How much food do your classroom animals or household pets eat every day? Does the guinea pig eat a spoonful of pellets? handful? .a Can you compare how much you eat with how much your dog eats? A shrew eats as much as one hundred times its own weight in food in one day. If you ate one hundred times your weight, how much food would you consume in a day? How many times your present weight will you eat in twenty years? 48 Formulas and recipes Formulas given in parts also emphasize the need for establishing some arbitrary standard unit and for selecting a unit of an appropriate size for the purpose intended. (If you want to end up with a pailful, you will not want to measure it out in tablespoons.) Almost any kind of container can serve as a standard, provided it is filled to the same level each time it is used. Play-Doh, baker's dough, finger paint, and papier-mâché are a few examples of concoctions children can measure in this way. Older students might like to try following this formula for a chemical garden: When asked how many children using the same-sized cup "Three," was her answer. "Only three children from the whole bottle?" asked the teacher. "Yes," replied the girl, holding the cup up to the After the child had poured out two cupfuls, making It was not until the third cupful had been emptied out How much punch will you need to make to provide for refills at your party? What if there's some punch left over? Can you pick out Try finding a container of the right size for all sorts of leftovers: clay, crayons, marbles, etc. 50 Dis Cups, pints, quarts, and gallons become real to the child as he handles them. tinguishing one quantity from another becomes important to him when there is reason for telling them apart. Children in a second grade set about the task of changing Although most of the children knew the word "gallon," How many different ways can you find to make a gallon? 51 In one trial class, a group of students became interested were eatable and loaves that were not taught the young ment. 52 |