#Physics is all about learning about electrostatics. Learning about like charges repel and unlike charges attract is such a keystone fundamental idea. #iteachphysics #Science #STEM
Thursday 25 November 2021
Wednesday 24 November 2021
Evolution Day
Its #EvolutionDay 162 years after the publication of The Origin of Species - A hard book to read. I like to show my students the fossils still in the rocks. #Science #STEM
Red Cabbage Indicator
Its that time of year to cut up the red cabbage and make red cabbage indicator. Fun but smelly.
Blend a leaf of red cabbage with 100 ml distilled water. Filter (cheese cloth recommended). The resulting solution displays pretty much a full range of colours from pH 1 to14. Some people recommend boiling the cabbage but it is not necessary
#Science #STEM
Tuesday 23 November 2021
Best Mixer
Mixing the same solution using different methods, by hand, using a magnetic stirrer and a vortex mixer. Which is best ? I find out #iteachphysics #iteachchemistry #Science #STEM
Monday 22 November 2021
Learning how to use a pipette
Learning how to use a pipette and get the meniscus at the correct level. This certainly takes some practice. #iteachchemistry #Science #STEM
Saturday 20 November 2021
Determining the Molecular weight of a volatile substance
Determining the Molecular weight of a volatile substance using the steam generator. Problem here is making the students wait until it is hot enough. A known amount of a volatile liquid is injected into the gas syringe at 100C. The volatile liquid evaporates and turns to gas and the volume is measured. #iteachchemistry #Science #STEM
Friday 19 November 2021
Conductors and insulators
#Physics Much of the usual fun with conductors and insulators. Both are at the same temp but the metal feels colder. Interesting answers of why. #iteachphysics #Science #STEM
online determination of acceleration due to gravity
This is an online lesson that shows acceleration due to gravity using the @pascoscientific light gate and a picket fence. It works very ac...
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Negative feedback is a difficult concept to try and get over so I tried using a balance board and the @pascoscientific smart cart strapped...
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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 ...
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Mechanics: the grand meeting of Maths & Physics! Using strobe light & a ball drop for gravity-acceleration calculations and SUVAT fo...