A GRADED COURSE OF NATURE-STUDY 413 



ments in physics to their simple explanation. (X, V, 327, 

 328, 326.) 



Keep weather charts for short intervals at different sea- 

 sons, recording temperature, wind direction, cloudiness, 

 rain or snow, sunshine, the children making the observations, 

 and record. Associate certain kinds of weather with certain 

 directions of the wind. (X, V, 10.) In connection with 

 weather study develop the idea of climate — cold, hot, dry, 

 moist, reading stories of child life in other parts of the world. 

 (V, W.) 



Earth-Study: In connection with house construction 

 study building-stones, the kinds used, where they come from. 

 Observe if possible boulders in the fields, ledges of rock, 

 quarries, and visit a stone cutter, or observe the work on a 

 building under construction. Not much can be expected 

 in this grade in identification of the stones. (S, T, V, 316, 

 339, 343.) Note other uses made of stones — fences, monu- 

 ments. Collect specimens, especially polished pieces. 



In spring observe the running waters from the melting 

 snow. Study the brook.* Note how it carries along float- 

 ing sticks, etc., and mud and sand. Observe the muddy 

 rills running into it down the banks and sides of the ravine. 

 Note the channels washed out by the rills. Bring out the 

 fact that the valley of the brook was also formed in this way 

 by the brook. Observe falls, rapids, pools, and sand-bars, 

 but do not go into details with them. Visit a hill. Note 

 difiSculty in climbing. Note the broadening of the view. 

 Note how streams and roads go around rather than over. 

 Show how the hills are an obstacle in travel; the ravines, and 

 valleys easy to follow. Visit a lake.* Note its beauty of 

 waves and reflections. Note its location amid hills. Note 



