Month: March 2015

Glassmaker

My trade is the glassmaker. Glassmaking was extremely important back in the 1700s and now. The glassmaker made glass stuff and windows, doors, and pots and pans. If a colonist needed a new pot or pan, they would go to a store to buy one or trade for one.

My Ice Cube Engineering Challenge

Ice Cube Keeper Engineering Challenge

Ask: I wondered if a foam cup, a mitten, or bubble wrap would keep an ice cube from melting.

Next, we imagined what our ice cube keeper would look like, planned, and created it. My keeper is foam bubble wrap to hold the ice cube. Outside is a tomato can. I put the bubble wrap inside the tomato can, and it fit snugly inside. I taped the coffee cup top on top of the bubble wrap and can for the door. Then I put a strawberry holder on top of that and taped it on.

I predict that my ice cube will stay frozen for ten hours.

My table:

Time:	Measurement:	Observations:
10:02	3.6 cm	Hard and frozen
10:45	3.6 cm	Melting now
12:00	2.2 cm	Melting
1:04	1 cm	Very small
2:30	Melted, melted, melted

I might try this to keep my ice cube from melting as soon as it did. I might put an ice pack in there. I would also be curious to try a mitten.

My reflections: I learned that you have to cover up tiny holes that you might not see because they let the warm air in faster. Also, sometimes you can put cold stuff in to keep something cold. Metal like a thermos can be a better choice depending on what is inside it.