You may not realize that high-schoolers are no different from little kids, when it comes to opening packages... The Rock Tumbler was no exception, and was unpacked with much enthusiasm - they had never seen anything like it before, so it was definitely a novelty! With the 'many hands' that were involved in the initial set-up, the instruction sheet disappeared. But with most of these kids 'born on-line,' they lost no time finding the digital version at the company website; and were very proud of themselves when they did!
Just as in my chemistry class, these students learn by experimenting - and by making 'safe' mistakes... I let them set up the Rock Tumbler, and watched from a little distance. They collected rocks from the yard; some were almost boulders - too big to even fit into the tumbler, before they realized that they needed smaller rocks! One student had brought a lump of obsidian from his home. They crushed this special rock and added it to the mix of regular rocks from the school yard. They had initially turned on the Rock Tumbler with water, but no abrasive. After about a day or two of nothing happening, they realized that they had forgotten to add the grit! It has been a learning experience in many respects, including merely following instructions!
Prior to starting up the Rock Tumbler, we had played the 'Rock Cycle Game' - an activity that involves rolling of dice to simulate the element of probability; which determines the fate of a rock, a chamber of magma or a deposit of sediment. Till then, the students had not yet fully appreciated the fact that a rock can turn back into magma/lava; and that all the sediments we encounter were in fact rocks at some point - not too long ago, in geologic time. The Rock Tumbler project has helped reinforce the latter concept.
One thing that young people today do not have much of, is patience! The Rock Tumbler sure helped with that as well... Again, much like toddlers, my high-school 'kids' expected to see results within one class period; but when they actually read the instructions, they realized it would take about a month before their sharp angled rocks could turn into anything that remotely resembled pebbles! Now they go eagerly to check on their project; to see how much progress their simulation of nature has made.
Apart from the well-needed lesson in patience, these students now have a better understanding of how weathering actually takes place in nature - it is a very slow, almost unnoticeable process.
We had also hoped to use the Rock Tumbler in conjunction with a major landscaping project being held on campus, in the summer of 2013. Unfortunately we were unable to use it for that event. But we are working on gathering glass bottles to turn into recycled glass mulch; which can be used in our landscaping, and in some of our planter boxes.”
With gratitude,
Mrs. Fernandes