options: Represent and solve problems involving addition and subtraction.

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

Generate and analyze patterns.

Solve equations and inequalities in one variable.

Understand the relationship between zeros and factors of polynomials.

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

Create equations that describe numbers or relationships

Reason about and solve one-variable equations and inequalities.

Rewrite rational expressions.

Write and interpret numerical expressions.

Gain familiarity with factors and multiples.

Write expressions in equivalent forms to solve problems.

Use properties of operations to generate equivalent expressions.

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

Perform arithmetic operations on polynomials.

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

Represent and analyze quantitative relationships between dependent and independent variables.

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

Interpret the structure of expressions.

Work with radicals and integer exponents.

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

Multiply and divide within 100.

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

Analyze patterns and relationships.

Represent and solve problems involving multiplication and division.

Use polynomial identities to solve problems.

Use the four operations with whole numbers to solve problems.

Solve systems of equations.

Apply and extend previous understandings of arithmetic to algebraic expressions.

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

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

Represent and solve equations and inequalities graphically.

Add and subtract within 20.

Work with addition and subtraction equations.
problem_activity: Stage 2: Subtract from 20
Required Preparation
Materials to Gather
Number cards 0–10
Materials to Copy
Blackline Masters
How Close? Stage 2 Recording Sheet

Narrative
Before playing, students remove the cards that show the number 10 and set them aside.
Each student picks 4 cards and chooses 2 or 3 to subtract from 20 to get close to 0. The student whose difference is closest to 0 wins a point for the round. Students pick new cards so that they have 4 cards in their hand and then start the next round.


correct_option_index: 32