Mathematics
Mathematical Thinking
Meta
7–8 yrs
Shape patterns (age 7+)
图形规律（7岁以上）
Description
Look for and use mathematical structure: apply place-value patterns to three-digit operations, use multiplication/division relationships, and exploit shape properties to classify
Mastery Evidence
- Use the structure of place value to explain why adding hundreds only changes the hundreds digit
- Use commutativity and the relationship between multiplication and division to derive unknown facts
- Classify shapes by their structural properties (number of sides, right angles, parallel lines)
Assessment Prompt
When your child is multiplying or working with larger numbers, do they use what they know about place value or number relationships to simplify the calculation — like breaking 24 × 3 into 20 × 3 + 4 × 3?
