Can we hear as well as a dog?

We tested our hearing to see if we could hear as well as a dog.  We wore a blindfold and used only our hearing to find the person making the noise. We enjoyed finding where the noise came from and found out that dogs can hear sounds before we can and that's why we have them as guard dogs.

(photos to follow)

Our Metal Detectors

Following on from our electricity experiments, we used the knowledge that we learned about circuits to build our own metal detectors.  We created a circuit with a button cell battery,  3 wires and a LED bulb.  Once we buillt our circuit we put it inside a plasticine alien we made.  We added foil for hands and tested it.  If we touched anything metal the aliens nose lit up.  We had a few problems along the way with the connections staying together but we got there in the end.