lesson 3

Look at Flats

Estimated Class Sessions: 1–2

Summarizing the Lesson

Display another Show the Number with Base-Ten Pieces Master. Give each student pair a different number between 100 and 300. Ask them to show the number with base-ten pieces two different ways. Students should then write down the number of flats, skinnies, and bits used to show the number on the display. Then challenge students to write a number sentence to match the pieces. See Figure 4.

Assign the Show a Number pages in the Student Activity Book.

X

Use the Show a Number pages in the Student Activity Book to assess students' abilities to represent two-digit and three-digit numbers using base-ten pieces and symbols [E1]; compose and decompose numbers using ones, tens, and hundreds [E2]; show and recognize different partitions of numbers using base-ten pieces [E3]; make connections between place value concepts and numbers represented with base-ten pieces [E4]; and recognize that different partitions of a number have the same total [E5].

Adventure Book:
Student Activity Book: 285 286
Answers
X
SAB_Mini
+
X
SAB_Mini
+
Master:
One of the many ways to show 239
X
+