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Want to learn more about Problem Strings? Check out the links below.
Addition
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
Swapping
Swapping
Building Number
Subtraction
Difference vs. Removal
Remove to a Friendly Number
Over
Remove to Friendly Number Over
Connecting Addition to Subtraction
Over
Removal vs. Difference
Constant Difference
Over
Over
Multiplication
Double and Halve
Over
Using Quarters
Double and Halve
Over
Over
Using Quarters
Multiply to Divide
Over
Over and Adjust
Click to Watch Live
Five is Half of Ten
Over
Division
Over and Under
Remainders
9's Divisibility Relationships
Smart Partial Quotients
Partial Quotient
Ratio and Proportion, Percents, Fractions
Scaling Fractions
Fraction Multiplication
Reasoning about Percents
Fractions as Operators
Inverse Variation
Over
Data Centers
Adding Fractions
Geometry
Quadrilaterals
Quadrilaterals
Cool Patterns
Triangles
Congruent Angles
Rectangles
Want more of these?
Check out my books Building Powerful Numeracy and Lessons and Activities for Building Powerful Numeracy.