This is a 1-hour, fully scripted First Grade Math lesson plan addressing Numbers in Base-Ten: Groupings of Tens and Ones (1.NBT.2). This lesson includes: making two-digit numbers using tens and ones and writing number sentences in expanded form to equal a given number. Students will build a two-digit number using base-ten blocks, count by tens and ones, write a number sentence in expanded form for two-digit numbers, and draw a picture using base-ten blocks to represent a two-digit number.
Skills addressed: Groupings of Tens and Ones: Counting, Base-Ten Blocks and Expanded Form
**The content of this lesson is derived from a portion of the Half Day Lesson Plan: “Groupings of Tens and Ones.”