The purpose of this activity is to engage students in using fractions and percentages to solve a problem.
Description of Mathematics
The background knowledge and skills that should be established before and/or during this activity are outlined in the diagram below:
Click to show example questions for each heading
- Expressing a proportion as a fraction
7 out of 10 people floss their teeth. Write this as a fraction.
- Finding fractions of a quantity
If 7/10 people floss, how many people, out of 30, use dental floss?
- Expressing a percentage as a fraction of 100
84% people use a fluoride toothpaste. Express this percentage as a fraction (out of 100).
- Equivalent fractions
Write 84/100 as a fraction of 25.
- Expressing a fraction as a percentage
15 out of 20 children have at least one dental filling. What is this as a percentage?
- Solving a problem using fractions and percentages
15 out of 20 children have at least one dental filling. What percentage of children do not have any dental fillings?
This activity may be carried out with step by step guidance, or by allowing the student to follow their own method of solution. The approach should be chosen in sympathy with students' skills and depth of understanding.