Page 177 - NUMINO TG_5A
P. 177
Activity 1 Find the Hidden Cubes
jOb ective Study how to find hidden cubes.
1. Textbook Instructions Activity 1 Find the Hidden Cubes
This unit builds upon the information 1 . Find the number of stacked cubes.
presented in the last lesson, which involved Have students count the cubes including ones that are not visible.
counting cubes, including those that were a. b.
hidden from view. Have students continue to
count the cubes, including the hidden ones. 6 cubes 9 cubes
c. d.
1. Have students count the cubes in each
figure. 6 cubes 8 cubes
Which figures have cubes that are hidden e. f.
from view? D, e, and f.
How can you tell if a cube is hidden from
view? Look at the number of rows coming
into or going out of the page. If there is more
than one row of cubes stacked on or adjacent
to each other, then cubes in back or beneath
are hidden. This happens when cubes are
three-dimensional.
1d. One cube is hidden by a cube in front of it
and another on top of it.
7 cubes 12 cubes
98
2. Build Understanding Face Vertex
Edge
Advanced students can build vocabulary by learning the names of various
parts of a cube:
Face: a flat side of the cube
Edge: where two faces meet
Vertex: where three or more faces meet
A cube has six faces, twelve edges and eight vertices.
160 NUMINO Teacher s Guide
jOb ective Study how to find hidden cubes.
1. Textbook Instructions Activity 1 Find the Hidden Cubes
This unit builds upon the information 1 . Find the number of stacked cubes.
presented in the last lesson, which involved Have students count the cubes including ones that are not visible.
counting cubes, including those that were a. b.
hidden from view. Have students continue to
count the cubes, including the hidden ones. 6 cubes 9 cubes
c. d.
1. Have students count the cubes in each
figure. 6 cubes 8 cubes
Which figures have cubes that are hidden e. f.
from view? D, e, and f.
How can you tell if a cube is hidden from
view? Look at the number of rows coming
into or going out of the page. If there is more
than one row of cubes stacked on or adjacent
to each other, then cubes in back or beneath
are hidden. This happens when cubes are
three-dimensional.
1d. One cube is hidden by a cube in front of it
and another on top of it.
7 cubes 12 cubes
98
2. Build Understanding Face Vertex
Edge
Advanced students can build vocabulary by learning the names of various
parts of a cube:
Face: a flat side of the cube
Edge: where two faces meet
Vertex: where three or more faces meet
A cube has six faces, twelve edges and eight vertices.
160 NUMINO Teacher s Guide
