Chapter 12
Numbers to 40
1st Grade: Chapter 12 Outline
1st Grade: Chapter 12 Outline
Week 25 - Week 26
Week 25 - Week 26
Essential Questions:
Essential Questions:
- How can patterns help me to count?
- How do numbers represent objects?
- How are place value patterns repeated in large numbers?
- How can I compare numbers using place value?
Content:
Content:
Students will know and understand:
- numerals to 40
- a "ten" consists of ten ones.
- a numeral can stand for many different amounts, depending on its position or place in a number.
Skills:
Skills:
Students Will:
- read and write numerals to 40.
- count to 40 starting at any number.
- represent objects using numerals.
- represent a number with tens and ones.
- group ones into bundles of 10's to find place value.
- compare numbers using place value.
Upon completion of Unit 12:
- 1.OA.C.5. Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
- 1.OA.D.8. Determine the unknown whole number in an addition or subtraction equation relating to three whole numbers.
- 1.NBT.A.1. Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.
- 1.NBT.B.2. Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
- 1.NBT.B.2a. 10 can be thought of as a bundle of ten ones — called a “ten.”
- 1.NBT.B.2c. The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).
- 1.NBT.B.3. Compare two two-digit numbers based on meanings of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <.
- MP.1. Make sense of problems and persevere in solving them.
- MP.2. Reason abstractly and quantitatively.
- MP.5. Use appropriate tools strategically.
- MP.7. Look for and make use of structure.