Page 157 - NUMINO TG_6A
P. 157
Activity 1 Cylinders
jOb ective Understand the shapes needed to make cylinders.
1. Textbook Instructions Activity 1 Cylinders
Point out the cylinder in the upper left corner. 1 . Jessica made a cylinder with three pieces of paper. She used the blue
In this activity, students will learn how to
visualize three-dimensional objects based on papers for the base and the top and the red paper for the lateral
two-dimensional drawings. Students cannot surface. Find the three pieces of paper that Jessica used to make the
cut out the pieces to find the answer. cylinder.
1. Have students work with partners to find
the pieces of paper needed to make a
cylinder that matches the figure in the upper
left corner. Have them write down their
answers and explain their choices.
Students can look back at the cylinders on
the previous page if they are having
difficulty. Ask them what shapes the top and
base have. Point out that when they look at
a cylinder straight on, the round bottom
looks like an oval. Explain to them that two-
dimensional drawings of three-dimensional
objects can be deceiving.
84
2. Build Understanding
Although the two circles are the correct choices for the base and Top Top
top of the cylinder, not all three-dimensional objects are based Base
on circles. They can be any shape, as long the sides are parallel
and the base and top have the same shape.
Base
140 NUMINO Teacher s Guide
jOb ective Understand the shapes needed to make cylinders.
1. Textbook Instructions Activity 1 Cylinders
Point out the cylinder in the upper left corner. 1 . Jessica made a cylinder with three pieces of paper. She used the blue
In this activity, students will learn how to
visualize three-dimensional objects based on papers for the base and the top and the red paper for the lateral
two-dimensional drawings. Students cannot surface. Find the three pieces of paper that Jessica used to make the
cut out the pieces to find the answer. cylinder.
1. Have students work with partners to find
the pieces of paper needed to make a
cylinder that matches the figure in the upper
left corner. Have them write down their
answers and explain their choices.
Students can look back at the cylinders on
the previous page if they are having
difficulty. Ask them what shapes the top and
base have. Point out that when they look at
a cylinder straight on, the round bottom
looks like an oval. Explain to them that two-
dimensional drawings of three-dimensional
objects can be deceiving.
84
2. Build Understanding
Although the two circles are the correct choices for the base and Top Top
top of the cylinder, not all three-dimensional objects are based Base
on circles. They can be any shape, as long the sides are parallel
and the base and top have the same shape.
Base
140 NUMINO Teacher s Guide
