Public Practice Guide
Use this guide to see the type of reasoning MathRoutine expects for grade 2 addition word problems. The goal is not worksheet volume; it is helping students read the situation, choose a model, and explain why the answer fits.
What Students Practice
Reasoning Patterns
Sample Problems
These grade-specific examples show the kind of student-visible reasoning MathRoutine is designed to support: identifying the important quantities, choosing the right structure, and checking the final answer against the story.
A school garden has 28 carrots in one bed and 37 carrots in another bed. Students plant 16 more carrots. How many carrots are there now?
Reasoning Strategy
Add the two beds, then add the new carrots.
AI Support Preview
Keep the first total separate so the student does not lose a ten.
A book fair sold 45 books before lunch and 38 books after lunch. How many books were sold that day?
Reasoning Strategy
Add two two-digit quantities with regrouping.
AI Support Preview
Break the numbers into tens and ones before combining.
A jar has 24 marbles. After Mei adds some marbles, the jar has 61 marbles. How many marbles did Mei add?
Reasoning Strategy
Use the unknown addend relationship 24 + ? = 61.
AI Support Preview
Show that subtraction can find the missing added part.
Practice Ladder
Modeled after elementary workbook expectations: make the story structure visible before moving to the number sentence.
Read the story and identify whether quantities are being joined, separated, or compared.
Represent the situation with a drawing, number sentence, or missing-part equation.
Answer in a complete unit so the student connects the number back to the story.
Assessment Signals
A guide is useful only if it clarifies what teachers and parents should look for in student work. MathRoutine tracks these signals during practice instead of treating every miss as the same mistake.
Common Mistakes
Learning Loop
A strong word problem platform should not only say right or wrong. It should notice the pattern: missed unit rate, ignored leftover, reversed comparison, wrong base percent, or equation setup error.
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Attempt
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Diagnosis
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Next practice
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