Categorias: Todos - comparison - strategies - ratios

por Colleen Salinas 5 anos atrás

390

Proportional Reasoning

Understanding proportional reasoning involves grasping how quantities relate to one another in various ways. Qualitative comparisons describe relationships using descriptive language, highlighting which of two items is larger or smaller.

Proportional Reasoning

Proportional Reasoning

Big Ideas

Qualitative comparison: Descriptive comparison (Ex: The blue line is bigger than the black line)
Additive comparison: Basic Addition/subtraction to compare (Ex: The blue line is 5cm longer than the black line)

Multiplicative comparison: Multiplication used to compare (Ex: The blue line is twice as long than the black line)

Models

Subtopic

Strategies

Looking at/comparing size
Identifying more/less than

Identifying ratios

- Recognizing multiplicative comparisons between ratios. - Proportional relationships can be expressed using fractions, ratios, and percents. - Students begin to develop the ability to reason proportionally through informal activities.