Ann
Stephenson, Charles R. Hadley Elementary, Miami, FL
Grade Level
4th - 5th
Subject
Mathematics
Background
Students learn how to multiply
fractions by increasing a recipe in this fun online lesson.
Each student is asked to search online for a recipe, and students
visit these food web sites: All
Recipes and The
Food Network at . During the lesson, one of the boys asked
if he could bring the actual food so the children could
taste it. When he did, his recipe was partially in Spanish,
so we looked for the meaning of the words in an online English
and Spanish dictionary called Online
Free Dictionary.
Objectives
To solve word problems involving fractions and mixed numbers
To determine quotients of common fractions and mixed numbers
Student or teacher provides a taste of
coconut custard (or other recipe).
The teacher explains that in order to make enough food for a
class of thirty-eight students, the original recipe that serves
six, needs to be increased.
She elicits responses from the children and shows how the
increase is made.
The students then are shown how to multiply each fraction and
whole number by the number needed to increase the recipe.
Each student will then use his or her
recipe and increase it by the number necessary using
the Feed the Whole
Class Work Sheet.
They will ask themselves the question, "Are my results
reasonable?"
If not, they will have to re-multiply.
Tembleque (Coconut Custard)
1 can coconut milk
2- 1/2 cups water
1-cup sugar
2/3 cup maicena (cornstarch)
1/2 tsp. salt
1 tsp. vanilla
cinnamon to taste
Cook the sugar in a pot until it turns brown.
Mix the cornstarch with water in a bowl. Stir.
Add it to the sugar, salt and vanilla and cook at low temperature,
stirring constantly.
Add
cinnamon to taste and serve cold.
Evaluation
Students will use calculators
found on the computer to check to see if the increase is accurate.
Students will check each other’s answer and share results with
class.
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