SCHOOL COURSES. 



19 



Experiment. --Take two plants in pots, place alongside, cover one 

 so as to exclude the light from the plant. Otherwise treat both 

 similarly as regards watering and heat. Leave for a few days and 

 then compare. 



Experiment. Perform a similar experiment, this time depriving 

 one of the plants of water. Continue the experiment as long as 

 necessary. 



Experiment. Perform a similar experiment, this time place one 

 in the most favourable place as regards natural heat, and the other 

 in a cold place. Otherwise treat similarly, and compare after a 

 time as regards growth. Seedlings may suitably be used for these 

 experiments. 



The scholars may thus be led to realise the elementary 

 needs of the plant. The teacher should make the scholars 

 write out, and also show by a simple blackboard drawing, 

 what these needs are. 



Fig. 1. Diagram to illustrate the needs of a plant. 



Plants require 



Sunlight (heat and light). 



Air. 



Water. 



Soil. 



Supplied with these they grow. 

 Fact grasped by the child : A plant is a living thing. 



