How about warming your brain with a riddle?

Riddle time - get that brain warmed up with something different for the day. Of course, your brain should already be on fire having just been introduced to the Activated Classroom Pedagogy, so let's use the excitement to see if you can solve this while you work on our last activity. Look at the image below - Your challenge is remove six matches to leave ten. This requires a creative mind ;-) You can click here for the answer...only once you've applied your brain.
(scroll down for the answer)
(scroll down for the answer)