Building Sets of Ten
http://illuminations.nctm.org/LessonDetail.aspx?ID=L507
A lesson plan for Grades K–2 Mathematics
This Illuminations lesson is the seventh of an eight-part unit titled “Count to 10.” In this lesson, students explore sets of up to 10 items and practice writing the numbers 0 through 10. Students count back from 10, identify sets of up to 10 objects, and record 10 on a chart. They also construct and decompose sets of up to 10 items. This lesson provides opportunities for reasoning and communication.
North Carolina Curriculum Alignment
Mathematics (2004)
Grade 1
- Goal 1: Number and Operations - The learner will read, write, and model whole numbers through 99 and compute with whole numbers.
- Objective 1.01: Develop number sense for whole numbers through 99.
- Connect the model, number word, and number using a variety of representations.
- Use efficient strategies to count the number of objects in a set.
- Read and write numbers.
- Compare and order sets and numbers.
- Build understanding of place value (ones, tens).
- Estimate quantities fewer than or equal to 100.
- Recognize equivalence in sets and numbers 1-99.
- Objective 1.02: Use groupings of 2's, 5's, and 10's with models and pictures to count collections of objects.
- Objective 1.03: Develop fluency with single-digit addition and corresponding differences using strategies such as modeling, composing and decomposing quantities, using doubles, and making tens.
- Objective 1.04: Create, model, and solve problems that use addition, subtraction, and fair shares (between two or three).
- Objective 1.01: Develop number sense for whole numbers through 99.
Grade 2
- Goal 1: Number and Operations - The learner will read, write, model, and compute with whole numbers through 999.
- Objective 1.01: Develop number sense for whole numbers through 999.
- Connect model, number word, and number using a variety of representations.
- Read and write numbers.
- Compare and order.
- Rename.
- Estimate.
- Use a variety of models to build understanding of place value (ones, tens, hundreds).
- Objective 1.04: Develop fluency with multi-digit addition and subtraction through 999 using multiple strategies.
- Strategies for adding and subtracting numbers.
- Estimation of sums and differences in appropriate situations.
- Relationships between operations.
- Objective 1.01: Develop number sense for whole numbers through 999.
Kindergarten
- Goal 1: Number and Operations - The learner will recognize, model, and write whole numbers through 30.
- Objective 1.01: Develop number sense for whole numbers through 30.
- Connect model, number word (orally), and number, using a variety of representations.
- Count objects in a set.
- Read and write numerals.
- Compare and order sets and numbers.
- Use ordinals (1st-10th).
- Estimate quantities fewer than or equal to 10.
- Recognize equivalence in sets and numbers 1-10.
- Objective 1.03: Solve problems and share solutions to problems in small groups.
- Objective 1.01: Develop number sense for whole numbers through 30.



