The sine Rule for area of a triangle

Is it better to use the windows built in calculator or the Casio app to demonstrate how to do a calculation. I find it better to use the app as it is the same as the student is using.

Garlic Roots and Mitosis

 The Garlic is growing well, and soon it will be time to see if the root cells are undergoing mitosis by creating stained slides of root squashes. The process is difficult for the students so they create at least 10 slides hoping that one will be ok

Real world programming vs what is taught in schools

 

As the new A Level computing students start learning and they start to look for projects, should we just teach them programming or use real world environments such as docker that they will meet if they do any real projects

Moving Electricity

 Its a great demo when you can show how using step up and step down transformers how electricity can be moved across the country from the power station to the home. Its also fun generating the electricity from chemical to steam to a generator.

Metallic Structure Model

 A Petri dish, some water and washing up liquid, a straw and a pipette tip and with a gentle blow we have a model of a metal.

Calcium Oxide reacting with water

Adding water to the Calcium Oxide to make slaked lime and a lot of heat. The lump in the middle is the bit that didn't react that upset the figures.

Limestone experiments

Heating Limestone intensely to make Calcium Oxide, thermal decomposition. Weighing before and after showed a slight decrease in mass. Not as much as the students predicted until they did the next experiment