Mathematics
Mathematical Thinking
Meta
9–10 yrs
Fractions on a number line (age 9+)
数轴上的分数（9岁以上）
Description
Move fluently between real-world situations, diagrams, number lines, bar models, and symbolic equations involving multi-digit multiplication, fractions, decimals, and percentages, explaining connections between representations
Mastery Evidence
- Represent a scaling problem as both a bar model and a multiplication equation
- Show how 0.35, 35/100, and 35% all represent the same quantity on a hundredths grid
- Translate a line-graph reading into a subtraction equation to find the difference
Assessment Prompt
When your child solves a problem involving percentages or multi-digit multiplication, can they show the same situation using a bar model, a number line, and an equation — and explain what each one represents?
