Friday 31 May 2024
Testing Water
In GCSE Chemistry, water samples from Rivers, rainwater, and the sea were tested for pH. Rainwater had the lowest pH, and seawater had the salt extracted and desalinized. In biology, the same water was tested for bugs. River water won having the most colonies of bacteria—but it was from the Thames, so there was no surprise here.
Thursday 30 May 2024
Paper 2 Practice
The students are now working hard on GCSE Maths Paper 2 Practice and A Level Paper 1 Practice, so they are ready for next week's exams. It may be a holiday for some, but the students are working hard, perhaps harder than they have worked before.
Wednesday 29 May 2024
How an Oscilloscope works
There was a time when students had met CRT screens but now with LED this and LED that they have little experience of seeing these let alone knowing how they work. when I showed them a valve they had no idea.
Tuesday 28 May 2024
Proteins and Evolution
Why do some proteins and reactions work the way they do? RuBisCO was probably created when Oxygen levels were lower and Carbon Dioxide Levels were higher, and there were not strong enough evolutionary pressures to create something better.
Saturday 25 May 2024
Changing Standards
We looked at how standards in computing have changed, how Serial and Parallel came and went, and how firewire was a thing. We also looked at how cards for cameras and others have changed and adapted over the years.
Friday 24 May 2024
Titrations
Students are getting lots of practice on how to do titrations. They are attempting to get single drops and very similar values on each repeat.
Thursday 23 May 2024
Spirometer
Completing one of the A-Level PAGs investigating breathing using a @pascoscientific spirometer. Measuring the vital capacity as well as the tidal volume. Trying this out before, during, and after running on a treadmill.
Subscribe to:
Posts (Atom)
Set up for molten electrolysis
Setting up ready to do electrolysis of a molten substance. Most of these are too dangerous to do in the lab and require a fume cupboard to...
-
Negative feedback is a difficult concept to try and get over so I tried using a balance board and the @pascoscientific smart cart strapped...
-
Getting a classic set of results for the titration of NaOH and HCl is not that difficult but it is nice when we can get students to this ...
-
One way of doing this experiment is to add a crystal of KMnO4 to a large beaker containing 1 litre of water and waiting. In the images the...