Make breakfast in front of the class! Fry an egg, burn toast, have some 'gone off' milk for them to smell, ice for your orange juice, butter which you 'accidently' allow to melt by being too near heat etc etc. You can also make tea and add sugar. Good demo, but your lab will smell of burnt toast all day!
Make breakfast in front of the class! Fry an egg, burn toast, have some 'gone off' milk for them to smell, ice for your orange juice, butter which you 'accidently' allow to melt by being too near heat etc etc. You can also make tea and add sugar. Good demo, but your lab will smell of burnt toast all day!
this works for KS2 and pleases the cross curricular police. Groups of 6 need 1 ice balloon, drawer tray, salt, food colouring, lots of post its. Appoint a scribe per group who writes down all descriptive words. Put balloon into drawer - saves lots of mopping up. Children observe ice balloon then begin to sprinkle with salt. After 10 mins or so add food colouring. When they've run out of words(?) they choose their favourites from list and write each one on a postit, sticking them to their table. Then organise them into favourite order adding any verbs etc (no more adjectives). Then into lines to form a poem. All groups recite at the same time. Rotate groups to read each others. To make an ice balloon fill a balloon with water and freeze. To use peel off the rubber.
Proving that hot air expands (relevance to convection) can be done by heating a balloon under a buinsen (a good distance) until it goes bang-great!