24 BULLETIN 763. U. S. DEPARTMENT OE AGRICULTURE. 
Illustrative material. — Charts showing food values have already 
been suggested in former lessons. Sets of charts showing the com- 
parative value of milk and its products may be made and will prove 
of service to the class. 
Home projects. — This lesson offers home project work of the second 
type, and is closely related to similar work in home economics. 
Pupils may undertake projects of short time duration in cooking 
with milk or in using milk dishes or milk products. In either case. 
the work should be carefully written up. the recipes copied in the 
report, and a summary of the work made with some comparative 
costs and food value. 
Correlations. — The study of foods and food values, milk, and its 
use as a food, may well be correlated with the lessons hi physiology. 
The home economics class will find abundant material for practice 
work in this lesson. They may prepare the recipes suggested, copy 
them neatly on separate cards, and file them, one set being prepared 
for the school, and each pupil preparing a set for home use. Menus 
containing the balanced ration in which milk is largely used, may be 
planned and worked out both at home and at school. The prepara- 
tion of other dishes to go with the milk dishes will form another 
series of lessons in home economics. 
In language work, written exercises telling how the dishes were 
prepared, the careful writing up of the recipes, and reports on home 
project work will be found useful. 
For arithmetic, a series of problems in which the cost of milk and 
eggs and the cost of is milk found and a comparison made, will be 
found valuable exercises. 
