Grade 2 Module 3: Place Value, Counting, and Comparison of Numbers to 1,000
In this 25-day Grade 2 module, students expand their skill with and understanding of units by bundling ones, tens, and hundreds up to a thousand with straws. Unlike the length of 10 centimeters in Module 2, these bundles are discrete sets. One unit can be grabbed and counted just like a banana?1 hundred, 2 hundred, 3 hundred, etc. A number in Grade 1 generally consisted of two different units, tens and ones. Now, in Grade 2, a number generally consists of three units: hundreds, tens, and ones. The bundled units are organized by separating them largest to smallest, ordered from left to right. Over the course of the module, instruction moves from physical bundles that show the proportionality of the units to non-proportional place value disks and to numerals on the place value chart.
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Common Core Learning Standards
||Reason abstractly and quantitatively.
||Construct viable arguments and critique the reasoning of others.
||Attend to precision.
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Standard Form - Say the number as you see it! 538
Unit Form - Say the number with their place value! 5 hundreds, 3 tens, 8 ones
Expanded Form - Stretch the number apart and add the zeros! 500 + 30+ 8 = 538
Word Form - Write it out! five hundred thirty eight