Target Audience: First Grade
Course: Math
Essential Questions: How can numbers through 100 be counted and written? How can those numbers be represented and ordered? How do we add numbers over 10?
Quizlet vocabulary set for lesson 3
Standards:
Number and Operations in Base Ten 1.NBT
A.Extend the counting sequence.
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.
B.Understand place value.
2. Understand that the two digits of a two-digit number represent amounts of tens and ones.
Understand the following as special cases:
a.10 can be thought of as a bundle of ten ones— called a “ten.”
b.The numbers from 11 to 19 are composed of a ten and one, two,three, four, five, six,seven, eight, or nine ones.
c. 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).
3. Compare two two-digit numbers based on meanings of the tens and ones digits, recording
the results of comparisons with the symbols >, =, and <.
C.Use place value understanding and properties of operations to add and subtract.
4. Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models(e.g., base ten blocks)or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.
Works Cited:
Connected.mcgraw-hill.com. (2018). connectED. [online] Available at: https://connected.mcgraw-hill.com/connected/ [Accessed 26 Apr. 2018].
State.nj.us. (2018). New Jersey Student Learning Standards for Mathematics. [online] Available at: http://www.state.nj.us/education/cccs/2016/math/ [Accessed 26 Apr. 2018].