Tuesday's Science Lesson: reviewing scientific method and controlling independent variables.
Do the lesson at this link, then change one variable, height from which the ruler is dropped, changing to non-writing hand, holding catching hand upside, down, etc.
http://www.mythbusterstheexhibition.com/assets/documents/uploads/08-MBedudoc-Reflexes-03.pdf

First we will watch this video about variables:
https://www.youtube.com/watch?v=nzfDvfoBv_g