Homeschooling boys is always more challenging in my opinion than girls. Boys get twitchy sitting still all the time and have zero interest in crafty stuff, so I have to keep them interested in other ways.
They have been learning about geology and one experiment they did recently asked them to model one of the 3 different types of volcanoes and determine what materials would best replicate certain types of volcanic eruptions.
This is how they started out.
A nice controlled flowing eruption.
Then they decided to see how the build up of pressure effects an eruption.
Well this is what happened......
So that was our cue to move the experimentation outside.
Finally our volcano had a blowout and suffered a stress fracture from too much pressure build up. But not to be deterred the boys swapped over to plastic bottles to continue their experiment. At this point they finally perfected their formula.
Mission accomplished.....a plastic bottle filled with washing detergent,food colouring, vinegar and baking soda, shaken up and then hit really hard best replicates the volcanic eruption of a composite volcano. See...learning can be fun :)