A GRADED COURSE OF NATURE-STUDY 427 



cold, etc. Learn directions. (X, V, 327, 326, 328, etc.) Con- 

 nect with nature myths.* 



Astronomy: (Z, V.) Sun's rising and setting, position 

 and times in different seasons. Length of day, noon shadow, 

 day and night. The north star, how used? How found? 

 Big and Little Dippers, and other simple constellations. The 

 beauty of the stars. Read star myths.* Brief reference to 

 the phases of the moon. 



Physics: How we heat our buildings. Kinds of fuel 

 used, sources. (S, V.) Stoves, fireplaces, furnaces, hot 

 water and steam — very simply explained, mainly the con- 

 struction. (258, 250, 257, etc., S.) Primitive method of 

 heating. (U.) Other uses of fire. (T, S.) The ther- 

 mometer, parts, scale, uses. (251, 250, 257, etc.) Cook- 

 ing. (Z, 304, 303.) How our homes are lighted. Com- 

 pare with primitive man. (U.) Simple study of candle,* 

 lamp,* electric and gas light. (S, T, 250, etc.) 



Experiments in evaporation, and condensation of water, 

 melting and freezing. (V, X, 2 5 1 , 2 50, 2 5 7 . ) Make crystals 

 of alum,* salt, and sugar from solutions, by cooling and evap- 

 oration. Show crystals of sugar and salt under a reading 

 lens. Show crystals of quartz; examine snow crystals * 

 in a storm. (V, T, 251, 250, 257, 263, 268.) 



Make a simple study of the magnetic compass * and learn 

 to find directions with it. (V, 251, 250, 257, etc.) Use on the 

 ocean. 



Hygiene and Physiology: What we eat and drink. 

 Should be pure and clean. The refrigerator — what we keep 

 in it, why? (S, N, O, P, Z.) What teeth are for, different 

 shapes and uses. Why we should chew well. Care of the 

 teeth. Cleanliness, bathing. Proper clothing. Avoidance 



