🔢 Mathematics · Measurement
Area of Triangles & Parallelograms
Calculate the area of parallelograms and triangles using formulae (A = b × h for parallelograms, A = ½ × b × h for triangles)
Typical age: 10–11 years
“If your child is cutting triangular pieces of cloth where the base is 8 cm and the height is 5 cm, can they use a formula to work out the area of each piece?”
0 / 3 mastered
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Needs first
- Multiplying fractions (age 10+)
Triangle area formula (½ × b × h) requires understanding multiplying by ½
- Estimating answers (age 9+)REQUIRED
Triangle/parallelogram area extends rectangle area formula
- Using Simple Formulae
Using area formulae connects to the general skill of using formulae
- Classifying shapes by properties
Must identify parallelograms/triangles and understand base/height as geometric properties