# Areas of Interest

## Areas of Interest

In this feature, we offer a selection of rich problems about area for use in all secondary classrooms.

We start by inviting younger students to explore areas on isometric grids, move on to problems about Pythagoras' theorem, and finally, for the oldest students, we offer tasks about integration and functional relationships.

### Isometric Areaslive

##### Stage: 3 Challenge Level:

We usually use squares to measure area, but what if we use triangles instead?

### More Isometric Areaslive

##### Stage: 3 Challenge Level:

Isometric Areas explored areas of parallelograms in triangular units. Here we explore areas of triangles...

### Of All the Areaslive

##### Stage: 4 Challenge Level:

Can you find a general rule for finding the areas of equilateral triangles drawn on an isometric grid?

### Towering Trapeziumslive

##### Stage: 4 Challenge Level:

Can you find the areas of the trapezia in this sequence?

### Graphs of Changing Areaslive

##### Stage: 5 Challenge Level:

Use graphs to gain insights into an area and perimeter problem, or use your knowledge of area and perimeter to gain insights into the graphs...

### Area Llive

##### Stage: 5 Challenge Level:

By sketching a graph of a continuous increasing function, can you prove a useful result about integrals?