Name ______Date ______
Classifying Jelly Belly’s
Learning Outcome: Use a classification key or field guide to identify organisms.
Introduction: Scientists use classification keys as tools to identify living things that have already been discovered and classified. In this activity you will learn how to use a key to find names for jelly beans (YUM!). A classification key has numbered steps with choices. As you observe the characteristics of the bean, you move through the key. Remember to always start with number one step and then go where it directs you. It is important to note that in classification we often use a dichotomous key, which is a key with only two choices per step. Note: This jelly bean key does not stick to the normal number of two choices per step. The great thing about this activity is: You get to eat the jelly beans and see if you have correctly identified them!
Materials: 10 jelly beans in a bag and the jelly bean key
Procedure:
1. Look on the back of this paper for the jelly bean key.
2. Pick a bean to start with and list the numbers you follow to identify the bean. Always start with #1. Fill in the numbers in the data table below as you go.
3. Once you have classified all of the beans, write down if you think it tastes like the description. If the bean does not taste like the name and description you may have classified it incorrectly.
Conclusion: How many (out of 10) beans did you correctly identify? ______/10
Reflect
How would you explain a classification key to someone? Write three to four sentences that explain what a classification key is, how it is used, and when it would be a useful tool when identifying plants (not jellybellies).
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Data table
Brief description of the bean / Prediction / Numbers you followed / Common Name / Does the bean taste like the description?Example: Dark blue with light blue ‘cow’ spots / Blueberry / 20 è 21 è 22 è25 / Plum / Yes
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10.