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

Add and subtract within 20.

Use the four operations with whole numbers to solve problems.

Gain familiarity with factors and multiples.

Represent and solve equations and inequalities graphically.

Perform arithmetic operations on polynomials.

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

Multiply and divide within 100.

Interpret the structure of expressions.

Apply and extend previous understandings of arithmetic to algebraic expressions.

Use polynomial identities to solve problems.

Use properties of operations to generate equivalent expressions.

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

Represent and analyze quantitative relationships between dependent and independent variables.

Understand the relationship between zeros and factors of polynomials.

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

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

Generate and analyze patterns.

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

Analyze patterns and relationships.

Reason about and solve one-variable equations and inequalities.

Work with radicals and integer exponents.

Solve systems of equations.

Rewrite rational expressions.

Write expressions in equivalent forms to solve problems.

Create equations that describe numbers or relationships

Write and interpret numerical expressions.

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

Represent and solve problems involving multiplication and division.

Represent and solve problems involving addition and subtraction.

Work with addition and subtraction equations.

Solve equations and inequalities in one variable.

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

Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.
problem_activity: Narrative
The purpose of this Number Talk is to elicit understandings students have for adding and subtracting within 20 using the strategy of making a ten.
Launch
Display one expression.
“Give me a signal when you have an answer and can explain how you got it.”
1 minute: quiet think time
Activity
Record answers and strategy.
Keep expressions and work displayed.
Repeat with each expression.
Student Facing
Find the value of each expression mentally.
\(10 + 4\)
\(9 + 4\)
\(9 + 6\)
\(15 – 6\)
Student Response
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Activity Synthesis
“Did anyone approach the problem in a different way?”


correct_option_index: 1