Grade 2 - Place Value Unit
The Place Value Unit involves understanding the relative position, magnitude and relationships within the numeration system in order to answer questions such as:
- How could you use base-10 blocks to show what the numerals in this number mean?
- How can you use the additive property of place value (expanded notation) to decompose the number 997?
(900 + 90 + 7)
- What ways can you show the number 934 without changing its value?
- 9 hundreds, 3 tens, 4 ones
- 8 hundreds, 13 tens, 4 ones
- 8 hundreds, 12 tens, 14 ones
- How can you determine how many tens are in a number?
Math Concepts and Skills:
The student represents whole numbers and understands place value relationships.
The student:
- composes and decomposes numbers up to 1,000 in more than one way as a sum of so many thousands, hundreds, tens, and ones.
- uses standard, word, and expanded forms to represent numbers up to 1,000.
- uses an understanding of place value to identify the number that is 10 or 100 more or less than a given number up to 1,000.
- creates a number that is greater than or less than a given number up to 1,000.
Summative Assessment Task
Students determine how many more seashells need to be found to reach a total of 1,000 seashells.
Instructional Tasks/Formative Assessments
Students determine if there are enough daisy seeds for all the seed packets.
Given a number of postage stamps, students determine how many more stamps are needed to fill all 100 pages of a stamp collection book.
Students determine if the boys have enough pennies saved to buy a video game.
Students determine which boy will be the first to finish a book of 700 pages.