Science Buddies: "Ask an Expert"

My 5th graders is doing a science fair project on a lemon battery verses a 9-volt battery. Which one will light the LED light longer. And I am Having a hard time coming up with a name.

My 3rd grader is doing the affects of heart rate while playing video games. He tested 4 kids every 10 minutes for 1 hour with a pulse oximeter. I am Also having a difficult time coming up with a name for that as well.

Please help. Thank you.

Hello,

Sounds like some interesting projects! For the first one you could do:

• "If Life Gives You Lemons... Make a Battery!"
  "A Citrus-y Solution?: Lemon battery vs a Nine-Volt"
  "Lemon-Aid: This Might Get You Out of a Squeeze"

Sorry, I can't seem to come up with any titles for the second one either

Good luck though! Hope you like some of them!
-Regina

Hi,
Judges actually like titles which simply tell what the question is, so here's a possible title for the video games:

"Does playing a video game affect your heart rate?"

Hope this helps!

BTW: I'm curious if different types of games were tested? Maybe the more fast-paced games had more of an effect?