|water breaking the surface tension of the oil|
|Evan drops a rainbow of colors into his tray|
|Blue and yellow make green!|
We re-filled each of the disposable containers with some more cooking oil and we used vinegar with food coloring. They found the vinegar didn't mix and make larger bubbles as easily. They were finally able to get large blobs of color and once again had fun mixing colors, breaking surface tension, and playing the bubbles and dropper. For our finale we added baking soda to each of the containers. I asked them what would happen, and since they are well used to baking soda and vinegar they predicted it would explode. But instead we saw it fizzing. When the bubbles were small we noticed that the oil kept the fizzing colors separated too. I wasn't always easy to see since my boys had some pretty large colored bubbles by the time we added the baking soda. They each asked for a pile of baking soda and experimented with dropping vinegar onto the baking soda. Ian noticed that even after it appeared to have stopped fizzing that wasn't really the case. He sucked up some baking soda from the bottom of his pan and discovered that it was fizzing. He said that because the vinegar sinks, and the baking soda sinks, the fizzing sunk too. It was a wonderful, fun, hands on experiment that they'll be talking about for days.
|colored vinegar in oil-- watching the oil separate the big green blob|
|We just added baking soda|
|Alec adds more colored vinegar to the baking soda|
|Ian really gets into it! Then watched the water bead up on his hands when he tried to wash them.|
|writing down our possible equations|
We decided to make peanut butter bars for snack tonight. I found this easy, no- bake recipe that I had all the ingredients for so I printed it out. While making dessert and packing lunches I was listening to the boys play. Ian started making up all sorts of math word problems. "If James went to the store and bought 7 gallons of milk and two dropped on the way home. How many are left? " "James bought 18 million gallons of milk and dropped 9 million gallons. How many are left?" "Tom was riding his bike and there were 20 kids standing in a line next to him. He knocked 10 of them down and broke their wrist. How many kids broke their wrists and how many were left?" He went on and on and all of the boys tried figuring out the answers to them all.
Ian had pulled out a kit he had received for Christmas to make a metal truck. He's attempted to follow the directions and build it before but he's always run into problems in the past. Today he tried again by sorting the pieces first and starting at step one. (It's amazing how I can complain about something and then later the same day they contradict me-- wasn't I just saying they never challenge themselves?!).