Description of problem using the nine-pin circular geoboard. Pupils are asked to find all the 'unique' isosceles triangles with a vertex at the centre of the circle and calculate their angles. Links to teaching notes and worksheet from http://nrich.maths.org.
The National Strategies Last update: 2011
This mathematical problem challenges learners to apply and extend what they know about angles in triangles, to develop key processes and applications. Find out what the problem involves, the benefits of using it in the classroom and the range of processes it can help learners to develop.
http://www.directoryofchoice.co.uk/ Last update: 2011
Mathematics problem: Tilted squares.
The National Strategies Last update: 2011
Mathematics problem: Isosceles triangles.
The National Strategies Last update: 2011
Mathematics problem: Square it.
The National Strategies Last update: 2011
Mathematics problem: Harmonic triangle.
The National Strategies Last update: 2011
Mathematics problem: Squares in rectangles.
The National Strategies Last update: 2011
Mathematics problem: More number pyramids.
The National Strategies Last update: 2011
A description of how the mathematical key processes relate to the Triangles in Circles problem, including specific actions teachers might take to help pupils focus on and develop particular key process skills.
http://www.directoryofchoice.co.uk/ Last update: 2011
Mathematics problem: Route to infinity.
The National Strategies Last update: 2011
