A right angle = 90 degrees
A straight line = 180 degrees
The 3 angles of a triangle = 180 degrees
A complete turn = 360 degrees.
We will also look at nets of 3D shapes as well as 2D shapes.
Here are some games to get you started:
http://www.crickweb.co.uk/ks2numeracy-shape-and-weight.html#triangles
http://teams.lacoe.edu/documentation/classrooms/amy/geometry/6-8/activities/quad_quest/quad_quest.html
This site lets you visualise 3D shapes: http://illuminations.nctm.org/ActivityDetail.aspx?ID=70