OBSERVATIONAL LESSON V 

 PART I THE FALL OF A SYCAMORE LEAF 



PREPARATIONS FOR WORK 



Each student must be supplied with a sycamore twig which bears 

 leaves, some of which, at least, are ready to fall, and with a shoot of 

 Tropaeolum (the so-called nasturtium) that has been left in boiling 

 water for some minutes to render it transparent. 



DIRECTIONS TO THE PUPIL 

 First of all look at a single leaf. 



FIGURE' 46.. 

 leaf scar on 

 sycamore jtwig. 



- (l) Record : 



The colour of the blade 

 The length of the blade 

 The breadth of the blade 

 The length of the stalk 

 Any other details (which you 

 can discover) 



Make : 

 A labelled 

 diagram of 

 the leaf 

 showing 

 the parts 

 set down in 

 the notes 



Leave : 

 A space for a 

 water-colour 

 sketch 



(2) Very gently pull some of the lower leaves on the twig until 

 you find one which easily comes away. 



Describe : Make : Leave : 



The end of the stalk Diagrams Spaces for 



The " place " on the twig sketches 



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