Lesson 1 Name the Parts

    • Let’s name parts of a whole.

Warm-up Which One Doesn’t Belong: Shapes with Parts

Which one doesn’t belong?

  1. Diagram. Rectangle partitioned diagonally into 2 equal parts.
  2. Diagram. Rectangle partitioned into 2 parts, one part shaded.
  3. Diagram. Circle partitioned into 2 parts.
  4. Diagram. Rectangle partitioned into 2 unequal parts.

Activity 1 Card Sort: Partitions

Your teacher will give you a set of cards that show some shapes that are partitioned.

Sort the cards into 2 categories of your choosing. Be prepared to explain the meaning of your categories.

A
Diagram. Circle partitioned into 2 parts.
E
Diagram. Square partitioned into 2 parts.
I
Diagram. Square partitioned into 2 parts.
B
Diagram. Square partitioned into 4 parts.
F
Diagram. Rectangle partitioned into 2 parts.
J
Diagram. Circle partitioned into 3 equal parts.
C
Diagram. Rectangle partitioned into 2 unequal parts.
G
Diagram. Rectangle partitioned into 3 parts.
K
Diagram. Rectangle partitioned into 3 parts.
D
Diagram. Circle partitioned into 4 parts.
H
Diagram. Circle partitioned into 3 unequal parts.
L
Diagram. Rectangle partitioned into 4 parts.

Activity 2 Fold and Name

We just looked at some shapes that were partitioned. Now you’re going to partition some rectangles into equal parts.

Practice Problem

Problem 1

Partition the rectangle into 6 equal parts.

Diagram. Rectangle.