options: Represent and solve problems involving addition and subtraction.

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

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

Multiply and divide within 100.

Use the four operations with whole numbers to solve problems.

Represent and analyze quantitative relationships between dependent and independent variables.

Use properties of operations to generate equivalent expressions.

Work with radicals and integer exponents.

Represent and solve equations and inequalities graphically.

Write expressions in equivalent forms to solve problems.

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

Interpret the structure of expressions.

Perform arithmetic operations on polynomials.

Write and interpret numerical expressions.

Create equations that describe numbers or relationships

Analyze patterns and relationships.

Apply and extend previous understandings of arithmetic to algebraic expressions.

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

Represent and solve problems involving multiplication and division.

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

Generate and analyze patterns.

Gain familiarity with factors and multiples.

Work with addition and subtraction equations.

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

Understand the relationship between zeros and factors of polynomials.

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

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

Solve equations and inequalities in one variable.

Rewrite rational expressions.

Solve systems of equations.

Add and subtract within 20.

Reason about and solve one-variable equations and inequalities.

Use polynomial identities to solve problems.

Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.
problem_activity: Stage 5: Cover (up to 20)
Required Preparation
Materials to Gather
Cups
Two-color counters
Materials to Copy
Blackline Masters
Shake and Spill Stage 4 and 5 Recording Sheet (G1 and 2)

Narrative
Students decide together how many counters, between 11–20, to use. Partner A closes their eyes while Partner B shakes, spills, and covers up the yellow counters with a cup. Partner A determines how many counters are under the cup and explains how they know. Both partners record the round. Switch roles and repeat.
Additional Information
Each group of 2 needs a cup and 20 two-color counters.


correct_option_index: 30