The nasen Awards 2020 – Nominations closing soon!
Have your school’s EdTech solutions held up to the remote learning challenges of 2020? Kinteract
Lettings management solutions can keep schools at the heart of the community Kajima
Python in Pieces 2Simple
Five reasons you should have Mac in your school JTRS
Teach Early Years Magazine Subscribe today!
Teach Primary Magazine Subscribe today!
Teach Secondary Magazine Subscribe today!
Technology and Innovation Magazine Order now!
Teach Reading and Writing Magazine Order now!
Oxford University Press Courses
Angles of Triangles – KS4 Maths Lesson Plan
Download your FREE resource here!
Angles of Triangles – KS4 Maths Lesson Plan...
Get them exploring this important method for solving triangles, says Colin Foster…
In this lesson, students will explore how the sine rule allows possible triangles to be solved, given combinations of two angles and a side or two sides and an angle that is not in between.
They are asked to invent angles and side lengths that will lead to (i) a unique solution, (ii) two possible solutions (the ‘ambiguous case’), and (iii) no solutions (no such triangle).
Experimenting with different values helps students to see when each particular scenario will arise.
The sine rule is a powerful way to capture the relationships between the side lengths and angles in a triangle.
Get 8 KS3/4 maths lessons with expert teaching techniques
Welcome, enter your email to get your FREE resource download!
Welcome back! Please login to get your FREE resource download!
Thanks! Please enter a password to sign up and get your FREE resource download!