Lesson Plan

Explain that each digit in a three-digit number tells how many hundreds, tens, or ones, based on its position (e.g., in 482, the 4 means 4 hundreds, the 8 means 8 tens, and the 2 means 2 ones)

Represent a three-digit number using base-ten blocks on a place value mat with three columns (hundreds, tens, ones) and write the corresponding expanded form (e.g., 347 = 300 + 40 + 7)

Demonstrate that 100 is the same as a bundle of ten tens - ten ten-sticks grouped together make one hundred-flat - and explain why this "unitizing" works

Identify multiples of 100 (100, 200, 300, ... 900) as some number of hundreds with 0 tens and 0 ones, and explain the role of the two zeros

Read a three-digit number and explain the value of each digit, including numbers with zero in the tens or ones place (e.g., 706 = 7 hundreds, 0 tens, and 6 ones)

2.NBT.A.1

2.NBT.A.1: Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases: a. 100 can be thought of as a bundle of ten tens - called a "hundred." b. The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones).