(Modified from Washington MESA In The Pharmacy Curriculum)
M&M'S® Ratios
Activity Objectives
Students will increase understanding of the concepts of parttopart and parttowhole ratios. They will also apply sorting and tabulating skills.
Activity Directions
 Carefully open your bag of M&M'S and count how many you have, and how many of each color. Complete the table below:
Color 
Red (R) 
Orange (O) 
Yellow (Y) 
Green (G) 
Blue (Bl) 
Brown (Br) 
TOTAL (TOT) 
Number 







 Write the following ratios:
R to O ______ G to R ______ Bl to O ______
R to Y ______ O to Bl ______ G to Y ______
R to G ______ Br to Y ______ O to Br ______
R to Bl ______ Y to G ______ Y to R ______
R to Br ______ Bl to Br ______ Br to Bl ______
 Is R to G the same as G to R? Explain.
 Compile the data from everyone in your group on the following table.
Color 
Red (R) 
Orange (O) 
Yellow (Y) 
Green (G) 
Blue (Bl) 
Brown (Br) 
TOTAL (TOT) 
1 







2 







3 







4 







5 







6 







7 







8 







TOTAL 







 Write the following parttowhole ratios:
R to TOTAL ______ (R + O) to TOTAL ______
O to TOTAL ______ (G + Br) to TOTAL ______
G to TOTAL ______ (B + R + G) to TOTAL _____
Bl to TOTAL ______ (Bl + O + Y) to TOTAL ______
Y to TOTAL ______ (Y + Bl + Br + G) to TOTAL ______
Br to TOTAL ______ (R + O + Y + G + Br + Bl) to TOTAL ______