Curriculum Library

Kindergarten Unit 3: Adding and Subtracting Within 5

Key Concept: Addition involves joining or putting together.

Lesson Sequences

K.3-1-1 Act Out Join Word Problems to 5  |
View Teacher-Facilitated Lesson Students use a concrete model to physically solve join word problems.  (35-45 min)
K.3-1-2 Join Word Problems to 5  |
View Teacher-Facilitated Lesson Students use manipulatives to represent addition word problems to 5. (35-45 min)
K.3-1-3 Compose Numbers to 5  |
View Lesson Opener Hands-On (5-10 min)
View Guided Lesson Students build their understanding of composition of quantities within 5 through solving put together word problems. (12-20 min)
View Lesson Closer Math Musings (5-8 min)
K.3-1-4 Count by Tens with Objects  |
View Teacher-Facilitated Lesson Students build fluency with the count sequence up to 100. They apply and extend their understanding of creating groups in order to count by tens. (35-45 min)
Key Concept: Subtraction involves separating or taking apart.

Lesson Sequences

K.3-2-1 Act Out Separate Word Problems to 5  |
Lesson Plan
View Teacher-Facilitated Lesson Students use a concrete model to physically solve separate word problems.  (35-45 min)
K.3-2-2 Separate Word Problems to 5  |
Lesson Plan
View Teacher-Facilitated Lesson Students use manipulatives to represent subtraction word problems to 5.  (35-45 min)
K.3-2-3 Decompose Numbers Within 5  |
Lesson Plan
View Lesson Opener Hands-On (5-10 min)
View Guided Lesson Students build their understanding of decomposition of quantities within 5 through solving take apart word problems. (12-20 min)
View Lesson Closer Math Musings (5-8 min)
K.3-2-4 Decompose Numbers Multiple Ways Within 5  |
Lesson Plan
View Teacher-Facilitated Lesson Students build flexibility in their understanding of quantity through decomposing numbers within 5 in multiple ways. (35-45 min)
K.3-2-5 Verbal Count by Tens to 100  |
Lesson Plan
View Teacher-Facilitated Lesson Students build fluency with the count sequence up to 100. They continue to develop their understanding of counting by tens.  (35-45 min)
Key Concept: Addition involves joining or putting together and subtraction involves separating or taking apart.

Lesson Sequences

K.3-3-1 Decide Whether to Add or Subtract  |
Lesson Plan
View Teacher-Facilitated Lesson Students build their understanding of addition and subtraction by analyzing word problems and determining which operation is required in order to solve. (35-45 min)
K.3-3-2 Solve Join and Separate Word Problems to 5  |
Lesson Plan
View Teacher-Facilitated Lesson Students apply their understanding of addition and subtraction in order to solve join and separate word problems to 5.  (35-45 min)
K.3-3-3 Compose and Decompose Within 5  |
Lesson Plan
View Lesson Opener Hands-On (5-10 min)
View Guided Lesson Students extend their understanding of composition and decomposition within 5 and begin to understand the relationship between these operations. (12-20 min)
View Lesson Closer Math Musings (5-8 min)
K.3-3-4 Verbal Count to 100: Count Back from 20  |
Lesson Plan
View Teacher-Facilitated Lesson Students build fluency with the count sequence up to 100. They continue to develop their understanding of counting back, which is a precursor to subtraction. (35-45 min)
K.3-3-5 Counting Collections to 75  |
Lesson Plan
View Teacher-Facilitated Lesson Students apply their understandings of counting and cardinality in order to count a collection that contains up to 75 items.  (35-45 min)