| style="width: 50%;" |{{Color-box|11|Lesson of the week|{{#widget:YouTube|id=Qyvadb8nwI4|height=350|width=500}}<br>This is a lesson that demonstrates how you can demonstrate visual and logical proof of the Pythagoras theorem. <br> | | style="width: 50%;" |{{Color-box|11|Lesson of the week|{{#widget:YouTube|id=Qyvadb8nwI4|height=350|width=500}}<br>This is a lesson that demonstrates how you can demonstrate visual and logical proof of the Pythagoras theorem. <br> |