5. The Centre of a Triangle

Posted on Posted in Compass & Straight Edge

Using a compass and straight edge, we find the four traditional centres of a triangle : i.e. the incentre, the circumcentre, the orthocentre and the centroid.    We also look at the Medial Triangle, and the Euler Line.   The Centre of a Triangle (Compass and Straight Edge) PowerPoint Lesson: Compass and Straight Edge – The […]

1. Prime Numbers

Posted on Posted in Number Theory

In this video, Teacher Jon introduces secondary students to the primes, making use of the sieve of Eratosthenes, and looks at twin primes, the spread of the primes, Euclid’s proof of the infinity of the primes and Mersenne primes. Video Lesson: Download Worksheet (PDF): NUMBER THEORY – Prime Numbers

2. Fibonacci Numbers

Posted on Posted in Number Theory

In this video, Teacher Jon introduces the Fibonacci sequence using the question posed by Fibonacci in 1202, and continues with some applications of these numbers , in architecture, art, design and nature. Video Lesson: Download Worksheet (PDF): NUMBER THEORY – Fibonacci Numbers

2. How To Teach With Geo-boards

Posted on Posted in Geo-boards

Teacher Jon shows how geoboards are one of the best hands on tools for learning Maths, by demonstrating the range of topics at the Lower Secondary Level that geoboards can be used for, giving over 100 examples based on a standard curriculum.   When given live, this talk is always followed a workshop where students are given […]

1. How To Make Geo-boards

Posted on Posted in Geo-boards

In this lesson, Teacher Jon explains how to make a class set of 30 geoboards, cheaply and easily.  Students can help in this process, which increases their interest.    Geoboards are hardy, and last many years if stored correctly.  They are very useful in teaching Maths from Primary up to Lower Secondary , i.e. up […]