Curriculum Library

Grade 1 Unit 5: Number Relationships

Key Concept: Word problems can be solved in multiple ways.

Lesson Sequences

1.5-1-1 Join/Separate/Part-Part-Whole Word Problems  |
View Teacher-Facilitated Lesson Students solve join, separate, and part-part-whole word problems with unknowns in various positions. (35-45 min)
1.5-1-2 Comparison Word Problems: Quantity Unknown  |
View Teacher-Facilitated Lesson Students solve comparison word problems where the compare quantity is unknown.   (35-45 min)
1.5-1-3 Comparison Word Problems: Referent Unknown  |
View Teacher-Facilitated Lesson Students solve comparison word problems where the referent is unknown.   (35-45 min)
1.5-1-4 Comparison Word Problems: All Unknowns  |
View Teacher-Facilitated Lesson Students solve comparison word problems with unknowns in various positions.    (35-45 min)
Key Concept: Composing and decomposing are strategies for addition and subtraction.

Lesson Sequences

1.5-2-1 Add a One-Digit Number to a Two-Digit Number  |
Lesson Plan
View Lesson Opener Hands-On (5-10 min)
View Guided Lesson Students compose 10 ones into 1 ten when adding.  (12-20 min)
View Lesson Closer Math Musings (5-8 min)
1.5-2-2 Add and Subtract Multiples of 10  |
Lesson Plan
View Lesson Opener Discover & Discuss (5-10 min)
View Guided Lesson Students add and subtract multiples of ten.  (12-20 min)
View Lesson Closer Math Musings (5-8 min)
1.5-2-3 Mentally Add and Subtract Ones or Tens  |
Lesson Plan
View Teacher-Facilitated Lesson Students apply place value strategies to menally add and subtract ones or tens.  (35-45 min)
1.5-2-4 Equivalence Within Equations  |
Lesson Plan
View Teacher-Facilitated Lesson Students determine whether given expressions are equivalent.  (35-45 min)
1.5-2-5 Making Equivalence Within Equations  |
Lesson Plan
View Teacher-Facilitated Lesson Students use strategies to create equivalent expressions.  (35-45 min)