Lesson 3 - Grade 7 (18-22 May 2009)

1) Discussing the ancients - Hero of Byzanthium

2) How to classify a wheel

3) Duiscussion around simple machines and the Industrial Revolution

4) The wheel as an advanced form of lever

5) Watch the simple machines dvd pulleys, levers

6) How to classify levers trick.

Ask whats in the middle?
P - 1st class
L - 2nd class
E - 3rd class
a
s
e