# ThingLink with Geometry 3-D Topics

Here’s a tidbit I created for students to reference during our 3-D geometry unit.  I had some trouble finding iPad-friendly links to interactive resources 🙁 because so many are flash-based.  Nevertheless, I really like the way ThingLink handles video links!  Very cool!

I plan to have students analyze the way the formula is presented for the volume of a sphere… syntax when typing fractions without an equation editor may change mathematics unintentionally!  Rather than omit the resource, I think having a meaningful discussion about the formula might be mathematically rich and worthwhile.

Feel free to use or share!

Additionally, here are some graphics I created that help students “break down” the formulas to find the lateral and total surface areas of cylinders and prisms.  Enjoy!

Here are some great ideas!

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### 3 Responses to ThingLink with Geometry 3-D Topics

1. Caryn says:

Hi Cathy,

I love your ThingLinks! You’re so creative. I want to make a similar ThingLink and like the way the edges are torn around your pictures. How do you get that effect? It really makes it “pop” off the background.

Caryn Trautz

2. Cathy Yenca says:

Hi Caryn!
Thanks so much for stopping by! I create the background image using a slide from Keynote (Mac’s “PowerPoint” if you will). There is an option in Keynote to put a “stroke” around an image, and there are lots and lots of options, including making the edges look ripped. If you create any ThingLinks, please share – I’d love to see them! Working on an iPad-friendly ThingLink now for topics on quadratics 🙂 Keep an eye out for it!

3. Caryn says:

Cathy,

I found what you were talking about, thanks! The ThinkLink I’m thinking of is going to be similar to yours, but I want the students to do the investigation themselves to find the definitions and formulas and fill them in on a worksheet, instead of me giving them the formulas in their notes first. Can the links be to a PDF file for them to annotate on, or are they only for website links?

Caryn

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