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

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

Represent and solve problems involving multiplication and division.

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

Rewrite rational expressions.

Gain familiarity with factors and multiples.

Write and interpret numerical expressions.

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

Solve systems of equations.

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

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

Interpret the structure of expressions.

Use properties of operations to generate equivalent expressions.

Multiply and divide within 100.

Represent and analyze quantitative relationships between dependent and independent variables.

Work with addition and subtraction equations.

Use polynomial identities to solve problems.

Add and subtract within 20.

Solve equations and inequalities in one variable.

Apply and extend previous understandings of arithmetic to algebraic expressions.

Create equations that describe numbers or relationships

Work with radicals and integer exponents.

Write expressions in equivalent forms to solve problems.

Understand the relationship between zeros and factors of polynomials.

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

Perform arithmetic operations on polynomials.

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

Analyze patterns and relationships.

Generate and analyze patterns.

Represent and solve equations and inequalities graphically.

Represent and solve problems involving addition and subtraction.

Reason about and solve one-variable equations and inequalities.

Use the four operations with whole numbers to solve problems.

Analyze and solve linear equations and pairs of simultaneous linear equations.
problem_activity: Stage 3: 20 Cubes
Required Preparation
Materials to Gather
Connecting cubes
Materials to Copy
Blackline Masters
What's Behind My Back Stage 3 Recording Sheet

Narrative
Students work with 20 cubes, organized into two towers of 10 cubes. One partner snaps the towers and puts one part behind their back and shows the other part to their partner. Their partner figures out how many cubes are behind their back. Students record an addition equation with a blank to represent the missing cubes.
Additional Information
Each group of 2 needs 20 connecting cubes.


correct_option_index: 17