Complete the following table about the Van Hiele levels of geometric knowledge. 

Level of knowledge and understandng Description Teacher activity Visualsation 421 4.2.2 Analysis 424 4.2.3 See the interrelationships between figures Construct proofs rather than memorise them; see the possibility of developing one proof in more than one way See the construction of 4.2.5 4 2.6 427 4.2.8 4 2.10 4 2.9 geometric systems