24 



THIRD GRADE. 



SEPTEMBER. 



PLANTS. 



Relate growth of twigs on north, south, east and west side of trees 

 to symmetrical development of tree. Study pine type of excur- 

 rent tree, fruit tree type of deliquescent tree. Note color of leaves 

 on different parts of tree. Relate coloration of seed to distribution by 

 animals as food, by animals in covering, by wind. 



ANIMALS. 



Distinguish between vertebra ted, molluscous, articulated and radi- 

 ated animals. Food, homes, and means of protection. Use familiar 

 examples of each bird or fish, oyster or clam, insects, starfish, etc. 

 Review and classify animals previously studied. 



MINERALS. 



Compare sandstone and limestone. Sedimentary rock. Classify 

 rocks in your neighborhood. 



ELEMENTARY GEOGRAPHY. 



Evaporation; dew, frost, rain. 



Daily record of day, date, direction of wind, clouds or fogs, rainfall, 

 temperature, barometer, moon's phases, morning and evening stars. 



Rotation and revolution of the earth; inclination of axis; day and 

 night; change of seasons; Autumnal Equinox; Little Bear, Jupiter 

 and Venus. 



NOTE. Emphasize geology in this grade, and do as much field work as pos- 

 sible. Take advantage of any natural features in the vicinity of the school 

 house. 



Forces at work: air, water, wind, frost; building coasts; crumbling cliff; deep- 

 ening gulch; filling marsh. 



Note erosion and sedimentation, in school yard and street. Always relate 

 physical characteristics of minerals and soils to erosion and change in earth 

 surface. 



Relate lime in solution in water to life in water, and beds of limestone. 



