Wednesday, 15 February 2012

Marshmallow/Toothpick GeoPanes

Today I brought in heaps of marshmallows and toothpicks.   This activity works best if the marshmallows are a bit stale.  I opened the bags of marshmallows yesterday and left them out overnight so they would be more crunchy and stay in the toothpicks better.

We have been learning about 3-D shapes and have played with many of the solid 3-D shapes. Today I had the students build some of the 3-D
shapes they were familiar with such as the cube, square based pyramid, and rectangular prism.   We spent a lot of time talking about the properties of prisms and pyramids.   I was very pleased to hear the students use the term congruent to describe prisms as having "two congruent bases".

I have taught this lesson many times and it is always a hit with the students.  At the end of the lesson I drew each 3-D figure on the board and had the students use a felt marker to mark the marshmallows and toothpicks as they counted the number of vertices (corners) and edges each of the shapes had.   I suggested they mark them with felts because sometimes I have found in the past that students tend to make simple mistakes counting and re-counting the vertices.

Many of the students explored other prisms such as this pentagonal prism, octagonal prism, and the hexagonal prism.  Another example of this lesson can be found on a mentor's blog HERE.


  1. Quality articles or reviews is the main to attract the people to go
    to see the site, that's what this web site is providing.

    Feel free to visit my weblog ... online stopwatch countdown.

  2. Heya i'm for the first time here. I came across this board and I find It really useful & it helped me out much. I hope to give something back and aid others like you aided me.

    Also visit my weblog ... Look At This

  3. I all the time used to read paragraph in news
    papers but now as I am a user of internet so from now I
    am using net for articles, thanks to web.

    Check out my web site: related site

  4. Hiya! I know this is kinda off topic however , I'd figured I'd ask.
    Would you be interested in trading links or maybe guest
    authoring a blog article or vice-versa? My blog covers a lot of the same topics as yours and I believe we could greatly benefit from each
    other. If you happen to be interested feel free to shoot
    me an email. I look forward to hearing from you! Excellent blog by the way!

    Take a look at my site :: Christian Louboutin Outlet

  5. Currently it sounds like Expression Engine is the top blogging platform available right now.
    (from what I've read) Is that what you are using on your blog?

    my weblog :: Sac Guess

  6. Your style is really unique compared to other people I have read stuff from.
    Many thanks for posting when you have the opportunity,
    Guess I will just book mark this blog.

    My web page :: Louis Vuitton Purses

  7. I just couldn't depart your site before suggesting that I extremely enjoyed the usual information a person provide on your visitors? Is going to be back continuously in order to check out new posts

    Look into my blog: Sac Louis Vuitton Pas Cher

  8. Excellent post however , I was wondering if you could write a litte
    more on this subject? I'd be very thankful if you could elaborate a little bit more. Bless you!

    my page: Air Max Femme