This is a second grade Math Unit, Lesson 11 out of 15. Reasoning with Shapes and their Attributes - Finding the Missing Space. In this lesson, students make use of skills from 2.G.2 but do so with added complexity. They pay attention to rows and columns of squares, learned from the previous lesson, but must also model a missing number of same-size squares by using a number sentence. Aligned to Common Core State Standards: 2.G.2 , 2.OA.4 , MP.4 , MP.5
Reasoning with Shapes & their Attributes Lesson 11
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Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.
Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.
Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.