Public learning track
Addition and Subtraction Within 20
5 lessons
Goal
Build fluency with addition and subtraction within 20 using mental strategies like doubles, making ten, and fact families.
Featured Diagrams
Adding Within 20 Using Doubles
5 lessons
0 of 5 done
Standards Covered
- 111.4(b)(1)(C)Texas Essential Knowledge and Skills (TEKS) · Math · 2nd grade · Grade 2select tools, including real objects, manipulatives, paper and pencil, and technology as appropriate, and techniques, including mental math, estimation, and number sense as appropriate, to solve problems;
- 111.4(b)(1)(F)Texas Essential Knowledge and Skills (TEKS) · Math · 2nd grade · Grade 2analyze mathematical relationships to connect and communicate mathematical ideas; and
1
6 lessons
Understanding Place Value in Three-Digit Numbers
Understand that digits in two- and three-digit numbers represent tens, hundreds, and ones, and represent numbers using models and expanded form.
2
5 lessons
Skip Counting and Number Lines
Skip count by 2s, 5s, 10s, and 100s to recognize number patterns, and locate two- and three-digit numbers on a number line.
3
4 lessons
Comparing and Ordering Numbers
Use comparison symbols and ordering strategies to compare and sequence two- and three-digit numbers from least to greatest and greatest to least.
4
5 lessons
Even and Odd Numbers and Mental Math
Identify and explain even and odd numbers using pairs, and mentally find 10 or 100 more/less and estimate quantities in everyday situations.
5
5 lessons
Addition and Subtraction Within 20
Build fluency with addition and subtraction within 20 using mental strategies like doubles, making ten, and fact families.
6
5 lessons
Two-Digit Addition Strategies
Master two-digit addition with and without regrouping, using both horizontal and vertical methods.
7
6 lessons
Two-Digit Subtraction and Multi-Addend Addition
Master two-digit subtraction with and without regrouping, including across zeros, and extend addition to three or four two-digit addends.
8
9 lessons
Three-Digit Operations and Word Problems
Extend addition and subtraction to three-digit numbers with regrouping, including across zeros, and apply these skills to solve multi-step word problems.
9
6 lessons
Identifying Coins and Their Values
Identify pennies, nickels, dimes, and quarters by appearance, state each coin's value, and write single-coin values using the cent symbol.
10
4 lessons
Counting Single Coin Collections
Count groups of the same coin type using skip counting to find the total value up to one dollar.
11
6 lessons
Counting Mixed Coin Collections
Count collections of mixed coins by combining skip counting strategies to find total values up to one dollar.
12
4 lessons
Writing Money Amounts
Write money amounts correctly using the cent symbol, the dollar sign with a decimal point, and convert between the two formats.
13
5 lessons
Making One Dollar and Comparing Coin Collections
Find combinations of coins that total exactly one dollar and compare the values of different coin collections.
14
6 lessons
Money Calculations and Change
Apply coin-counting skills to find equivalent combinations, make change, and solve one- and two-step money word problems.
15
9 lessons
Real-World Shopping and Money Applications
Apply money skills to complex real-world scenarios, including shopping, sharing money, reading tables, and planning purchases.
16
7 lessons
Equal Groups and Arrays: Foundations of Repeated Addition
Build understanding of equal groups and arrays as visual models, and connect them to repeated addition sentences.
17
8 lessons
Even and Odd Number Patterns and Problem Solving
Develop understanding of even and odd numbers through pairing models, explore addition and skip-counting patterns, and apply equal-groups reasoning to word problems.