Second Grade Unit 1
Counting Coins and Combinations (Add/Subtract within 20)
(includes time and money)
Duration: 7
Weeks
August 1  September 15
Curricular Resources
Math Expressions  Unit 1: Addition and Subtraction within 20

Investigations  Unit 1: Counting, Coins, and Combinations
(Addition, Subtraction, and the Number System 1) Username: Valley Elementary Test Password: Lilac#24 
Valley2nd Grade Trimester Standards
California Common Core Content Standards in this Unit
OPERATIONS AND ALGEBRAIC THINKING
Represent and solve problems involving addition and subtraction.
CCSS.MATH.CONTENT.2.OA.A.1
Use addition and subtraction within 100 to solve one and twostep word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.1
Add and subtract within 20.
CCSS.MATH.CONTENT.2.OA.B.2
Fluently add and subtract within 20 using mental strategies.2 By end of Grade 2, know from memory all sums of two onedigit numbers.
Represent and solve problems involving addition and subtraction.
CCSS.MATH.CONTENT.2.OA.A.1
Use addition and subtraction within 100 to solve one and twostep word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.1
Add and subtract within 20.
CCSS.MATH.CONTENT.2.OA.B.2
Fluently add and subtract within 20 using mental strategies.2 By end of Grade 2, know from memory all sums of two onedigit numbers.
MEASUREMENT
Work with time and money.
CCSS.MATH.CONTENT.2.MD.C.7
Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.
CCSS.MATH.CONTENT.2.MD.C.8
Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using $ and ¢ symbols appropriately. Example: If you have 2 dimes and 3 pennies, how many cents do you have?
Work with time and money.
CCSS.MATH.CONTENT.2.MD.C.7
Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.
CCSS.MATH.CONTENT.2.MD.C.8
Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using $ and ¢ symbols appropriately. Example: If you have 2 dimes and 3 pennies, how many cents do you have?
Note: A collection of number sense games is mentioned and games are linked throughout the weeks. However, if you want to preview all the games, scroll all the way to the bottom of this page and you will see them all.
Week 1
Day 2: Session 1.2  Counting Cubes
Blackline Masters: Number Talk: M5  Cover and Count Shape A R5 Cubrir y contar: Figura A M6  Cover and Count Shape B R6Cubrir y contar: Figura B M7M8  Family Letter R7R8  Carta a la Familia Day 3: Session 1.3  The Number Line
Number Talk Introduction to the number line.
Day 4: Session 1.4  The Hundred Chart
Number Talk:
Supplemental Game for the Week:
Poison (modify by starting with 7 counters instead of 13  focus on explaining their logical thinking) 
Related LiteratureBook: Ten Friends

Assessment: Guess my number
Guess my number.
Weeks 23

Game: Making 25¢Counting Pennies VideosStudents identify coins and their attributes.
Video 1Video 2Video 3Additional ResourcesMoney Videos
Money Books
Word Problems: Using 10 FramesPlus 1 Plus 2/Minus 1 Minus 2 Bingo 

Tens Go Fish 
Weeks 45

Interactive Ten Frames 
Weeks 6  7
Curriculum for Weeks of September 4 September 15

Double ItKhan Academy 
Games Previews and Downloads
The document on the right provides a cleaner copy of each set of game directions and game boards than the copies provided below. However, the copies below include the lessons.





