Math Journal Sundays
Anyhow, for this unit we are going to study the properties, nets, volume and surface area for the different 3D shapes my students are responsible for learning. Tuesday I had the students working in pairs and small groups to complete a diagnostic place mat activity where they wrote down pictures, definitions, examples, and non-examples (Frayer model) for 3D shapes. They are using this sheet as a title page for their unit. Wednesday we moved on to cubes and rectangular prisms.
I had students draw a net for a cube that had 4 cm x 4 cm faces. Most of them remembered how to do this, and for the ones that were having difficulty, I showed them a model of a net for a cube. (I have these fantastic large 3D shapes that have plastic removable nets inside them - LOVE them). I was also modelling how to draw it under the elmo. After the nets were drawn, we recorded different characteristics for the cube on each of the faces: faces, edges, vertices, other net views, surface area and volume, and a sketch). We then used the formula to find the volume and surface area of the net we had drawn. We wrote this down on the paper beside the foldable. We only glued one face to the paper (the one where "other net shapes" was written), so we could still "fold" our net into the 3D shape. The students thought this was pretty neat.
I plan to have students continue to work on these this week - we will make a square-based pyramid, a triangular prism, and a triangular pyramid. Come back next week to see the new pics.
Happy, Happy Sunday!!!