Students will be able to explain how to find two addends that equal a given sum with more complex sentences using partnerships and sentence frames for support.
Bring the students together in a comfortable space and pass out personal whiteboards and markers to each student.
Write a number on the whiteboard within 20 (e.g. 10, 15, 12, etc). Explain to the students that this number represents a whole amount of banana muffins. Ask the students to think-pair-share with an elbow partner about how they could split the whole amount of muffins into two parts. Give students a few minutes to think of their ideas and instruct them to jot them down on their whiteboards.
Allow a few students to share out their ideas. Ideas may include: 10 and 10, 13 and 7, 12 and 8, etc.
Explain to the students that the two parts are called addends in addition, which simply means the numbers being added together.
Point to the number 20 and explain to the students that 20 is the sum, or the total amount. When we add both addends together, we get the sum.
Explain that today they will explain how to find two addends that equal a given sum.