fence question

So I assigned the classic fence-against-the-river question to my group (you have 200m of fencing, what's the largest rectangular area you can contain where one side is not needed against the river). We had just started quadratics so they have no real background in it at all. One student solved it thusly:

1) He made a table of values for a few fences:

Then, he turned to Maple. We had done a unit on linear systems and did a few questions on finding lines of best fit... so he used the Curve Fitting Tool to find the best fit parabola, then found the vertex of the parabola and hence the best area.

Then he found the vertex of the parabola by zooming:

Almost every other student did it the traditional way of setting up the equation, graphing and finding the vertex. I thought it was a nice bit of synthesis from the previous unit to approach it in this fashion!

Comments

Desmos, OneNote & Replay

So using Desmos activities are a great way to encourage exploration and discussion in math class -- if you haven't tried them, I encourage it. They're collected at https://teacher.desmos.com/ But ... Desmos doesn't give you quite enough. It doesn't have a way of capturing the work that the student does within their space, and it doesn't allow for annotation of class contributions as we come together to discuss. Well, not surprisingly, OneNote comes to the rescue. Using the Windows shortcut Windows-Shift-S it is really quick to snag the Desmos screen and pop it into a waiting OneNote page. From there, we can grab our pen and (using wireless projection) talk about what all the different responses mean and where to go from there. (An aside : one of the nice features of Desmos activities are the way you can hit PAUSE and it will pause all the screens of the students working. I always give them a heads up "10 seconds to pause..." and it's...

So you want to hack your OneNote Class Notebook

Taking a brief break from my "Getting Started with OneNote Class Notebook" series (you can start that one here )... This is a little advanced so if you're not comfortable setting permissions inside of Office365 you may want to avoid this. Or set up a Class Notebook to play with so that it doesn't affect any existing Class Notebooks. Yeah, the latter is a good option. One of the great powers of OneNote is that you can do some really neat permissioning of the Section Tabs. When the Notebook is created, of course, it gives you an "open permissions" on the Collaboration Space and student-read-only on the Content Library. And then each student space is wide open to each individual student. But we've found that occasionally you want to mix up the permissions a little. For example, you could create a space in a student section for your private notes that the student couldn't see, or maybe you want a tab in the Collaboration Space that students cou...

Making your own font

Slid in amongst all the announcements for Ignite, Microsoft's big conference in September, as a tool that I thought was quite cool. Not original, since similar things have existed elsewhere & when, but a nice option nevertheless. Microsoft's Font Maker allows you to create your own font using digital ink. You get all 26 characters, numbers and punctuation (for English languages) on which you draw your font for each character. (For me, it's the first 128 printable characters out of the ASCII table!) Using your #digitalink pen, you draw out what you want each character to look like. I just quickly wrote out the alphabet as you can see below: You don't have to do it all at once and you can keep working on your Font as you go; it saves as a JSON Project File which means you can send these between collaborators. Once you have your font done, you can adjust the spacing between characters & words to make it look good (it uses a scene from Hamlet -- I...

Continuous formation

Search This Blog