Game: Strategize to solve logic problems (partition squares)

Game: Estimate angles to reflect lines

Represent fractions with area (unit squares)

Create fractions less than one whole

Represent fractions with subsets

Game: Strategize to solve logic problems (lights)

Identify fractions of area

Partition shapes into halves (rectangles, circles)

Game: Strategize to solve logic problems (river)

Identify fractions of area

Represent fractions with area

Add two whole numbers

Represent fractions with area (unit squares)

Partition shapes into halves and quarters (rectangles, circles)

Represent fractions with subsets (one constraint)

Use regrouping to add two-digit numbers

Represent fractions with area

Identify fractions of sets (equivalent fractions)

Create fractions of a set

Use place value to add two-digit numbers

Represent fractions with area

Strategize to solve subtraction problems (fractions, like denominators)

Use regrouping to subtract two-digit numbers

Subtract two whole numbers

Represent fractions with subsets (two constraints)

Strategize to solve subtraction problems (three terms, three operations)

Create fractions of a set

Represent fractions with subsets

Riddle: Count combinations (flowers)

Riddle: Find all factor pairs (rectangle, grid)

Riddle: Model with algebra (siblings)

Riddle: Find unknowns with algebra (number replacement)

Riddle: Use backtracking to find a number (four operations)

Riddle: Solve logic puzzles (truths and lies)

Create composite shapes (complex, with rotation)

Riddle: Count combinations (matching socks)

Game: Strategize to solve logic problems (wigs)

Use process of elimination

Riddle: Estimate area (squares, grid)

Riddle: Count partitions (chocolate bars)

Riddle: Calculate area (overlapping squares)

Riddle: Count combinations (animal heads and legs)

Represent fractions with subsets (equivalent fractions)

Use place value and regrouping to subtract two-digit numbers

Connect sharing with fractions (single set)

Create fractions (visual model)

Connect sharing with fractions (multiple sets)

Connect sharing with fractions

Identify fractions of area

Identify fractions of area

Add whole numbers (vertical algorithm)

Subtract two-digit numbers (vertical algorithm)

Identify fractions (visual model)

Add two-digit numbers (vertical algorithm)

Add two-digit numbers (vertical algorithm)

Subtract two-digit numbers (vertical algorithm)

Identify fractions of sets and subsets

Create box plots

Explore our geometric tools

Compare similar expressions (addition, subtraction)