Math 6A ( Period 1 & 2)

Comparing & Graphing Ratios 5-4

Working with your partners, you complete the following ratio table for each frosting mixture. In order to complete these accurately,  you had to listen to what the students’ frosting recipe called for as well as what my teacher recipe called for.

After you have completed the Drops of Blue column, label the third column that will show the total number of drops for each relationship.  Then complete that column as well.

Whose frosting is bluer? Whose frosting is redder? Justify your answers.

Students’	Frosting			Teacher’s	Frosting
Drops of Red	Drops of Blue			Drops of Red	Drops of Blue
1				3
2				6
3				9
4				12
5				15

We then to use the value from the ratio table for your frosting to create a graph in the coordinate plane. Together, as a whole class we used the values in the table to plot the points. Then connected the points and each of you discussed the graph with your partners. What do you notice?

We continued and working with your partners each of  you  completed the following table and the graph

Teacher’s	Frosting
Drops of Red	Drops of Blue
3
6
9
12
15

You explained the relationship between the entries in the ratio tables and the points on the graph. How is this graph similar to the first graph?  How is it different?

How can you use the graphs to determine whose frosting has more red or blue in it? You and your partners discussed this question.