Radioactive M&M’s


Radiation is very important for a wide range of human activities. From medicine, to electricity, to space exploration, and so much more. One way scientists use radiation is to determine the age of our Universe using radioactive elements.

Visit these sites to learn more!


Resource 1                                Resource 2


Here is an activity using M&Ms to represent atoms of a radioactive element. DO NOT EAT THE M&Ms UNTIL THE  END OF THE ACTIVITY! (After all, they are “radioactive”).


Here is what you need:

1 large plastic cup

1 large bag of M&Ms

Follow the steps below to complete the activity.




To earn credit for this activity, Take a picture of your graph and the answer to question 2 and upload.