Activity Detail

If you are using a TI-73, TI-83, TI-84 or TI-89, there may be particular math or science applications you will need to download to use certain activities. If you are using TI-Nspire technology, please update your TI-Nspire handheld operating system or computer software to view the latest activities. The latest TI-Nspire operating system was released in June 2009.

Browse by Subject

Submit Activity

Saved Activities

Advanced Search

add to saved activities

print this activity

	Combinations

Activity Overview

This activity introduces students to combinations. They derive the formula for the number of combinations of n objects taken r at a time by starting with a list of permutations and eliminating those that name the same group, just in a different order. From here they see how the number of combinations is related to the number of permutations. Students then solve several problems involving combinations, including problems that involve geometry.

Before the Activity

Download the attached PDF and look over the information on the first page. Download and distribute the attached .tns file and Student Worksheet for use during the activity. A .tns file containing expected student results is also available for download.

Activity Downloads:

(file types)