OPTIONAL: Study any of the 100 challenges below.  Present them to Ms. Lettau during library time.  

When presenting your knowledge during Mastery Club time, you will: 

As long as you are prepared, you can present as many challenges as the time allows.  There is no limit. 

25 completed challenges = your name on this website.  

100 completed challenges = your picture on this website AND bragging rights! HA!