Objective: By the end of the lesson/activity, the students will be able to:• Represent numbers in standard form as an equa-

tion in expanded form.

Materials:• “Expanded Form Basketballs” activity sheet• “Expanded Form” activity sheet

Teacher Preparation:• Copy and cut out the “Expanded Form Basketballs”

activity sheet.• Copy the “Expanded Form” activity sheet.

Introduction:Show 187, in standard form, to the class. Explain that the number represents the number of games Coach-Frank Martin has won as a head coach. Question(s):• Have you ever played 187 basketball games before? • How many basketball games have you won?

Activity:• Encourage the students to use their expanded form

basketball cutouts to demonstrate the expanded form of 187. After each student has attempted to represent the number in expanded form, bring the class together. Model how to represent the num-ber as an equation in expanded form. Use your model to think aloud, being mindful to include some of the misconceptions you observed earlier. Ask questions at the end of the model to check for student understanding.

• After the activity, allow the students to work on the

Lesson Plan 2nd Grade

Number Sense and Base Ten

“Expanded Form with Basketballs”South Carolina College- and Career-Ready Standards for Mathematics:2.NSBT.3. Read, write and represent numbers through 999 using concrete models, standard form, and equations in expanded form.

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“Expanded Form” activity sheet. Model the first problem. Then, work with the students to com-plete the second and third problems. The remain-ing problems can serve as independent practice.

Question(s):• What number is in the ten’s place? - How can I show this number using my basketball cutouts? - Where does this 8 go in my equation? Why?

Extension:• Require the students to use base ten blocks in addi-

tion to the basketball cutouts.

Season 2