Visit to the Wetlands

We had a fab visit to the Wetlands today. Debbie Eddington from ECAN, Conservationist Extaordinaire, met us down at the bridge and began by showing us pictures of some creatures who call the Wetlands home. Some are known to be pests and discouraged, and others are encouraged as valuable members of the Wetlands food web.
We saw lots of native plants, such as flax and toetoe. The flax had evidence of being eaten by native moths.
There were many areas we saw which have undergone huge improvement over the last year or so. Being so near to the rubbish tip, the plantings and windbreak along that side have made a big difference to the overall look of the Wetlands.
Since we have been studying inter-dependence, we were able to see much of it in action here.
We looked at Debbie's tracking boxes, which are clever little devices the students recognised and I didn't. The creatures walk through these little triangular prisms, walking through an ink pad at one end and then leaving their tracks for the DOC workers to find. We saw tracks made by lizards as well as other small creatures that could fit through the tubes.

Symbiosis (Interdependence 2)

Symbiosis is a way to describe a relationship between two organisms. It is classified differently according to whether the relationship benefits both or only one side.
Today we discussed the nature of symbiosis, its many types, and scrutinised one form of symbiosis which is lichen.
The existence of lichen is actually a result of a mutually beneficial relationship between an alga and fungus. We discussed this symbiosis and inspected some lichens under the microscope. Then the students went off to find more samples of lichen of their own.

The second picture shows lichen under a microscope much more powerful than ours.

Microscopes (Interdependence 1)

This afternoon we had heaps of fun with the school's three microscopes. They are relatively low power (10 and 20x) so it wasn't a case of seeing the bugs in water or the cells in onion layers... but very cool nonetheless.
We started by talking through the basic operation of the microscopes and how to handle them carefully. Then we looked at a few pre-assembled items such as some moss, Rosie's eyelash, a fingerprint and pencil shavings.
After we looked at the objects everyone had to go out and search for some more small things that we could inspect. This is where it got really interesting. Laurence and Aleks found a slug - you could even see his breathing hole opening and closing along his side. They also returned with a millipede which looked slimy to the naked eye, but under the microscope we could see that the shine comes from its hard exoskeleton. We found a dead fly on Mrs Lees' windowsill, and its eyes looked absolutely amazing under the lens. A green leaf that someone brought in was described by Ivan like emeralds. The surface wasn't smooth at all but sparkly and bumpy.
Here are some other ideas: https://www.microscopeworld.com/t-low_microscope_ideas.aspx