Decorative knot project challenges spatial thinking and makes good summer term fun maths lesson.
jped regrets temporary lull in maths posts, this is due to the construction of school timetable
This beautiful proof of the ancient theorem of Pythagoras is attributed to Leonardo de Vinci. There should be no need for words of explanation, but I have added them all the same.
Rules of Indices provide an excellent first look at a developing mathematical structure. You start with a definition which provides a nice rule. You then generalise, trying to preserve the rule. What you get is a marvellous structure which is all a consequence of the first definition.