[b]Establish the formulas for areas of rectangles, triangles and parallelograms, and use these in problem solving[/b] [url=http://www.scootle.edu.au/ec/search?accContentId=ACMMG159](ACMMG159 - Scootle[/url]) [br]- [i]building on the understanding of the area of rectangles to develop formulas for the area of triangles[br]- establishing that the area of a triangle is half the area of an appropriate rectangle[br]- using area formulas for rectangles and triangles to solve problems involving areas of surface[/i][br][br]Use the sliders (red dots) to change the size of the triangle/rectangle. Use the checkboxes (top left-hand corner) to show/hide the area of the rectangle and triangle.[br][br]Use formula: [b]B x H[/b] (base x height) for surface area of a rectangle.[br]Use formula: [b]1/2 B x H[/b] (half [0.5] x base x height) for surface area of a triangle.

[b][i]Can you see the relationship between the area of a triangle and a rectangle? (50-100 words)[br][/i][/b][br][br][br][b]F[/b][i][b]ind the area of both rectangle and triangles for:[/b][br][/i][br]a) B = 6, H = 4[br]Rectangle Area = [br][br]Triangle Area =[br][br]b) B = 12, H = 10[br]Rectangle Area = [br][br]Triangle Area =[br][br]c) B = 20, H = 50[br]Rectangle Area = [br][br]Triangle Area =[br][br][i][b]Use the interactive platform to make and solve 5 of your own problems (you can be creative with your numbers).[/b][/i][br][br]a)[br]b)[br]c)[br]d)[br]e)