Wednesday, May 9, 2012

Adventures in 3d

In Math, we are learning about 3d shapes. In a drawing experiment one morning, we discovered that 3d shapes look different depending on what your view is.

For example, if you look at this shape from the front, you can see a house. The house is made of a triangular prism sitting on top of a rectangular prism. There is a cylinder-shaped window in the middle of the rectangular prism.

front view
But from the side, the house suddenly looks like a long, skinny rectangle.

side view

 And from the top, the roof just looks like a short rectangle.

top view
That's why when we drew this shape, every one of our drawings was unique - we were all looking at the house from a different point of view!

click on the photo to see our drawings up close

In Art, we built 3d solids out of paper and used geometric designs to decorate their faces and curved surfaces. Can you take a look at different views of these shapes and guess what solid each Division 2 student is holding?

What shape is this student holding?
bottom view
side view










top view


What shape is this student holding?
bottom view
side view

top view

unicorn view
What shape is this student holding? 

side view
top view


A paper map that is used to build a solid 3d shape is called a net. You can use the net of an object as a clue to help you figure out what 3d object it will be once it's built. All you have to do is look at the faces: how many faces are there and what shape are they? Riannon built the 3d solid below. Can you tell from looking at its faces what kind of 3d object it is?






Division 2's 3d solids

Leave us a comment: 


What 3d shape is your favourite? How many faces does it have? 


Can you find any objects in your house that are the same shape as these 3d objects?

23 comments:

  1. Dear Div.2

    I like all the 3d shapes everyone made.

    Friend Brandon

    ReplyDelete
    Replies
    1. This comment has been removed by a blog administrator.

      Delete
  2. me to Brandon
    it wAs fun

    LOVE JAYLEE

    ReplyDelete
  3. Dear Div.2

    Cole is holding a pyamid. Preston is holding cone. Rain is holding a cone Riannan is holding a pyamid, a cube, and a trianglur prism.

    Your friend Brandon

    ReplyDelete
    Replies
    1. Great job, Brandon! Riannon is holding one 3d solid, and showing off all its faces. Can you think of which 3d solid has 5 faces - 3 square and 2 triangular?

      Your teacher,

      Miss. OC

      Delete
  4. Dear div2,

    my favourite 3d shape is the cube. It has 6 faces.

    From Preston
















    From Preston

    ReplyDelete
  5. Dear div2
    All of the 3d shapes are cool I like all of them.




    From Brooke-lynne

    ReplyDelete
  6. @ div.2
    Do you guys like the pyramid and the cube?
    I like the pyramid and the cube and the cylinder.
    Have you ever found a 3D shape in any of your houses .
    I found a sphere and a cylinder thats all I found.

    roses are red.

    ReplyDelete
    Replies
    1. @ Roses,

      I found a very large rectangular prism - it's my fridge! I also found a lot of cylinders in my pantry - they're cans of soup! I also noticed that my jewelry box is a cube.

      What object did you find at home that were spheres and cylinders?

      Miss. OC

      Delete
  7. Dear jeven,
    Your design looks cool and awesome.

    ReplyDelete
  8. @ Miss OC

    Preston has a cone.


    From Ebony

    ReplyDelete
    Replies
    1. @Ebony

      You're right! How did you figure it out?

      ~Miss. OC~

      Delete
  9. @ Miss OC

    I like the unicorn view.


    From Jolenqe

    ReplyDelete
  10. Dear Miss.OC

    I like all of the shape's.

    Jevan

    ReplyDelete
  11. Dear miss.OC.

    My favrit shapes are cube and a cone.
    My favourite shapes at home is a spear.


    from. Alexis

    ReplyDelete
    Replies
    1. @Alexis,

      A spear is a really neat 3d shape! What material are your spears made of?

      Miss. OC

      Delete
  12. Dear Cole,

    Your piramid is cool.

    love Jaylee

    ReplyDelete
  13. @Alexis

    My favourite shape was the cone.


    from Brooke-lynne

    ReplyDelete
  14. DEAR Preston your shape is a cone. It is cool.

    From James

    ReplyDelete
  15. My favourite shape is pyramid.

    From Lennyia

    ReplyDelete
  16. @LENNYIA,

    What is your favourite shape!!!!!?

    from Rain

    ReplyDelete
  17. I am so excited to have stumbled onto this class blog. It's awesome! I particularly like this post because my grade one students in Surrey, BC, Canada were learning about 3D solids too. While we didn't create with nets, we did locate many 3D objects around our classroom, out on our playground, and in our homes. I love the different points of view you are showing too. I'm not sure I can chose one favourite 3D shape though. Keep up your fantastic learning. I'll have to check back again before the school year is over. From Ms. Lirenman

    ReplyDelete

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