Dave Marks

A good activity for testing the children's ability to use a formula and multiply using decimals. The problems on the worksheet involve finding the circumference of 6 circles and the perimeter of 2 semi-circles. The answers are included.

Children must use their understanding of perimeter to finding the missing length, using the total perimeter and missing side to support them. The activity comes in three differentiated levels: Challenging Fiendish Petrifying (This gives the children a route of progression and allows them to self-assess their understanding when choosing a starting point)

A problem solving activity where the children must use the given formulas to calculate the area and perimeter of different shapes. The 7 problems require quite a bit of reasoning so this activity would be most suitable for children 9yr-13yrs. Answers are included.

A challenging set of 6 problems where children use ratio to calculate missing angles. The first two problems have bar models, which help the children to visualise the calculation they need to solve. The ratios are fairly straight forward and would be suitable for children 9yr-12yr. Answers included.