Right Triangle Metric Relations & Compound Rule of Three

Number of activities: 5 adapted exercises including triangle observation, side labeling, multiple-choice questions, and a contextualized problem.

Target audience:
Students with difficulties in reading, abstraction, and mathematical interpretation. Designed for Middle School (7th–9th grades) and High School. Also recommended for students with Intellectual Disabilities (mild to moderate), Autism (ASD), ADHD, Dyslexia, Down Syndrome, Apraxia, and those in the process of mathematical literacy development.

Format:
Color printable PDF, with triangle illustrations, visual highlights for hypotenuse and legs, real-life situations (cooks and cookies), and an answer key included.

Objective:
To support understanding of right-triangle metric relations and the compound rule of three, using simple language and concrete examples to make traditionally abstract concepts more accessible.

Content:

Topics: Right triangle; opposite leg; adjacent leg; hypotenuse; proportionality between quantities; compound rule of three.

Methodology: Activities with visual observation, marking, side labeling, interpretation of real-life situations, and solving simple problems.

Exercises: Identification of the right triangle, naming the sides, selecting correct alternatives, and solving a practical problem involving cooks producing cookies.

Highlights:

✅ Visual explanations that reduce abstraction in geometry and proportionality.
✅ Direct connection between theory and daily life (cooks, hours, and production quantity).
✅ Simple and predictable language, ideal for neurodivergent students.
✅ Suitable for regular classrooms, tutoring, or special education (AEE) with concrete materials.
✅ Saves up to 8h15min of teacher preparation time.