2.8 Equal Groups

Unit Goals

• Students work with equal groups of objects to gain foundations for multiplication.

Section A Goals

• Determine whether a group of objects (up to 20) has an odd or even number of members.
• Write an equation to express an even number as a sum of two equal addends.

Section B Goals

• Find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns using addition.
• Partition rectangles into rows and columns of equal-size squares, and count to find the total number of squares.
• Represent the total number of objects in an array as a sum of equal addends.

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