Click any image below to read other teachers' reactions on Twitter.
Want to learn more about Problem Strings? Check out the links below.
Addition
Add a Friendly Number
Add a Friendly Number: Over
Money Model
Clock Model
Integers
Get to a Friendly Number
Connecting Addition to Subtraction
Over
Give and Take
Give and Take
Get to a Friendly Number
Get to a Friendly Number
Over
Over
Get to a Friendly Number
Building Number
Over
Over
Get to a Friendly Number
Over
Swapping
Subtraction
Distance Versus Removal
Remove a Friendly Number: Over
Constant Difference
Distance vs. Removal
Distance vs. Removal
Over
Integers
Integers
Over
Removal vs. Difference
Difference vs. Removal
Remove to a Friendly Number
Remove to Friendly Number Over
Connecting Addition to Subtraction
Over
Constant Difference
Over
Over
Multiplication
Smart Partial Products: Over
Smart Partial Products: Over
Smart Partial Products
Building the Ratio Table
Smart Partial Products: Over
Building the Ratio Table
Place Value Relationships
Over
Place Value Relationships
Over
Building the Ratio Table
Over
Times Ten
Using Quarters
Double and Halve
Over
Using Quarters
Double and Halve
Over
Over
Using Quarters
Multiply to Divide
Over
Over and Adjust
Five is Half of Ten
Division
Smart Partial Quotients
Smart Partial Quotients: Over/Under
Smart Partial Quotients: Over
Division is Fair Sharing
Equivalent Ratios
9's Divisibility Relationships
Over and Under
Smart Partial Quotients
Smart Partial Quotients
Over and Under
Remainders
Smart Partial Quotients
Partial Quotient
Equivalent Ratios
Fractions
Over
Scaling from Unit Fractions
Fractions as Operators with Scaling
Comparing Fractions
Comparing Fractions
Fractions as Operators
Fractions as Operators
Scaling Fractions
Fraction Multiplication
Fractions as Operators
Adding Fractions
Fractions as Fair Sharing
Fractions as Operators
Fractions as Operators
Fractions as Operators
Ratio and Proportion, Percents
Percents: Part Unknown
Inverse Variation
Reasoning about Percents
Geometry
Quadrilaterals
Quadrilaterals
Cool Patterns
Triangles
Congruent Angles
Rectangles
Place Values, Integers
Integer Division
Integer Division
Integer Multiplication
Integer Multiplication
Integers
Integers
Subtraction of Integers
Integers
Integer
Place Value
Place Value
Place Value
Remove a Friendly Number (Integers)
Solving Equations
Order of Operations
Order of Operations
Solving Equations
Order of Operations
Solving Equations
Solving Equations
Order of Operations
Order of Operations
Problem Strings with Models
Subtraction
Multiplication
Statistics and Probability
Data Centers
Measures of Center
Measures of Center
Measures of Center
Probability
Quadratics
Parabola Plus a Line
Viewing Windows for Quadratics
Want more of these?
Check out my Problem String books:
Quadratic
Parabola Plus a Line