Download solid figure - Math-4326

Describe, model, draw & classify shapes;
 Investigate & predict the results of
combining, subdividing & changing
shapes;
 Develop spatial sense;
 Relate geometric ideas to number &
measurement ideas;
 Recognize and appreciate geometry in
their world.

Geometry is the mathematics of the
properties and relationships of points, lines,
angles, surfaces, and solids.
 In geometry, a plane is a 2-dimensional
surface that is perfectly flat and infinitely
large.
 Plane figures are named according to the
number, size, and position of their sides and
angles. For example, a polygon is a closed
figure whose sides are all line segments.

Polygons
Not Polygons

Make a list of all the polygons
› Provide one or more pictures for each

When we say solid figure, we don’t
mean solid in the usual sense; we mean
the figure is not flat, it’s threedimensional.
edge
face
base
vertex
Solid figures include prisms, pyramids,
cylinders, cones and spheres. There are several
different types of prisms and pyramids, and
they are named for their bases.
Make a Tangram Square
 Use all seven pieces of the Tangram to
make a square with no gaps or overlaps.
 Once you have completed your square,
cover it up so that the people around
you may continue to “enjoy” the
challenge.


Grandfather Tang’s Story make Tangram
animals.

Composing and decomposing with
Tangrams – share Tangram Polygon
Challenge

If students discuss kinds of sides, talk about “square
angles” or corners and use color tiles to check for
them. Have students make Example/Non-example
sheets to check for understanding.

Eventually name shapes, use “Shape Sorting Mat” to
help with this. Have students make Example/Nonexample sheets to check for understanding.

If students discuss parallel sides, use dowel rods to
check for them. Use parallel side sort to reinforce this
concept. Have students make Example/Nonexample sheets to check for understanding.
1. A square is not a rectangle.
We teach primary students that there are 4
basic shapes—circles, triangles, rectangles
and squares.
And, in math, we have no diamond! It’s
either a square or a rhombus.

Draw a right Triangle 
Common regular shapes aren't recognized
for what they are unless they're upright.