DT design and construction. Building from prototypes through to main plan. Small tetrahedrons- ironing out problems and then using skills to make a huge 16ft pyramid, big enough for the entire class to fit in.
Maths- 2D shapes and properties of equilateral triangles ( 180 degrees and 60 degrees). 3D shapes triangular pyramids and tetrahedrons.
Problem solving- arranging 4 pyramids to make a large pyramid