Bert's Skirts

Work out how the cost of materials for a skirt would be changed if we used a blend of rayon and cotton in place of pure cotton.

Subject: Mathematics; Science & Technology
Topics:
- Fractions, Decimals, Percents, Ratios
- The Nature of Science (Information Science)
Grades: 5 - 9
Concepts:
- Understands the concept "percent"
Knowledge and Skills:
- Can use percents to describe real world situations
- Can solve problems of the form x% of a = b when any two of the factors are known
- Can perform binary operations with decimal numbers
- Can use a spreadsheet to do routine calculations
- Knows that many fabrics are a blend of different materials

Download Activity: Bert's Skirts (PDF)

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