options: Generate and analyze patterns.

Understand properties of multiplication and the relationship between multiplication and division.

Solve problems involving the four operations, and identify and explain patterns in arithmetic.

Work with radicals and integer exponents.

Rewrite rational expressions.

Create equations that describe numbers or relationships

Understand the connections between proportional relationships, lines, and linear equations.

Reason about and solve one-variable equations and inequalities.

Solve real-life and mathematical problems using numerical and algebraic expressions and equations.

Interpret the structure of expressions.

Write expressions in equivalent forms to solve problems.

Understand and apply properties of operations and the relationship between addition and subtraction.

Apply and extend previous understandings of arithmetic to algebraic expressions.

Work with equal groups of objects to gain foundations for multiplication.

Multiply and divide within 100.

Represent and solve problems involving addition and subtraction.

Represent and analyze quantitative relationships between dependent and independent variables.

Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.

Solve equations and inequalities in one variable.

Use the four operations with whole numbers to solve problems.

Use properties of operations to generate equivalent expressions.

Use polynomial identities to solve problems.

Solve systems of equations.

Write and interpret numerical expressions.

Perform arithmetic operations on polynomials.

Understand solving equations as a process of reasoning and explain the reasoning.

Gain familiarity with factors and multiples.

Understand the relationship between zeros and factors of polynomials.

Analyze and solve linear equations and pairs of simultaneous linear equations.

Work with addition and subtraction equations.

Add and subtract within 20.

Represent and solve problems involving multiplication and division.

Analyze patterns and relationships.

Represent and solve equations and inequalities graphically.
problem_activity: Narrative
The purpose of this activity is for students to choose from activities that offer practice working with two-digit numbers. Students choose from any stage of previously introduced centers.
Write Numbers
Grab and Count
Five in a Row
Required Materials
Materials to Gather
Materials from previous centers
Required Preparation
Gather materials from previous centers:
Write Numbers, Stages 1 and 2
Grab and count, Stage 2
Five in a Row, Stages 1–3
Launch
Groups of 2
“Now you are going to choose from centers we have already learned.”
Display the center choices in the student book.
“Think about what you would like to do.”
30 seconds: quiet think time
Activity
Invite students to work at the center of their choice.
10 minutes: center work time
Student Facing
Choose a center.
Write Numbers
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Grab and Count
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Five in a Row
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Activity Synthesis
“Mai is playing Grab and Count with her partner. She organized her cubes into 4 towers of 10 and 3 ones. Her partner organized her cubes into 2 towers of 10. How many cubes do they have together?”


correct_option_index: 30