Changes

==Key Stage 2=====Meaning===An [[ellipse]] is an oval shape. ==Key Stage 3=====Meaning===An [[ellipse]] is an oval shape. ===About Ellipses===: The word [[ellipse]] is used to describe an [[orbit]] which is not a perfect circle. ==Key Stage 4=====Meaning===An [[ellipse]] is an oval shape. ===About Ellipses===: The word [[ellipse]] is used to describe an [[orbit]] which is not a perfect circle.