The area under a curve can be estimated by dividing it into triangles, rectangles and trapeziums. If we have a speed-time or velocity-time graph, the distance travelled can be estimated by finding ...

This area is infamous for shark attacks, but not just any shark: an estimated 38% of all great white shark attacks in the US happen here. As a result, these waters bear the name "Red Triangle." ...

You can even draw three curved lines to motivate the idea that the sides have to be straight. 5. Move to Sketches 1 through 7 where the students will have several challenges to complete. They are to ...