This week we worked with year 3 & 5 in the classroom exploring mixing and separating materials through colour.
First we thought about the impact that colour has on our lives. How food looks so unappetising when grey! How animals use colour for camouflage, enticement and warning.
After a short skill lesson in how to handle a pipette and create regular drops we used simple colour mixing to explore how from the three primary colours so many different colours can be made. Simple yes, but it is easy to forget that younger ones often don't actually know what happens if you mix colours. How lovely to hear an excited WOW! when blue and yellow made a stunning green.
Then we used ordinary felt pens to explore splitting up colours using paper chromatography
We then used Sharpie permanent markers and alcohol in dropper bottles to split and spread the colour. Some of the colours didn't split but all of them spread in a very pleasant pattern
Finally we made a home made lava lamp using colour and light for effect
Next week we will be sorting materials depending on conductivity