Ask the students what mould is, what happens when we leave food out for a long time?
Conduct the experiment.
Have the students record the results.
http://www.lessonplanspage.com/scienceexhowgrowmoldonbreadfastestmo68-htm/
Conduct the experiment.
Have the students record the results.
http://www.lessonplanspage.com/scienceexhowgrowmoldonbreadfastestmo68-htm/