<p>I know this is too late to correct anything but...
I left off math club on my ECs both Caltech's supplement and common app because I haven't shown as much dedication to it as my other ecs. I didn't need any filler on my application and I didn't want to discredit my other activities. The activities mentioned on the Caltech supplement are actually activities I wrote about in my essays..so I found that more logical. However, I wrote about 1/3 of my science interest essay on math club. Would that look sketchy?</p>
<p>The essay basically goes into how I started to become interested in math because frankly, it isn't my forte and then it dives into how I've always been in love with science and how I expressed it.</p>